/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/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:10:59,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:10:59,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:10:59,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-12 00:10:59,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-12 00:10:59,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-12 00:10:59,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-12 00:10:59,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-12 00:10:59,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-12 00:10:59,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-12 00:10:59,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-12 00:10:59,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-12 00:10:59,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 00:10:59,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 00:10:59,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 00:10:59,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 00:10:59,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 00:10:59,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 00:10:59,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 00:10:59,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 00:10:59,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 00:10:59,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 00:10:59,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 00:10:59,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 00:10:59,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 00:10:59,665 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 [2021-03-12 00:10:59,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:10:59,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:10:59,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:10:59,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:10:59,691 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:10:59,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:10:59,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:10:59,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:10:59,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:10:59,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:10:59,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:10:59,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:10:59,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:10:59,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:10:59,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:10:59,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:10:59,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:10:59,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:10:59,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:10:59,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:10:59,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:10:59,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:10:59,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:10:59,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:10:59,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:10:59,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:10:59,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:10:59,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:10:59,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:10:59,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:11:00,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:11:00,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:11:00,010 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:11:00,012 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:11:00,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-03-12 00:11:00,027 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-03-12 00:11:00,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:11:00,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:11:00,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:11:00,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:11:00,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:11:00,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:11:00,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:11:00,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:11:00,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:11:00,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/1) ... [2021-03-12 00:11:00,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:11:00,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:11:00,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:11:00,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:11:00,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (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 [2021-03-12 00:11:00,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:11:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:11:00,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:11:00,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:11:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:11:00,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:11:00,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:11:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:11:00,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:11:00,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 00:11:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 00:11:00,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 00:11:00,157 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 00:11:00,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:11:00,334 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:11:00,335 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:11:00 BoogieIcfgContainer [2021-03-12 00:11:00,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:11:00,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:11:00,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:11:00,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:11:00,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:11:00" (1/2) ... [2021-03-12 00:11:00,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30aeee0d and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:11:00, skipping insertion in model container [2021-03-12 00:11:00,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:11:00" (2/2) ... [2021-03-12 00:11:00,341 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-03-12 00:11:00,345 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:11:00,348 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:11:00,349 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:11:00,383 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-12 00:11:00,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-12 00:11:00,412 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:11:00,412 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:11:00,413 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:11:00,413 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:11:00,413 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:11:00,413 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:11:00,413 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:11:00,413 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:11:00,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 53 transitions, 130 flow [2021-03-12 00:11:00,458 