/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:03:55,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:03:55,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:03:55,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 00:03:55,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:03:55,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:03:55,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:03:55,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:03:55,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:03:55,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:03:55,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:03:55,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:03:55,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:03:55,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:03:55,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:03:55,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:03:55,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 00:03:55,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 00:03:55,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 00:03:55,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 00:03:55,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-25 00:03:55,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:03:55,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:03:55,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:03:55,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:03:55,266 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:03:55,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:03:55,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:03:55,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:03:55,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:03:55,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:03:55,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:03:55,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:03:55,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:03:55,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:03:55,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:03:55,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:03:55,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:03:55,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:03:55,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:03:55,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:03:55,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:03:55,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:03:55,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:03:55,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:03:55,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:03:55,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:03:55,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:03:55,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:03:55,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:03:55,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:03:55,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:03:55,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:03:55,640 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:03:55,641 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:03:55,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-03-25 00:03:55,645 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-03-25 00:03:55,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:03:55,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:03:55,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:03:55,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:03:55,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:03:55,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:03:55,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:03:55,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:03:55,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:03:55,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... [2021-03-25 00:03:55,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:03:55,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:03:55,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:03:55,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:03:55,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:03:55,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:03:55,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:03:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:03:55,972 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:03:55,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:03:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:03:55,973 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:03:55,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:03:55,973 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 00:03:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 00:03:55,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 00:03:55,974 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 00:03:56,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:03:56,190 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:03:56,191 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:03:56 BoogieIcfgContainer [2021-03-25 00:03:56,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:03:56,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:03:56,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:03:56,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:03:56,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:55" (1/2) ... [2021-03-25 00:03:56,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea8685d and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:03:56, skipping insertion in model container [2021-03-25 00:03:56,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:03:56" (2/2) ... [2021-03-25 00:03:56,219 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-03-25 00:03:56,224 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:03:56,228 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:03:56,229 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:03:56,309 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 00:03:56,327 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 00:03:56,347 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:03:56,347 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:03:56,348 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:03:56,348 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:03:56,348 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:03:56,348 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:03:56,348 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:03:56,348 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:03:56,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 106 flow [2021-03-25 00:03:56,420 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-25 00:03:56,420 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:03:56,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:03:56,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 106 flow [2021-03-25 00:03:56,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 36 transitions, 90 flow [2021-03-25 00:03:56,428 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:03:56,458 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 36 transitions, 90 flow [2021-03-25 00:03:56,467 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 36 transitions, 90 flow [2021-03-25 00:03:56,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 36 transitions, 90 flow [2021-03-25 00:03:56,502 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-03-25 00:03:56,502 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:03:56,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 0/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:03:56,509 INFO L142 LiptonReduction]: Number of co-enabled transitions 412 [2021-03-25 00:03:56,956 INFO L154 LiptonReduction]: Checked pairs total: 992 [2021-03-25 00:03:56,956 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-25 00:03:56,959 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 532 [2021-03-25 00:03:56,987 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-25 00:03:56,987 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 00:03:56,987 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:56,988 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] [2021-03-25 00:03:56,988 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:56,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1305402496, now seen corresponding path program 1 times [2021-03-25 00:03:57,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:57,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053007599] [2021-03-25 00:03:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:57,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:57,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:57,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:57,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:57,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:57,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053007599] [2021-03-25 00:03:57,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:57,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:57,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391141785] [2021-03-25 00:03:57,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:57,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:57,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:57,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:57,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:57,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:57,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:57,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:57,365 INFO L129 PetriNetUnfolder]: 15/89 cut-off events. [2021-03-25 00:03:57,366 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 00:03:57,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 89 events. 15/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 344 event pairs, 1 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 130. Up to 23 conditions per place. [2021-03-25 00:03:57,369 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 12 selfloop transitions, 11 changer transitions 2/42 dead transitions. [2021-03-25 00:03:57,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 152 flow [2021-03-25 00:03:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:03:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:03:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 386 transitions. [2021-03-25 00:03:57,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8092243186582809 [2021-03-25 00:03:57,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 386 transitions. [2021-03-25 00:03:57,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 386 transitions. [2021-03-25 00:03:57,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:57,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 386 transitions. [2021-03-25 00:03:57,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 42.888888888888886) internal successors, (386), 9 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,393 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,395 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 66 flow. Second operand 9 states and 386 transitions. [2021-03-25 00:03:57,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 152 flow [2021-03-25 00:03:57,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 140 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 00:03:57,400 INFO L241 Difference]: Finished difference. Result has 40 places, 34 transitions, 119 flow [2021-03-25 00:03:57,401 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=119, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2021-03-25 00:03:57,402 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2021-03-25 00:03:57,402 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 119 flow [2021-03-25 00:03:57,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,403 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:57,403 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] [2021-03-25 00:03:57,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:03:57,403 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:57,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:57,404 INFO L82 PathProgramCache]: Analyzing trace with hash 620299272, now seen corresponding path program 2 times [2021-03-25 00:03:57,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:57,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140942810] [2021-03-25 00:03:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:57,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:57,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:57,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:03:57,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:57,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140942810] [2021-03-25 00:03:57,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:57,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:03:57,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965954620] [2021-03-25 00:03:57,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:57,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:57,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:57,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:57,472 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:03:57,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 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) [2021-03-25 00:03:57,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:57,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:03:57,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:57,634 INFO L129 PetriNetUnfolder]: 79/301 cut-off events. [2021-03-25 00:03:57,635 INFO L130 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2021-03-25 00:03:57,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 301 events. 