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-12 00:11:00,458 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 00:11:00,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 00:11:00,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 53 transitions, 130 flow [2021-03-12 00:11:00,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 48 transitions, 114 flow [2021-03-12 00:11:00,467 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:11:00,476 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 48 transitions, 114 flow [2021-03-12 00:11:00,478 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 48 transitions, 114 flow [2021-03-12 00:11:00,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 48 transitions, 114 flow [2021-03-12 00:11:00,505 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-12 00:11:00,505 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 00:11:00,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 00:11:00,510 INFO L116 LiptonReduction]: Number of co-enabled transitions 1170 [2021-03-12 00:11:01,026 INFO L131 LiptonReduction]: Checked pairs total: 2992 [2021-03-12 00:11:01,027 INFO L133 LiptonReduction]: Total number of compositions: 10 [2021-03-12 00:11:01,028 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 563 [2021-03-12 00:11:01,063 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-03-12 00:11:01,063 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 00:11:01,063 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:01,064 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:01,064 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:01,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2098027768, now seen corresponding path program 1 times [2021-03-12 00:11:01,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:01,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287718544] [2021-03-12 00:11:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:01,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:01,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:01,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:01,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:01,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:01,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:01,354 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-12 00:11:01,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:01,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287718544] [2021-03-12 00:11:01,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:01,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:11:01,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875748050] [2021-03-12 00:11:01,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:01,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:01,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:01,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:01,388 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-12 00:11:01,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 94 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:01,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:01,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-12 00:11:01,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:01,634 INFO L129 PetriNetUnfolder]: 29/168 cut-off events. [2021-03-12 00:11:01,634 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-12 00:11:01,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 168 events. 29/168 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 852 event pairs, 3 based on Foata normal form. 1/168 useless extension candidates. Maximal degree in co-relation 249. Up to 28 conditions per place. [2021-03-12 00:11:01,640 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 21 selfloop transitions, 15 changer transitions 2/68 dead transitions. [2021-03-12 00:11:01,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 230 flow [2021-03-12 00:11:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:11:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:11:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-12 00:11:01,657 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-12 00:11:01,658 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-12 00:11:01,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-12 00:11:01,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:01,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-12 00:11:01,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:01,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:01,677 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:01,678 INFO L185 Difference]: Start difference. First operand has 48 places, 38 transitions, 94 flow. Second operand 11 states and 622 transitions. [2021-03-12 00:11:01,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 230 flow [2021-03-12 00:11:01,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 218 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-12 00:11:01,687 INFO L241 Difference]: Finished difference. Result has 56 places, 54 transitions, 174 flow [2021-03-12 00:11:01,689 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2021-03-12 00:11:01,689 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2021-03-12 00:11:01,689 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 174 flow [2021-03-12 00:11:01,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:01,690 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:01,690 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:01,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:11:01,690 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1337255146, now seen corresponding path program 2 times [2021-03-12 00:11:01,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:01,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232760797] [2021-03-12 00:11:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:01,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:01,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:01,820 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-03-12 00:11:01,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-12 00:11:01,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:11:01,833 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-12 00:11:01,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:01,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:01,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:11:01,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:01,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:01,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232760797] [2021-03-12 00:11:01,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:01,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:11:01,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160407359] [2021-03-12 00:11:01,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:11:01,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:01,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:11:01,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:11:01,864 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:01,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:01,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:01,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:01,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:02,242 INFO L129 PetriNetUnfolder]: 865/1981 cut-off events. [2021-03-12 00:11:02,243 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-03-12 00:11:02,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3806 conditions, 1981 events. 