79/301 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1862 event pairs, 8 based on Foata normal form. 2/286 useless extension candidates. Maximal degree in co-relation 572. Up to 48 conditions per place. [2021-03-25 00:03:57,648 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 19 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2021-03-25 00:03:57,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 245 flow [2021-03-25 00:03:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:03:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:03:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 343 transitions. [2021-03-25 00:03:57,653 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7190775681341719 [2021-03-25 00:03:57,653 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 343 transitions. [2021-03-25 00:03:57,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 343 transitions. [2021-03-25 00:03:57,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:57,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 343 transitions. [2021-03-25 00:03:57,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.111111111111114) internal successors, (343), 9 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,658 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,658 INFO L185 Difference]: Start difference. First operand has 40 places, 34 transitions, 119 flow. Second operand 9 states and 343 transitions. [2021-03-25 00:03:57,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 245 flow [2021-03-25 00:03:57,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 243 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 00:03:57,662 INFO L241 Difference]: Finished difference. Result has 51 places, 51 transitions, 233 flow [2021-03-25 00:03:57,662 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=233, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2021-03-25 00:03:57,663 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2021-03-25 00:03:57,663 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 233 flow [2021-03-25 00:03:57,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 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) [2021-03-25 00:03:57,664 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:57,664 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] [2021-03-25 00:03:57,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:03:57,664 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:57,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:57,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1311049238, now seen corresponding path program 3 times [2021-03-25 00:03:57,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:57,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613149669] [2021-03-25 00:03:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:57,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:57,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:57,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:57,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:57,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613149669] [2021-03-25 00:03:57,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:57,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:57,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415515516] [2021-03-25 00:03:57,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:57,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:57,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:57,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:57,796 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:57,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:57,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:57,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:57,917 INFO L129 PetriNetUnfolder]: 95/388 cut-off events. [2021-03-25 00:03:57,917 INFO L130 PetriNetUnfolder]: For 182/194 co-relation queries the response was YES. [2021-03-25 00:03:57,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 388 events. 95/388 cut-off events. For 182/194 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2661 event pairs, 5 based on Foata normal form. 10/389 useless extension candidates. Maximal degree in co-relation 907. Up to 78 conditions per place. [2021-03-25 00:03:57,920 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 21 selfloop transitions, 11 changer transitions 2/68 dead transitions. [2021-03-25 00:03:57,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 369 flow [2021-03-25 00:03:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:03:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:03:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 388 transitions. [2021-03-25 00:03:57,922 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8134171907756813 [2021-03-25 00:03:57,922 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 388 transitions. [2021-03-25 00:03:57,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 388 transitions. [2021-03-25 00:03:57,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:57,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 388 transitions. [2021-03-25 00:03:57,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.111111111111114) internal successors, (388), 9 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,925 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,925 INFO L185 Difference]: Start difference. First operand has 51 places, 51 transitions, 233 flow. Second operand 9 states and 388 transitions. [2021-03-25 00:03:57,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 369 flow [2021-03-25 00:03:57,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 369 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 00:03:57,929 INFO L241 Difference]: Finished difference. Result has 65 places, 57 transitions, 311 flow [2021-03-25 00:03:57,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2021-03-25 00:03:57,930 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2021-03-25 00:03:57,930 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 311 flow [2021-03-25 00:03:57,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,930 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:57,930 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:57,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:03:57,931 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:57,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1205368766, now seen corresponding path program 4 times [2021-03-25 00:03:57,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:57,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68039069] [2021-03-25 00:03:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:57,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:57,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:57,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:57,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:57,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68039069] [2021-03-25 00:03:57,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:57,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:57,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781880019] [2021-03-25 00:03:57,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:57,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:57,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:57,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:57,977 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:57,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:57,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:57,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:57,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:58,101 INFO L129 PetriNetUnfolder]: 100/417 cut-off events. [2021-03-25 00:03:58,102 INFO L130 PetriNetUnfolder]: For 471/497 co-relation queries the response was YES. [2021-03-25 00:03:58,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 417 events. 100/417 cut-off events. For 471/497 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2971 event pairs, 5 based on Foata normal form. 18/425 useless extension candidates. Maximal degree in co-relation 1235. Up to 136 conditions per place. [2021-03-25 00:03:58,108 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 17 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2021-03-25 00:03:58,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 439 flow [2021-03-25 00:03:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:03:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:03:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 344 transitions. [2021-03-25 00:03:58,114 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-25 00:03:58,114 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 344 transitions. [2021-03-25 00:03:58,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 344 transitions. [2021-03-25 00:03:58,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:58,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 344 transitions. [2021-03-25 00:03:58,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 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) [2021-03-25 00:03:58,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,117 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,117 INFO L185 Difference]: Start difference. First operand has 65 places, 57 transitions, 311 flow. Second operand 8 states and 344 transitions. [2021-03-25 00:03:58,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 439 flow [2021-03-25 00:03:58,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 410 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-25 00:03:58,125 INFO L241 Difference]: Finished difference. Result has 69 places, 64 transitions, 386 flow [2021-03-25 00:03:58,126 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=386, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2021-03-25 00:03:58,126 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 35 predicate places. [2021-03-25 00:03:58,126 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 386 flow [2021-03-25 00:03:58,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:58,126 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] [2021-03-25 00:03:58,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:03:58,127 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:58,127 INFO L82 PathProgramCache]: Analyzing trace with hash -89970466, now seen corresponding path program 5 times [2021-03-25 00:03:58,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:58,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820030753] [2021-03-25 00:03:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:58,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:58,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820030753] [2021-03-25 00:03:58,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:58,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:58,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932115082] [2021-03-25 00:03:58,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:58,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:58,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:58,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:58,211 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:58,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:58,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:58,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:58,338 INFO L129 PetriNetUnfolder]: 97/442 cut-off events. [2021-03-25 00:03:58,339 INFO L130 PetriNetUnfolder]: For 541/569 co-relation queries the response was YES. [2021-03-25 00:03:58,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 442 events. 