865/1981 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13798 event pairs, 234 based on Foata normal form. 24/1915 useless extension candidates. Maximal degree in co-relation 3789. Up to 1085 conditions per place. [2021-03-12 00:11:02,255 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 51 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2021-03-12 00:11:02,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 424 flow [2021-03-12 00:11:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:11:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:11:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 345 transitions. [2021-03-12 00:11:02,257 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6845238095238095 [2021-03-12 00:11:02,257 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 345 transitions. [2021-03-12 00:11:02,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 345 transitions. [2021-03-12 00:11:02,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:02,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 345 transitions. [2021-03-12 00:11:02,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,260 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,260 INFO L185 Difference]: Start difference. First operand has 56 places, 54 transitions, 174 flow. Second operand 8 states and 345 transitions. [2021-03-12 00:11:02,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 424 flow [2021-03-12 00:11:02,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 107 transitions, 422 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-12 00:11:02,265 INFO L241 Difference]: Finished difference. Result has 64 places, 75 transitions, 298 flow [2021-03-12 00:11:02,265 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=298, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2021-03-12 00:11:02,265 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2021-03-12 00:11:02,266 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 298 flow [2021-03-12 00:11:02,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,266 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:02,266 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:02,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 00:11:02,266 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1019645854, now seen corresponding path program 3 times [2021-03-12 00:11:02,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:02,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868200587] [2021-03-12 00:11:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:02,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:02,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:02,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:02,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868200587] [2021-03-12 00:11:02,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:02,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:11:02,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682583311] [2021-03-12 00:11:02,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:11:02,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:02,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:11:02,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:11:02,289 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-03-12 00:11:02,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:02,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-03-12 00:11:02,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:02,322 INFO L129 PetriNetUnfolder]: 72/401 cut-off events. [2021-03-12 00:11:02,322 INFO L130 PetriNetUnfolder]: For 104/110 co-relation queries the response was YES. [2021-03-12 00:11:02,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 401 events. 72/401 cut-off events. For 104/110 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2603 event pairs, 19 based on Foata normal form. 19/406 useless extension candidates. Maximal degree in co-relation 739. Up to 60 conditions per place. [2021-03-12 00:11:02,324 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 3 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2021-03-12 00:11:02,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 320 flow [2021-03-12 00:11:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:11:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:11:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2021-03-12 00:11:02,325 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.91005291005291 [2021-03-12 00:11:02,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2021-03-12 00:11:02,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2021-03-12 00:11:02,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:02,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2021-03-12 00:11:02,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,327 INFO L185 Difference]: Start difference. First operand has 64 places, 75 transitions, 298 flow. Second operand 3 states and 172 transitions. [2021-03-12 00:11:02,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 320 flow [2021-03-12 00:11:02,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-12 00:11:02,330 INFO L241 Difference]: Finished difference. Result has 67 places, 75 transitions, 326 flow [2021-03-12 00:11:02,331 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=67, PETRI_TRANSITIONS=75} [2021-03-12 00:11:02,331 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2021-03-12 00:11:02,331 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 75 transitions, 326 flow [2021-03-12 00:11:02,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,331 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:02,331 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:02,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 00:11:02,331 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash 950404250, now seen corresponding path program 4 times [2021-03-12 00:11:02,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:02,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774700248] [2021-03-12 00:11:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:02,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:02,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:02,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:02,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774700248] [2021-03-12 00:11:02,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:02,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:11:02,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404853969] [2021-03-12 00:11:02,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:11:02,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:02,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:11:02,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:11:02,352 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-03-12 00:11:02,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 75 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:02,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-03-12 00:11:02,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:02,389 INFO L129 PetriNetUnfolder]: 81/459 cut-off events. [2021-03-12 00:11:02,389 INFO L130 PetriNetUnfolder]: For 206/209 co-relation queries the response was YES. [2021-03-12 00:11:02,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 459 events. 81/459 cut-off events. For 206/209 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3037 event pairs, 26 based on Foata normal form. 11/454 useless extension candidates. Maximal degree in co-relation 937. Up to 62 conditions per place. [2021-03-12 00:11:02,392 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 3 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2021-03-12 00:11:02,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 350 flow [2021-03-12 00:11:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:11:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:11:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2021-03-12 00:11:02,393 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.91005291005291 [2021-03-12 00:11:02,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2021-03-12 00:11:02,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2021-03-12 00:11:02,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:02,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2021-03-12 00:11:02,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,395 INFO L185 Difference]: Start difference. First operand has 67 places, 75 transitions, 326 flow. Second operand 3 states and 172 transitions. [2021-03-12 00:11:02,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 350 flow [2021-03-12 00:11:02,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:11:02,398 INFO L241 Difference]: Finished difference. Result has 68 places, 75 transitions, 341 flow [2021-03-12 00:11:02,399 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2021-03-12 00:11:02,399 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2021-03-12 00:11:02,399 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 341 flow [2021-03-12 00:11:02,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,399 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:02,399 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:02,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-12 00:11:02,400 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:02,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1355113274, now seen corresponding path program 5 times [2021-03-12 00:11:02,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:02,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867032683] [2021-03-12 00:11:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:02,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,525 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-12 00:11:02,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:02,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867032683] [2021-03-12 00:11:02,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:02,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:11:02,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770333012] [2021-03-12 00:11:02,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:02,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:02,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:02,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:02,538 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-12 00:11:02,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 341 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:02,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-12 00:11:02,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:02,780 INFO L129 PetriNetUnfolder]: 108/638 cut-off events. [2021-03-12 00:11:02,780 INFO L130 PetriNetUnfolder]: For 266/273 co-relation queries the response was YES. [2021-03-12 00:11:02,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 638 events. 108/638 cut-off events. For 266/273 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4674 event pairs, 33 based on Foata normal form. 6/629 useless extension candidates. Maximal degree in co-relation 1367. Up to 81 conditions per place. [2021-03-12 00:11:02,785 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 30 selfloop transitions, 22 changer transitions 2/105 dead transitions. [2021-03-12 00:11:02,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 568 flow [2021-03-12 00:11:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:11:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:11:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-12 00:11:02,788 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-12 00:11:02,788 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-12 00:11:02,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-12 00:11:02,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:02,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-12 00:11:02,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,792 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,792 INFO L185 Difference]: Start difference. First operand has 68 places, 75 transitions, 341 flow. Second operand 11 states and 622 transitions. [2021-03-12 00:11:02,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 568 flow [2021-03-12 00:11:02,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:11:02,797 INFO L241 Difference]: Finished difference. Result has 81 places, 90 transitions, 479 flow [2021-03-12 00:11:02,797 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=479, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2021-03-12 00:11:02,798 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 33 predicate places. [2021-03-12 00:11:02,798 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 479 flow [2021-03-12 00:11:02,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,798 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:02,798 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:02,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-12 00:11:02,799 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:02,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1531178196, now seen corresponding path program 6 times [2021-03-12 00:11:02,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:02,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748568407] [2021-03-12 00:11:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:02,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:02,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:02,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:11:02,908 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:11:02,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:02,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:02,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:02,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748568407] [2021-03-12 00:11:02,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:02,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:11:02,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515165041] [2021-03-12 00:11:02,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:02,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:02,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:02,950 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:02,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 479 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:02,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:02,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:02,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:03,590 INFO L129 PetriNetUnfolder]: 1869/4449 cut-off events. [2021-03-12 00:11:03,590 INFO L130 PetriNetUnfolder]: For 2385/2432 co-relation queries the response was YES. [2021-03-12 00:11:03,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11646 conditions, 4449 events. 