97/442 cut-off events. For 541/569 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3274 event pairs, 5 based on Foata normal form. 20/452 useless extension candidates. Maximal degree in co-relation 1294. Up to 122 conditions per place. [2021-03-25 00:03:58,344 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 18 selfloop transitions, 17 changer transitions 0/69 dead transitions. [2021-03-25 00:03:58,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 492 flow [2021-03-25 00:03:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:03:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:03:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 385 transitions. [2021-03-25 00:03:58,345 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8071278825995807 [2021-03-25 00:03:58,345 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 385 transitions. [2021-03-25 00:03:58,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 385 transitions. [2021-03-25 00:03:58,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:58,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 385 transitions. [2021-03-25 00:03:58,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 42.77777777777778) internal successors, (385), 9 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,348 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,348 INFO L185 Difference]: Start difference. First operand has 69 places, 64 transitions, 386 flow. Second operand 9 states and 385 transitions. [2021-03-25 00:03:58,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 492 flow [2021-03-25 00:03:58,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 461 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-25 00:03:58,357 INFO L241 Difference]: Finished difference. Result has 76 places, 66 transitions, 414 flow [2021-03-25 00:03:58,357 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=414, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2021-03-25 00:03:58,357 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2021-03-25 00:03:58,357 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 414 flow [2021-03-25 00:03:58,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,357 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:58,358 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] [2021-03-25 00:03:58,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:03:58,358 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:58,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:58,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2109477200, now seen corresponding path program 6 times [2021-03-25 00:03:58,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:58,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613416455] [2021-03-25 00:03:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:58,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:58,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613416455] [2021-03-25 00:03:58,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:58,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:58,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470595497] [2021-03-25 00:03:58,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:58,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:58,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:58,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:58,432 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:58,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 414 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:58,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:58,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:58,569 INFO L129 PetriNetUnfolder]: 96/460 cut-off events. [2021-03-25 00:03:58,569 INFO L130 PetriNetUnfolder]: For 638/676 co-relation queries the response was YES. [2021-03-25 00:03:58,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 460 events. 96/460 cut-off events. For 638/676 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3513 event pairs, 2 based on Foata normal form. 22/472 useless extension candidates. Maximal degree in co-relation 1429. Up to 137 conditions per place. [2021-03-25 00:03:58,573 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 17 selfloop transitions, 11 changer transitions 7/69 dead transitions. [2021-03-25 00:03:58,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 69 transitions, 515 flow [2021-03-25 00:03:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:03:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:03:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 425 transitions. [2021-03-25 00:03:58,575 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8018867924528302 [2021-03-25 00:03:58,576 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 425 transitions. [2021-03-25 00:03:58,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 425 transitions. [2021-03-25 00:03:58,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:58,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 425 transitions. [2021-03-25 00:03:58,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.5) internal successors, (425), 10 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,582 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,583 INFO L185 Difference]: Start difference. First operand has 76 places, 66 transitions, 414 flow. Second operand 10 states and 425 transitions. [2021-03-25 00:03:58,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 69 transitions, 515 flow [2021-03-25 00:03:58,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 69 transitions, 456 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-25 00:03:58,591 INFO L241 Difference]: Finished difference. Result has 81 places, 60 transitions, 354 flow [2021-03-25 00:03:58,591 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2021-03-25 00:03:58,592 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2021-03-25 00:03:58,592 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 354 flow [2021-03-25 00:03:58,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,592 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:58,592 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] [2021-03-25 00:03:58,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:03:58,593 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash -719579058, now seen corresponding path program 7 times [2021-03-25 00:03:58,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:58,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014137250] [2021-03-25 00:03:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:58,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:58,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:58,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014137250] [2021-03-25 00:03:58,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:58,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:58,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918034019] [2021-03-25 00:03:58,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:58,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:58,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:58,685 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:58,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:58,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:58,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:58,845 INFO L129 PetriNetUnfolder]: 97/552 cut-off events. [2021-03-25 00:03:58,845 INFO L130 PetriNetUnfolder]: For 825/864 co-relation queries the response was YES. [2021-03-25 00:03:58,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 552 events. 97/552 cut-off events. For 825/864 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4590 event pairs, 6 based on Foata normal form. 26/565 useless extension candidates. Maximal degree in co-relation 1726. Up to 96 conditions per place. [2021-03-25 00:03:58,850 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 28 selfloop transitions, 20 changer transitions 2/84 dead transitions. [2021-03-25 00:03:58,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 631 flow [2021-03-25 00:03:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:03:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:03:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 388 transitions. [2021-03-25 00:03:58,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8134171907756813 [2021-03-25 00:03:58,852 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 388 transitions. [2021-03-25 00:03:58,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 388 transitions. [2021-03-25 00:03:58,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:58,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 388 transitions. [2021-03-25 00:03:58,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.111111111111114) internal successors, (388), 9 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,854 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,855 INFO L185 Difference]: Start difference. First operand has 81 places, 60 transitions, 354 flow. Second operand 9 states and 388 transitions. [2021-03-25 00:03:58,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 631 flow [2021-03-25 00:03:58,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 573 flow, removed 10 selfloop flow, removed 9 redundant places. [2021-03-25 00:03:58,862 INFO L241 Difference]: Finished difference. Result has 78 places, 71 transitions, 487 flow [2021-03-25 00:03:58,862 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=487, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2021-03-25 00:03:58,862 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2021-03-25 00:03:58,863 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 487 flow [2021-03-25 00:03:58,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,863 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:58,863 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] [2021-03-25 00:03:58,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 00:03:58,863 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash -2066940378, now seen corresponding path program 8 times [2021-03-25 00:03:58,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:58,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507158156] [2021-03-25 00:03:58,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:58,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:58,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:58,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:58,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:58,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:58,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507158156] [2021-03-25 00:03:58,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:58,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:58,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406762150] [2021-03-25 00:03:58,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:58,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:58,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:58,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:58,906 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:58,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 487 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:58,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:58,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:58,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:59,036 INFO L129 PetriNetUnfolder]: 97/540 cut-off events. [2021-03-25 00:03:59,036 INFO L130 PetriNetUnfolder]: For 1120/1168 co-relation queries the response was YES. [2021-03-25 00:03:59,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 540 events. 