1869/4449 cut-off events. For 2385/2432 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 37364 event pairs, 452 based on Foata normal form. 36/4270 useless extension candidates. Maximal degree in co-relation 11603. Up to 1666 conditions per place. [2021-03-12 00:11:03,633 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 92 selfloop transitions, 63 changer transitions 0/205 dead transitions. [2021-03-12 00:11:03,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 205 transitions, 1179 flow [2021-03-12 00:11:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:11:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:11:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 500 transitions. [2021-03-12 00:11:03,636 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7215007215007215 [2021-03-12 00:11:03,636 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 500 transitions. [2021-03-12 00:11:03,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 500 transitions. [2021-03-12 00:11:03,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:03,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 500 transitions. [2021-03-12 00:11:03,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 45.45454545454545) internal successors, (500), 11 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:03,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:03,639 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:03,639 INFO L185 Difference]: Start difference. First operand has 81 places, 90 transitions, 479 flow. Second operand 11 states and 500 transitions. [2021-03-12 00:11:03,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 205 transitions, 1179 flow [2021-03-12 00:11:03,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 205 transitions, 1165 flow, removed 7 selfloop flow, removed 1 redundant places. [2021-03-12 00:11:03,662 INFO L241 Difference]: Finished difference. Result has 96 places, 141 transitions, 945 flow [2021-03-12 00:11:03,662 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=945, PETRI_PLACES=96, PETRI_TRANSITIONS=141} [2021-03-12 00:11:03,662 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 48 predicate places. [2021-03-12 00:11:03,662 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 945 flow [2021-03-12 00:11:03,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:03,663 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:03,663 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:03,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-12 00:11:03,663 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1062154868, now seen corresponding path program 7 times [2021-03-12 00:11:03,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:03,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408830558] [2021-03-12 00:11:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:03,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:03,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:03,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:03,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:03,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:03,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:03,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:03,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:03,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:03,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:03,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:03,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:03,750 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-12 00:11:03,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:03,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408830558] [2021-03-12 00:11:03,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:03,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:11:03,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240563334] [2021-03-12 00:11:03,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:03,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:03,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:03,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:03,762 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-12 00:11:03,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 945 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:03,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:03,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-12 00:11:03,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:04,124 INFO L129 PetriNetUnfolder]: 521/2138 cut-off events. [2021-03-12 00:11:04,124 INFO L130 PetriNetUnfolder]: For 2408/2486 co-relation queries the response was YES. [2021-03-12 00:11:04,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6738 conditions, 2138 events. 521/2138 cut-off events. For 2408/2486 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20046 event pairs, 114 based on Foata normal form. 46/2090 useless extension candidates. Maximal degree in co-relation 6459. Up to 467 conditions per place. [2021-03-12 00:11:04,145 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 32 selfloop transitions, 31 changer transitions 0/165 dead transitions. [2021-03-12 00:11:04,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 1199 flow [2021-03-12 00:11:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:11:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:11:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-12 00:11:04,147 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-12 00:11:04,147 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-12 00:11:04,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-12 00:11:04,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:04,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-12 00:11:04,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:04,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:04,150 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:04,151 INFO L185 Difference]: Start difference. First operand has 96 places, 141 transitions, 945 flow. Second operand 11 states and 622 transitions. [2021-03-12 00:11:04,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 1199 flow [2021-03-12 00:11:04,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 165 transitions, 1173 flow, removed 13 selfloop flow, removed 0 redundant places. [2021-03-12 00:11:04,176 INFO L241 Difference]: Finished difference. Result has 111 places, 153 transitions, 1100 flow [2021-03-12 00:11:04,176 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1100, PETRI_PLACES=111, PETRI_TRANSITIONS=153} [2021-03-12 00:11:04,176 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 63 predicate places. [2021-03-12 00:11:04,176 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 153 transitions, 1100 flow [2021-03-12 00:11:04,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:04,177 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:04,177 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:04,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-12 00:11:04,177 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:04,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:04,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1083875596, now seen corresponding path program 8 times [2021-03-12 00:11:04,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:04,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054401847] [2021-03-12 00:11:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:04,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:04,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:04,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:04,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:04,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:04,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:04,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:04,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:04,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:04,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:04,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:04,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:04,272 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-03-12 00:11:04,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:04,295 INFO L142 QuantifierPusher]: treesize reduction 16, result has 55.6 percent of original size [2021-03-12 00:11:04,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:11:04,322 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-12 00:11:04,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-12 00:11:04,348 INFO L142 QuantifierPusher]: treesize reduction 36, result has 44.6 percent of original size [2021-03-12 00:11:04,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-12 00:11:04,377 INFO L142 QuantifierPusher]: treesize reduction 24, result has 36.8 percent of original size [2021-03-12 00:11:04,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:11:04,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:04,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:04,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054401847] [2021-03-12 00:11:04,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:04,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-12 00:11:04,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128931576] [2021-03-12 00:11:04,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 00:11:04,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:04,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 00:11:04,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-03-12 00:11:04,393 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:04,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 153 transitions, 1100 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:04,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:04,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:04,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:05,662 INFO L129 PetriNetUnfolder]: 3054/7790 cut-off events. [2021-03-12 00:11:05,663 INFO L130 PetriNetUnfolder]: For 14779/15052 co-relation queries the response was YES. [2021-03-12 00:11:05,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27587 conditions, 7790 events. 3054/7790 cut-off events. For 14779/15052 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 75091 event pairs, 475 based on Foata normal form. 155/7679 useless extension candidates. Maximal degree in co-relation 27196. Up to 2894 conditions per place. [2021-03-12 00:11:05,732 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 135 selfloop transitions, 117 changer transitions 0/314 dead transitions. [2021-03-12 00:11:05,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 314 transitions, 2526 flow [2021-03-12 00:11:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-12 00:11:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-12 00:11:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 600 transitions. [2021-03-12 00:11:05,734 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6802721088435374 [2021-03-12 00:11:05,734 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 600 transitions. [2021-03-12 00:11:05,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 600 transitions. [2021-03-12 00:11:05,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:05,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 600 transitions. [2021-03-12 00:11:05,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 42.857142857142854) internal successors, (600), 14 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:05,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:05,738 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:05,738 INFO L185 Difference]: Start difference. First operand has 111 places, 153 transitions, 1100 flow. Second operand 14 states and 600 transitions. [2021-03-12 00:11:05,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 314 transitions, 2526 flow [2021-03-12 00:11:05,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 314 transitions, 2497 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-12 00:11:05,965 INFO L241 Difference]: Finished difference. Result has 131 places, 252 transitions, 2224 flow [2021-03-12 00:11:05,966 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2224, PETRI_PLACES=131, PETRI_TRANSITIONS=252} [2021-03-12 00:11:05,966 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 83 predicate places. [2021-03-12 00:11:05,966 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 252 transitions, 2224 flow [2021-03-12 00:11:05,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:05,966 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:05,966 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:05,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-12 00:11:05,967 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:05,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:05,967 INFO L82 PathProgramCache]: Analyzing trace with hash -885103096, now seen corresponding path program 9 times [2021-03-12 00:11:05,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:05,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218642654] [2021-03-12 00:11:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:06,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:06,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:06,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:06,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:06,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:06,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:06,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:06,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:06,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:06,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:06,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:06,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:06,065 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-12 00:11:06,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:06,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218642654] [2021-03-12 00:11:06,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:06,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:11:06,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734944196] [2021-03-12 00:11:06,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:06,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:06,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:06,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:06,077 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-12 00:11:06,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 252 transitions, 2224 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:06,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:06,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-12 