97/540 cut-off events. For 1120/1168 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4412 event pairs, 14 based on Foata normal form. 32/557 useless extension candidates. Maximal degree in co-relation 1716. Up to 121 conditions per place. [2021-03-25 00:03:59,040 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 21 selfloop transitions, 22 changer transitions 2/79 dead transitions. [2021-03-25 00:03:59,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 632 flow [2021-03-25 00:03:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:03:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:03:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 385 transitions. [2021-03-25 00:03:59,042 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8071278825995807 [2021-03-25 00:03:59,042 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 385 transitions. [2021-03-25 00:03:59,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 385 transitions. [2021-03-25 00:03:59,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:59,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 385 transitions. [2021-03-25 00:03:59,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 42.77777777777778) internal successors, (385), 9 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,045 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,045 INFO L185 Difference]: Start difference. First operand has 78 places, 71 transitions, 487 flow. Second operand 9 states and 385 transitions. [2021-03-25 00:03:59,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 632 flow [2021-03-25 00:03:59,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 599 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-25 00:03:59,055 INFO L241 Difference]: Finished difference. Result has 83 places, 74 transitions, 542 flow [2021-03-25 00:03:59,055 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=542, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2021-03-25 00:03:59,056 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2021-03-25 00:03:59,056 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 542 flow [2021-03-25 00:03:59,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,056 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:59,056 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] [2021-03-25 00:03:59,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 00:03:59,056 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:59,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1742139382, now seen corresponding path program 9 times [2021-03-25 00:03:59,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:59,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663999875] [2021-03-25 00:03:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:59,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:59,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:59,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:59,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:59,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663999875] [2021-03-25 00:03:59,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:59,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:59,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041743732] [2021-03-25 00:03:59,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:59,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:59,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:59,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:59,103 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:59,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:59,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:59,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:59,251 INFO L129 PetriNetUnfolder]: 89/540 cut-off events. [2021-03-25 00:03:59,251 INFO L130 PetriNetUnfolder]: For 1155/1201 co-relation queries the response was YES. [2021-03-25 00:03:59,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 540 events. 89/540 cut-off events. For 1155/1201 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4495 event pairs, 6 based on Foata normal form. 31/557 useless extension candidates. Maximal degree in co-relation 1729. Up to 157 conditions per place. [2021-03-25 00:03:59,256 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 27 selfloop transitions, 20 changer transitions 0/81 dead transitions. [2021-03-25 00:03:59,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 691 flow [2021-03-25 00:03:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 00:03:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 00:03:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2021-03-25 00:03:59,258 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8037735849056604 [2021-03-25 00:03:59,258 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 426 transitions. [2021-03-25 00:03:59,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 426 transitions. [2021-03-25 00:03:59,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:59,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 426 transitions. [2021-03-25 00:03:59,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.6) internal successors, (426), 10 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,261 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,261 INFO L185 Difference]: Start difference. First operand has 83 places, 74 transitions, 542 flow. Second operand 10 states and 426 transitions. [2021-03-25 00:03:59,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 81 transitions, 691 flow [2021-03-25 00:03:59,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 81 transitions, 607 flow, removed 16 selfloop flow, removed 9 redundant places. [2021-03-25 00:03:59,274 INFO L241 Difference]: Finished difference. Result has 83 places, 79 transitions, 560 flow [2021-03-25 00:03:59,274 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2021-03-25 00:03:59,274 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2021-03-25 00:03:59,275 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 560 flow [2021-03-25 00:03:59,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,275 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:59,275 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] [2021-03-25 00:03:59,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 00:03:59,275 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:59,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2129782140, now seen corresponding path program 10 times [2021-03-25 00:03:59,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:59,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129611837] [2021-03-25 00:03:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:59,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:59,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:59,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:59,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:59,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129611837] [2021-03-25 00:03:59,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:59,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:59,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269106631] [2021-03-25 00:03:59,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:59,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:59,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:59,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:59,327 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:59,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 560 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:59,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:59,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:59,474 INFO L129 PetriNetUnfolder]: 89/538 cut-off events. [2021-03-25 00:03:59,475 INFO L130 PetriNetUnfolder]: For 800/854 co-relation queries the response was YES. [2021-03-25 00:03:59,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 538 events. 89/538 cut-off events. For 800/854 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4500 event pairs, 6 based on Foata normal form. 37/561 useless extension candidates. Maximal degree in co-relation 1603. Up to 145 conditions per place. [2021-03-25 00:03:59,478 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 25 selfloop transitions, 22 changer transitions 0/81 dead transitions. [2021-03-25 00:03:59,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 81 transitions, 663 flow [2021-03-25 00:03:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:03:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:03:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 385 transitions. [2021-03-25 00:03:59,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8071278825995807 [2021-03-25 00:03:59,480 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 385 transitions. [2021-03-25 00:03:59,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 385 transitions. [2021-03-25 00:03:59,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:59,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 385 transitions. [2021-03-25 00:03:59,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 42.77777777777778) internal successors, (385), 9 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,482 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,482 INFO L185 Difference]: Start difference. First operand has 83 places, 79 transitions, 560 flow. Second operand 9 states and 385 transitions. [2021-03-25 00:03:59,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 81 transitions, 663 flow [2021-03-25 00:03:59,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 81 transitions, 607 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-25 00:03:59,490 INFO L241 Difference]: Finished difference. Result has 87 places, 79 transitions, 551 flow [2021-03-25 00:03:59,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=551, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2021-03-25 00:03:59,491 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 53 predicate places. [2021-03-25 00:03:59,491 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 551 flow [2021-03-25 00:03:59,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:59,491 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] [2021-03-25 00:03:59,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 00:03:59,492 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:59,492 INFO L82 PathProgramCache]: Analyzing trace with hash -274780494, now seen corresponding path program 11 times [2021-03-25 00:03:59,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:59,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463781506] [2021-03-25 00:03:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:59,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:59,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:03:59,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:59,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:03:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:59,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463781506] [2021-03-25 00:03:59,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:59,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:03:59,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146428524] [2021-03-25 00:03:59,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:03:59,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:59,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:03:59,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:03:59,534 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 53 [2021-03-25 00:03:59,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 551 flow. Second operand has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:59,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 53 [2021-03-25 00:03:59,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:59,668 INFO L129 PetriNetUnfolder]: 89/536 cut-off events. [2021-03-25 00:03:59,669 INFO L130 PetriNetUnfolder]: For 596/632 co-relation queries the response was YES. [2021-03-25 00:03:59,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 536 events. 89/536 cut-off events. For 596/632 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4468 event pairs, 6 based on Foata normal form. 27/549 useless extension candidates. Maximal degree in co-relation 1609. Up to 163 conditions per place. [2021-03-25 00:03:59,673 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 24 selfloop transitions, 13 changer transitions 13/80 dead transitions. [2021-03-25 00:03:59,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 80 transitions, 648 flow [2021-03-25 00:03:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:03:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:03:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 344 transitions. [2021-03-25 00:03:59,674 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-25 00:03:59,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 344 transitions. [2021-03-25 00:03:59,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 344 transitions. [2021-03-25 00:03:59,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:59,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 344 transitions. [2021-03-25 00:03:59,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 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) [2021-03-25 00:03:59,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,677 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,677 INFO L185 Difference]: Start difference. First operand has 87 places, 79 transitions, 551 flow. Second operand 8 states and 344 transitions. [2021-03-25 00:03:59,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 80 transitions, 648 flow [2021-03-25 00:03:59,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 535 flow, removed 11 selfloop flow, removed 12 redundant places. [2021-03-25 00:03:59,685 INFO L241 Difference]: Finished difference. Result has 83 places, 66 transitions, 400 flow [2021-03-25 00:03:59,685 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=400, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2021-03-25 00:03:59,686 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2021-03-25 00:03:59,686 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 400 flow [2021-03-25 00:03:59,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,686 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:59,687 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] [2021-03-25 00:03:59,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 00:03:59,687 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:59,687 INFO L82 PathProgramCache]: Analyzing trace with hash -2071257668, now seen corresponding path program 12 times [2021-03-25 00:03:59,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:59,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020933368] [2021-03-25 00:03:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:59,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:59,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:59,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:59,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020933368] [2021-03-25 00:03:59,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:59,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:03:59,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191722467] [2021-03-25 00:03:59,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:03:59,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:59,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:03:59,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:03:59,712 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 53 [2021-03-25 00:03:59,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:59,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 53 [2021-03-25 00:03:59,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:59,741 INFO L129 PetriNetUnfolder]: 34/339 cut-off events. [2021-03-25 00:03:59,741 INFO L130 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2021-03-25 00:03:59,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 339 events. 34/339 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2599 event pairs, 0 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 776. Up to 55 conditions per place. [2021-03-25 00:03:59,743 INFO L132 encePairwiseOnDemand]: 50/53 looper letters, 2 selfloop transitions, 4 changer transitions 2/65 dead transitions. [2021-03-25 00:03:59,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 406 flow [2021-03-25 00:03:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:03:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:03:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2021-03-25 00:03:59,744 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8616352201257862 [2021-03-25 00:03:59,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 137 transitions. [2021-03-25 00:03:59,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 137 transitions. [2021-03-25 00:03:59,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:59,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 137 transitions. [2021-03-25 00:03:59,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,745 INFO L185 Difference]: Start difference. First operand has 83 places, 66 transitions, 400 flow. Second operand 3 states and 137 transitions. [2021-03-25 00:03:59,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 406 flow [2021-03-25 00:03:59,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 357 flow, removed 4 selfloop flow, removed 11 redundant places. [2021-03-25 00:03:59,749 INFO L241 Difference]: Finished difference. Result has 65 places, 63 transitions, 347 flow [2021-03-25 00:03:59,749 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2021-03-25 00:03:59,749 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2021-03-25 00:03:59,749 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 347 flow [2021-03-25 00:03:59,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:59,749 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] [2021-03-25 00:03:59,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 00:03:59,750 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash -725149420, now seen corresponding path program 13 times [2021-03-25 00:03:59,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:59,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560418556] [2021-03-25 00:03:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:59,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:59,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:59,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:59,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:59,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:59,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:59,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:03:59,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:59,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:59,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560418556] [2021-03-25 00:03:59,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:59,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:03:59,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536077186] [2021-03-25 00:03:59,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:03:59,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:59,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:03:59,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:03:59,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:03:59,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 347 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:59,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:59,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:03:59,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:00,021 INFO L129 PetriNetUnfolder]: 111/696 cut-off events. [2021-03-25 00:04:00,021 INFO L130 PetriNetUnfolder]: For 592/673 co-relation queries the response was YES. [2021-03-25 00:04:00,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1916 conditions, 696 events. 111/696 cut-off events. For 592/673 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6172 event pairs, 2 based on Foata normal form. 18/698 useless extension candidates. Maximal degree in co-relation 1744. Up to 111 conditions per place. [2021-03-25 00:04:00,025 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 21 selfloop transitions, 18 changer transitions 7/90 dead transitions. [2021-03-25 00:04:00,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 579 flow [2021-03-25 00:04:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 341 transitions. [2021-03-25 00:04:00,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7148846960167715 [2021-03-25 00:04:00,027 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 341 transitions. [2021-03-25 00:04:00,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 341 transitions. [2021-03-25 00:04:00,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:00,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 341 transitions. [2021-03-25 00:04:00,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.888888888888886) internal successors, (341), 9 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,031 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,031 INFO L185 Difference]: Start difference. First operand has 65 places, 63 transitions, 347 flow. Second operand 9 states and 341 transitions. [2021-03-25 00:04:00,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 579 flow [2021-03-25 00:04:00,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 90 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:04:00,035 INFO L241 Difference]: Finished difference. Result has 76 places, 73 transitions, 468 flow [2021-03-25 00:04:00,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2021-03-25 00:04:00,036 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2021-03-25 00:04:00,036 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 468 flow [2021-03-25 00:04:00,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,036 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:00,036 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] [2021-03-25 00:04:00,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 00:04:00,036 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1153308160, now seen corresponding path program 14 times [2021-03-25 00:04:00,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:00,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931668116] [2021-03-25 00:04:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:00,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:00,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931668116] [2021-03-25 00:04:00,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:00,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:00,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905485642] [2021-03-25 00:04:00,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:00,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:00,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:00,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:00,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:04:00,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 468 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:00,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:04:00,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:00,310 INFO L129 PetriNetUnfolder]: 136/750 cut-off events. [2021-03-25 00:04:00,310 INFO L130 PetriNetUnfolder]: For 1434/1564 co-relation queries the response was YES. [2021-03-25 00:04:00,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2460 conditions, 750 events. 