00:11:06,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:07,001 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([150] L68-->thread3EXIT: Formula: (= v_n3_63 0) InVars {} OutVars{n3=v_n3_63} AuxVars[] AssignedVars[n3][137], [67#true, 196#(and (<= 1 i2) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), Black: 192#(and (<= 1 i2) (<= 2 i) (<= i3 2) (<= i 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), Black: 194#(and (<= 1 i2) (<= i2 1) (<= i1 0) (<= 0 i1)), Black: 186#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 190#(and (<= 1 i2) (<= 2 i) (<= i 2) (<= i2 1) (<= i1 0) (<= 0 i1)), 10#thread1EXITtrue, 203#true, Black: 131#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 135#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 121#(and (<= i 0) (<= 0 i)), 148#true, Black: 83#(and (<= i3 0) (<= 2 i) (<= i1 1) (<= i 2) (<= 0 i3) (<= 1 i1)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, 32#L77true, Black: 224#(and (<= 1 n3) (<= n2 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 208#(and (<= 0 n1) (<= 0 n3) (<= n3 0)), Black: 209#(and (<= 1 n1) (<= 0 n3) (<= n3 0)), Black: 210#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 160#(and (<= n1 n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 211#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 218#(and (<= 1 n1) (<= 0 n3) (<= n2 n1) (<= n3 0)), Black: 164#(and (<= n2 n3) (<= 1 n2) (<= 2 n3)), 40#thread2EXITtrue, Black: 220#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (< n3 (+ n1 1))), Black: 150#(and (<= n1 n3) (<= n3 n2) (<= 0 n2)), Black: 151#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 97#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 205#(and (<= n1 n3) (<= 0 n1) (<= n2 n1) (<= n3 0)), Black: 152#(and (<= n3 n2) (<= 0 n2)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 222#(and (<= 1 n3) (or (and (not (= n3 n1)) (< n3 (+ n1 1))) (not (= n2 0))) (<= n2 n3)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 206#(and (<= 0 n1) (<= 0 n3) (<= n2 n3) (<= n3 0)), Black: 153#(and (<= 1 n2) (<= (+ n3 1) n2)), 236#true, Black: 154#(and (= n3 n2) (<= 1 n2)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), Black: 158#(and (<= n1 n3) (<= 1 n2) (<= (+ n3 1) n2)), Black: 111#e2, 50#thread3EXITtrue, Black: 116#e3, 122#(and (<= i1 0) (<= 0 i1))]) [2021-03-12 00:11:07,001 INFO L384 tUnfolder$Statistics]: this new event has 34 ancestors and is not cut-off event [2021-03-12 00:11:07,001 INFO L387 tUnfolder$Statistics]: existing Event has 34 ancestors and is not cut-off event [2021-03-12 00:11:07,001 INFO L387 tUnfolder$Statistics]: existing Event has 34 ancestors and is not cut-off event [2021-03-12 00:11:07,002 INFO L387 tUnfolder$Statistics]: existing Event has 34 ancestors and is not cut-off event [2021-03-12 00:11:07,060 INFO L129 PetriNetUnfolder]: 1888/5799 cut-off events. [2021-03-12 00:11:07,060 INFO L130 PetriNetUnfolder]: For 15434/16134 co-relation queries the response was YES. [2021-03-12 00:11:07,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23443 conditions, 5799 events. 1888/5799 cut-off events. For 15434/16134 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 59760 event pairs, 315 based on Foata normal form. 226/5760 useless extension candidates. Maximal degree in co-relation 22937. Up to 1278 conditions per place. [2021-03-12 00:11:07,119 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 40 selfloop transitions, 31 changer transitions 1/272 dead transitions. [2021-03-12 00:11:07,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 272 transitions, 2491 flow [2021-03-12 00:11:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:11:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:11:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-12 00:11:07,121 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-12 00:11:07,121 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-12 00:11:07,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-12 00:11:07,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:07,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-12 00:11:07,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:07,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:07,124 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:07,125 INFO L185 Difference]: Start difference. First operand has 131 places, 252 transitions, 2224 flow. Second operand 11 states and 622 transitions. [2021-03-12 00:11:07,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 272 transitions, 2491 flow [2021-03-12 00:11:07,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 272 transitions, 2417 flow, removed 37 selfloop flow, removed 0 redundant places. [2021-03-12 00:11:07,283 INFO L241 Difference]: Finished difference. Result has 146 places, 262 transitions, 2325 flow [2021-03-12 00:11:07,284 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2325, PETRI_PLACES=146, PETRI_TRANSITIONS=262} [2021-03-12 00:11:07,284 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 98 predicate places. [2021-03-12 00:11:07,284 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 262 transitions, 2325 flow [2021-03-12 00:11:07,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:07,284 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:07,285 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:07,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-12 00:11:07,285 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:07,285 INFO L82 PathProgramCache]: Analyzing trace with hash -954946064, now seen corresponding path program 10 times [2021-03-12 00:11:07,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:07,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487821628] [2021-03-12 00:11:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:07,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:07,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:07,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:07,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:07,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:07,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:07,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:07,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:07,361 INFO L142 QuantifierPusher]: treesize reduction 3, result has 89.3 percent of original size [2021-03-12 00:11:07,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-12 00:11:07,368 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-12 00:11:07,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:11:07,384 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-12 00:11:07,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:07,401 INFO L142 QuantifierPusher]: treesize reduction 11, result has 62.1 percent of original size [2021-03-12 00:11:07,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:11:07,421 INFO L142 QuantifierPusher]: treesize reduction 12, result has 50.0 percent of original size [2021-03-12 00:11:07,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:07,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:07,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:07,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:07,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:07,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487821628] [2021-03-12 00:11:07,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:07,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:11:07,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036120574] [2021-03-12 00:11:07,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:07,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:07,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:07,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:07,449 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:07,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 262 transitions, 2325 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:07,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:07,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:07,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:09,099 INFO L129 PetriNetUnfolder]: 3848/10320 cut-off events. [2021-03-12 00:11:09,099 INFO L130 PetriNetUnfolder]: For 33590/35290 co-relation queries the response was YES. [2021-03-12 00:11:09,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43276 conditions, 10320 events. 