136/750 cut-off events. For 1434/1564 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6667 event pairs, 13 based on Foata normal form. 32/760 useless extension candidates. Maximal degree in co-relation 2280. Up to 123 conditions per place. [2021-03-25 00:04:00,315 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 24 selfloop transitions, 17 changer transitions 3/88 dead transitions. [2021-03-25 00:04:00,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 663 flow [2021-03-25 00:04:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:00,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 339 transitions. [2021-03-25 00:04:00,318 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2021-03-25 00:04:00,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 339 transitions. [2021-03-25 00:04:00,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 339 transitions. [2021-03-25 00:04:00,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:00,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 339 transitions. [2021-03-25 00:04:00,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.666666666666664) internal successors, (339), 9 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,320 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,320 INFO L185 Difference]: Start difference. First operand has 76 places, 73 transitions, 468 flow. Second operand 9 states and 339 transitions. [2021-03-25 00:04:00,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 663 flow [2021-03-25 00:04:00,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 653 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 00:04:00,326 INFO L241 Difference]: Finished difference. Result has 84 places, 79 transitions, 557 flow [2021-03-25 00:04:00,327 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=557, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2021-03-25 00:04:00,327 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2021-03-25 00:04:00,327 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 557 flow [2021-03-25 00:04:00,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,327 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:00,327 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] [2021-03-25 00:04:00,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 00:04:00,328 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1829898402, now seen corresponding path program 15 times [2021-03-25 00:04:00,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:00,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536872238] [2021-03-25 00:04:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:00,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,396 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-25 00:04:00,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:00,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536872238] [2021-03-25 00:04:00,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:00,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:00,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006095459] [2021-03-25 00:04:00,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:00,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:00,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:00,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:00,408 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:04:00,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 557 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:00,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:04:00,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:00,584 INFO L129 PetriNetUnfolder]: 107/678 cut-off events. [2021-03-25 00:04:00,585 INFO L130 PetriNetUnfolder]: For 1642/1758 co-relation queries the response was YES. [2021-03-25 00:04:00,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 678 events. 107/678 cut-off events. For 1642/1758 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6038 event pairs, 15 based on Foata normal form. 31/682 useless extension candidates. Maximal degree in co-relation 2090. Up to 108 conditions per place. [2021-03-25 00:04:00,590 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 23 selfloop transitions, 12 changer transitions 4/83 dead transitions. [2021-03-25 00:04:00,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 653 flow [2021-03-25 00:04:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 337 transitions. [2021-03-25 00:04:00,593 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7064989517819706 [2021-03-25 00:04:00,593 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 337 transitions. [2021-03-25 00:04:00,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 337 transitions. [2021-03-25 00:04:00,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:00,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 337 transitions. [2021-03-25 00:04:00,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.44444444444444) internal successors, (337), 9 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,598 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,599 INFO L185 Difference]: Start difference. First operand has 84 places, 79 transitions, 557 flow. Second operand 9 states and 337 transitions. [2021-03-25 00:04:00,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 653 flow [2021-03-25 00:04:00,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 621 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-25 00:04:00,606 INFO L241 Difference]: Finished difference. Result has 90 places, 74 transitions, 506 flow [2021-03-25 00:04:00,607 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=506, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2021-03-25 00:04:00,607 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 56 predicate places. [2021-03-25 00:04:00,607 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 506 flow [2021-03-25 00:04:00,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,607 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:00,607 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] [2021-03-25 00:04:00,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 00:04:00,608 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash -397712146, now seen corresponding path program 16 times [2021-03-25 00:04:00,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:00,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851878222] [2021-03-25 00:04:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:00,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:00,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851878222] [2021-03-25 00:04:00,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:00,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:04:00,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275777890] [2021-03-25 00:04:00,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:04:00,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:00,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:04:00,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:04:00,640 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 53 [2021-03-25 00:04:00,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:00,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 53 [2021-03-25 00:04:00,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:00,690 INFO L129 PetriNetUnfolder]: 66/536 cut-off events. [2021-03-25 00:04:00,690 INFO L130 PetriNetUnfolder]: For 646/649 co-relation queries the response was YES. [2021-03-25 00:04:00,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 536 events. 66/536 cut-off events. For 646/649 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4662 event pairs, 1 based on Foata normal form. 6/524 useless extension candidates. Maximal degree in co-relation 1230. Up to 88 conditions per place. [2021-03-25 00:04:00,693 INFO L132 encePairwiseOnDemand]: 50/53 looper letters, 2 selfloop transitions, 7 changer transitions 1/74 dead transitions. [2021-03-25 00:04:00,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 74 transitions, 524 flow [2021-03-25 00:04:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:04:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:04:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2021-03-25 00:04:00,694 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8805031446540881 [2021-03-25 00:04:00,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2021-03-25 00:04:00,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2021-03-25 00:04:00,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:00,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2021-03-25 00:04:00,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,697 INFO L185 Difference]: Start difference. First operand has 90 places, 74 transitions, 506 flow. Second operand 3 states and 140 transitions. [2021-03-25 00:04:00,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 74 transitions, 524 flow [2021-03-25 00:04:00,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 74 transitions, 496 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-03-25 00:04:00,702 INFO L241 Difference]: Finished difference. Result has 81 places, 73 transitions, 490 flow [2021-03-25 00:04:00,702 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2021-03-25 00:04:00,702 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2021-03-25 00:04:00,702 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 490 flow [2021-03-25 00:04:00,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,703 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:00,703 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] [2021-03-25 00:04:00,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 00:04:00,703 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1412103484, now seen corresponding path program 17 times [2021-03-25 00:04:00,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:00,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529906002] [2021-03-25 00:04:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:00,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,760 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 00:04:00,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:00,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:00,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529906002] [2021-03-25 00:04:00,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:00,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:00,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012935584] [2021-03-25 00:04:00,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:00,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:00,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:04:00,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 490 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:00,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:04:00,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:00,934 INFO L129 PetriNetUnfolder]: 80/589 cut-off events. [2021-03-25 00:04:00,934 INFO L130 PetriNetUnfolder]: For 1034/1119 co-relation queries the response was YES. [2021-03-25 00:04:00,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 589 events. 80/589 cut-off events. For 1034/1119 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5117 event pairs, 12 based on Foata normal form. 31/609 useless extension candidates. Maximal degree in co-relation 1563. Up to 91 conditions per place. [2021-03-25 00:04:00,938 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 19 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2021-03-25 00:04:00,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 589 flow [2021-03-25 00:04:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 334 transitions. [2021-03-25 00:04:00,939 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.70020964360587 [2021-03-25 00:04:00,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 334 transitions. [2021-03-25 00:04:00,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 334 transitions. [2021-03-25 00:04:00,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:00,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 334 transitions. [2021-03-25 00:04:00,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,941 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,941 INFO L185 Difference]: Start difference. First operand has 81 places, 73 transitions, 490 flow. Second operand 9 states and 334 transitions. [2021-03-25 00:04:00,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 589 flow [2021-03-25 00:04:00,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 78 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:04:00,947 INFO L241 Difference]: Finished difference. Result has 89 places, 76 transitions, 540 flow [2021-03-25 00:04:00,947 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=540, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2021-03-25 00:04:00,947 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 55 predicate places. [2021-03-25 00:04:00,947 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 540 flow [2021-03-25 00:04:00,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:00,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:00,947 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] [2021-03-25 00:04:00,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 00:04:00,948 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash 488995628, now seen corresponding path program 18 times [2021-03-25 00:04:00,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:00,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225220676] [2021-03-25 00:04:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:00,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:00,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:00,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:00,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:01,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:01,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225220676] [2021-03-25 00:04:01,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:01,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:01,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126334248] [2021-03-25 00:04:01,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:01,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:01,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:01,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:01,010 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:04:01,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:01,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:04:01,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:01,155 INFO L129 PetriNetUnfolder]: 68/449 cut-off events. [2021-03-25 00:04:01,155 INFO L130 PetriNetUnfolder]: For 822/880 co-relation queries the response was YES. [2021-03-25 00:04:01,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 449 events. 68/449 cut-off events. For 822/880 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3442 event pairs, 12 based on Foata normal form. 15/451 useless extension candidates. Maximal degree in co-relation 1272. Up to 84 conditions per place. [2021-03-25 00:04:01,158 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 17 selfloop transitions, 7 changer transitions 6/74 dead transitions. [2021-03-25 00:04:01,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 74 transitions, 572 flow [2021-03-25 00:04:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 330 transitions. [2021-03-25 00:04:01,159 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2021-03-25 00:04:01,159 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 330 transitions. [2021-03-25 00:04:01,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 330 transitions. [2021-03-25 00:04:01,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:01,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 330 transitions. [2021-03-25 00:04:01,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,161 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,161 INFO L185 Difference]: Start difference. First operand has 89 places, 76 transitions, 540 flow. Second operand 9 states and 330 transitions. [2021-03-25 00:04:01,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 74 transitions, 572 flow [2021-03-25 00:04:01,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 74 transitions, 542 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-25 00:04:01,167 INFO L241 Difference]: Finished difference. Result has 90 places, 66 transitions, 426 flow [2021-03-25 00:04:01,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=426, PETRI_PLACES=90, PETRI_TRANSITIONS=66} [2021-03-25 00:04:01,167 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 56 predicate places. [2021-03-25 00:04:01,167 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 66 transitions, 426 flow [2021-03-25 00:04:01,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,168 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:01,168 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] [2021-03-25 00:04:01,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 00:04:01,168 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:01,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:01,168 INFO L82 PathProgramCache]: Analyzing trace with hash 779278972, now seen corresponding path program 19 times [2021-03-25 00:04:01,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:01,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484278149] [2021-03-25 00:04:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:01,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:01,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:01,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484278149] [2021-03-25 00:04:01,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:01,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:01,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539360942] [2021-03-25 00:04:01,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:01,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:01,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:01,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:01,235 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:04:01,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 66 transitions, 426 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:01,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:04:01,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:01,388 INFO L129 PetriNetUnfolder]: 67/420 cut-off events. [2021-03-25 00:04:01,388 INFO L130 PetriNetUnfolder]: For 688/756 co-relation queries the response was YES. [2021-03-25 00:04:01,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 420 events. 67/420 cut-off events. For 688/756 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3225 event pairs, 9 based on Foata normal form. 19/428 useless extension candidates. Maximal degree in co-relation 1243. Up to 120 conditions per place. [2021-03-25 00:04:01,391 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 14 selfloop transitions, 12 changer transitions 4/72 dead transitions. [2021-03-25 00:04:01,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 72 transitions, 519 flow [2021-03-25 00:04:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:04:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:04:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2021-03-25 00:04:01,393 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6957547169811321 [2021-03-25 00:04:01,393 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 295 transitions. [2021-03-25 00:04:01,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 295 transitions. [2021-03-25 00:04:01,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:01,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 295 transitions. [2021-03-25 00:04:01,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,394 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,394 INFO L185 Difference]: Start difference. First operand has 90 places, 66 transitions, 426 flow. Second operand 8 states and 295 transitions. [2021-03-25 00:04:01,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 72 transitions, 519 flow [2021-03-25 00:04:01,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 464 flow, removed 5 selfloop flow, removed 11 redundant places. [2021-03-25 00:04:01,399 INFO L241 Difference]: Finished difference. Result has 79 places, 66 transitions, 413 flow [2021-03-25 00:04:01,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=413, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2021-03-25 00:04:01,399 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2021-03-25 00:04:01,399 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 413 flow [2021-03-25 00:04:01,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,399 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:01,399 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] [2021-03-25 00:04:01,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 00:04:01,400 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:01,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:01,400 INFO L82 PathProgramCache]: Analyzing trace with hash 378318006, now seen corresponding path program 20 times [2021-03-25 00:04:01,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:01,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376120281] [2021-03-25 00:04:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:01,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,450 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-25 00:04:01,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:01,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376120281] [2021-03-25 00:04:01,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:01,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:01,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686553728] [2021-03-25 00:04:01,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:01,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:01,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:01,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:01,468 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:04:01,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 413 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:01,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:04:01,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:01,598 INFO L129 PetriNetUnfolder]: 36/332 cut-off events. [2021-03-25 00:04:01,598 INFO L130 PetriNetUnfolder]: For 628/690 co-relation queries the response was YES. [2021-03-25 00:04:01,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 332 events. 36/332 cut-off events. For 628/690 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2504 event pairs, 1 based on Foata normal form. 13/343 useless extension candidates. Maximal degree in co-relation 959. Up to 80 conditions per place. [2021-03-25 00:04:01,600 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 12 selfloop transitions, 10 changer transitions 6/70 dead transitions. [2021-03-25 00:04:01,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 70 transitions, 490 flow [2021-03-25 00:04:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:04:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:04:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2021-03-25 00:04:01,602 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6863207547169812 [2021-03-25 00:04:01,602 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 291 transitions. [2021-03-25 00:04:01,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 291 transitions. [2021-03-25 00:04:01,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:01,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 291 transitions. [2021-03-25 00:04:01,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,603 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,603 INFO L185 Difference]: Start difference. First operand has 79 places, 66 transitions, 413 flow. Second operand 8 states and 291 transitions. [2021-03-25 00:04:01,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 70 transitions, 490 flow [2021-03-25 00:04:01,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 70 transitions, 472 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-25 00:04:01,607 INFO L241 Difference]: Finished difference. Result has 82 places, 61 transitions, 376 flow [2021-03-25 00:04:01,607 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=376, PETRI_PLACES=82, PETRI_TRANSITIONS=61} [2021-03-25 00:04:01,608 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 48 predicate places. [2021-03-25 00:04:01,608 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 61 transitions, 376 flow [2021-03-25 00:04:01,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,608 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:01,608 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] [2021-03-25 00:04:01,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 00:04:01,608 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:01,608 INFO L82 PathProgramCache]: Analyzing trace with hash 2118119642, now seen corresponding path program 21 times [2021-03-25 00:04:01,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:01,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449296036] [2021-03-25 00:04:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:01,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:01,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:01,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 00:04:01,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:01,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:01,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449296036] [2021-03-25 00:04:01,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:01,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:04:01,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702313929] [2021-03-25 00:04:01,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:04:01,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:01,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:04:01,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:04:01,651 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:04:01,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 61 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 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) [2021-03-25 00:04:01,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:01,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:04:01,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:01,735 INFO L129 PetriNetUnfolder]: 15/179 cut-off events. [2021-03-25 00:04:01,735 INFO L130 PetriNetUnfolder]: For 547/589 co-relation queries the response was YES. [2021-03-25 00:04:01,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 179 events. 15/179 cut-off events. For 547/589 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1081 event pairs, 1 based on Foata normal form. 17/196 useless extension candidates. Maximal degree in co-relation 588. Up to 42 conditions per place. [2021-03-25 00:04:01,736 INFO L132 encePairwiseOnDemand]: 45/53 looper letters, 4 selfloop transitions, 7 changer transitions 12/65 dead transitions. [2021-03-25 00:04:01,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 65 transitions, 448 flow [2021-03-25 00:04:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 00:04:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 00:04:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 327 transitions. [2021-03-25 00:04:01,737 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6855345911949685 [2021-03-25 00:04:01,737 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 327 transitions. [2021-03-25 00:04:01,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 327 transitions. [2021-03-25 00:04:01,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:01,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 327 transitions. [2021-03-25 00:04:01,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.333333333333336) internal successors, (327), 9 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,740 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,740 INFO L185 Difference]: Start difference. First operand has 82 places, 61 transitions, 376 flow. Second operand 9 states and 327 transitions. [2021-03-25 00:04:01,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 65 transitions, 448 flow [2021-03-25 00:04:01,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 400 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-03-25 00:04:01,743 INFO L241 Difference]: Finished difference. Result has 75 places, 53 transitions, 311 flow [2021-03-25 00:04:01,743 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2021-03-25 00:04:01,743 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 41 predicate places. [2021-03-25 00:04:01,743 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 311 flow [2021-03-25 00:04:01,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 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) [2021-03-25 00:04:01,743 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:04:01,744 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] [2021-03-25 00:04:01,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 00:04:01,744 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:04:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:04:01,744 INFO L82 PathProgramCache]: Analyzing trace with hash 926044432, now seen corresponding path program 22 times [2021-03-25 00:04:01,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:04:01,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452196102] [2021-03-25 00:04:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:04:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:04:01,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:04:01,790 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 00:04:01,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:04:01,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:04:01,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:04:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:04:01,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452196102] [2021-03-25 00:04:01,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:04:01,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 00:04:01,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233241229] [2021-03-25 00:04:01,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:04:01,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:04:01,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:04:01,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:04:01,803 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2021-03-25 00:04:01,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:04:01,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2021-03-25 00:04:01,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:04:01,883 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-25 00:04:01,883 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-03-25 00:04:01,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 24 events. 0/24 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 00:04:01,883 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2021-03-25 00:04:01,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 24 transitions, 151 flow [2021-03-25 00:04:01,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:04:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:04:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2021-03-25 00:04:01,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2021-03-25 00:04:01,884 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 280 transitions. [2021-03-25 00:04:01,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 280 transitions. [2021-03-25 00:04:01,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:04:01,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 280 transitions. [2021-03-25 00:04:01,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,886 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,886 INFO L185 Difference]: Start difference. First operand has 75 places, 53 transitions, 311 flow. Second operand 8 states and 280 transitions. [2021-03-25 00:04:01,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 24 transitions, 151 flow [2021-03-25 00:04:01,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 24 transitions, 104 flow, removed 0 selfloop flow, removed 21 redundant places. [2021-03-25 00:04:01,887 INFO L241 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2021-03-25 00:04:01,887 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2021-03-25 00:04:01,887 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2021-03-25 00:04:01,887 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2021-03-25 00:04:01,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:04:01,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 00:04:01,891 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:04:01 BasicIcfg [2021-03-25 00:04:01,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:04:01,892 INFO L168 Benchmark]: Toolchain (without parser) took 6029.87 ms. Allocated memory was 255.9 MB in the beginning and 507.5 MB in the end (delta: 251.7 MB). Free memory was 236.7 MB in the beginning and 363.4 MB in the end (delta: -126.7 MB). Peak memory consumption was 126.3 MB. Max. memory is 16.0 GB. [2021-03-25 00:04:01,892 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 255.9 MB. Free memory was 237.9 MB in the beginning and 237.8 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:04:01,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.39 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:04:01,892 INFO L168 Benchmark]: Boogie Preprocessor took 14.38 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 913.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:04:01,892 INFO L168 Benchmark]: RCFGBuilder took 287.39 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 234.1 MB in the end (delta: 121.7 kB). Peak memory consumption was 16.2 MB. Max. memory is 16.0 GB. [2021-03-25 00:04:01,893 INFO L168 Benchmark]: TraceAbstraction took 5698.05 ms. Allocated memory was 255.9 MB in the beginning and 507.5 MB in the end (delta: 251.7 MB). Free memory was 233.6 MB in the beginning and 363.4 MB in the end (delta: -129.8 MB). Peak memory consumption was 122.7 MB. Max. memory is 16.0 GB. [2021-03-25 00:04:01,893 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 0.25 ms. Allocated memory is still 255.9 MB. Free memory was 237.9 MB in the beginning and 237.8 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.39 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.38 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.3 MB in the end (delta: 913.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 287.39 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 234.1 MB in the end (delta: 121.7 kB). Peak memory consumption was 16.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5698.05 ms. Allocated memory was 255.9 MB in the beginning and 507.5 MB in the end (delta: 251.7 MB). Free memory was 233.6 MB in the beginning and 363.4 MB in the end (delta: -129.8 MB). Peak memory consumption was 122.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 489.5ms, 46 PlacesBefore, 34 PlacesAfterwards, 36 TransitionsBefore, 24 TransitionsAfterwards, 412 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 992 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 434, positive: 362, positive conditional: 0, positive unconditional: 362, negative: 72, negative conditional: 0, negative unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 280, positive: 247, positive conditional: 0, positive unconditional: 247, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 280, positive: 247, positive conditional: 0, positive unconditional: 247, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 280, positive: 243, positive conditional: 0, positive unconditional: 243, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 182, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 162, negative conditional: 0, negative unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 434, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 280, unknown conditional: 0, unknown unconditional: 280] , Statistics on independence cache: Total cache size (in pairs): 97, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5544.8ms, OverallIterations: 22, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3319.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 624.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 130 SDtfs, 315 SDslu, 100 SDs, 0 SdLazy, 1365 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 730.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1510.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=560occurred in iteration=9, InterpolantAutomatonStates: 183, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.1ms SsaConstructionTime, 133.5ms SatisfiabilityAnalysisTime, 1220.8ms InterpolantComputationTime, 528 NumberOfCodeBlocks, 528 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 506 ConstructedInterpolants, 0 QuantifiedInterpolants, 1876 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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...