3848/10320 cut-off events. For 33590/35290 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 107337 event pairs, 868 based on Foata normal form. 388/10350 useless extension candidates. Maximal degree in co-relation 42569. Up to 4087 conditions per place. [2021-03-12 00:11:09,194 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 199 selfloop transitions, 134 changer transitions 7/413 dead transitions. [2021-03-12 00:11:09,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 413 transitions, 4007 flow [2021-03-12 00:11:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-12 00:11:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-12 00:11:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 517 transitions. [2021-03-12 00:11:09,197 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6838624338624338 [2021-03-12 00:11:09,197 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 517 transitions. [2021-03-12 00:11:09,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 517 transitions. [2021-03-12 00:11:09,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:09,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 517 transitions. [2021-03-12 00:11:09,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.083333333333336) internal successors, (517), 12 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:09,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:09,200 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:09,200 INFO L185 Difference]: Start difference. First operand has 146 places, 262 transitions, 2325 flow. Second operand 12 states and 517 transitions. [2021-03-12 00:11:09,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 413 transitions, 4007 flow [2021-03-12 00:11:09,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 413 transitions, 3974 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-12 00:11:09,544 INFO L241 Difference]: Finished difference. Result has 163 places, 345 transitions, 3368 flow [2021-03-12 00:11:09,544 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3368, PETRI_PLACES=163, PETRI_TRANSITIONS=345} [2021-03-12 00:11:09,544 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 115 predicate places. [2021-03-12 00:11:09,545 INFO L480 AbstractCegarLoop]: Abstraction has has 163 places, 345 transitions, 3368 flow [2021-03-12 00:11:09,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:09,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:09,545 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:09,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-12 00:11:09,545 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:09,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:09,546 INFO L82 PathProgramCache]: Analyzing trace with hash -242919484, now seen corresponding path program 11 times [2021-03-12 00:11:09,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:09,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49538092] [2021-03-12 00:11:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:09,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:09,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:09,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:09,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:09,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:09,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:11:09,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:09,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:09,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:09,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:09,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:09,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:11:09,621 INFO L142 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-03-12 00:11:09,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:09,636 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:11:09,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:09,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:09,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:09,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49538092] [2021-03-12 00:11:09,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:09,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:11:09,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66740184] [2021-03-12 00:11:09,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:11:09,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:09,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:11:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:11:09,640 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:09,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 345 transitions, 3368 flow. Second operand has 8 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) [2021-03-12 00:11:09,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:09,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:09,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:11,216 INFO L129 PetriNetUnfolder]: 3959/10515 cut-off events. [2021-03-12 00:11:11,216 INFO L130 PetriNetUnfolder]: For 58444/60842 co-relation queries the response was YES. [2021-03-12 00:11:11,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49784 conditions, 10515 events. 3959/10515 cut-off events. For 58444/60842 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 109224 event pairs, 967 based on Foata normal form. 249/10381 useless extension candidates. Maximal degree in co-relation 49041. Up to 6261 conditions per place. [2021-03-12 00:11:11,308 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 282 selfloop transitions, 46 changer transitions 1/402 dead transitions. [2021-03-12 00:11:11,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 402 transitions, 4485 flow [2021-03-12 00:11:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:11:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:11:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 340 transitions. [2021-03-12 00:11:11,310 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2021-03-12 00:11:11,310 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 340 transitions. [2021-03-12 00:11:11,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 340 transitions. [2021-03-12 00:11:11,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:11,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 340 transitions. [2021-03-12 00:11:11,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.5) internal successors, (340), 8 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:11,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:11,312 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:11,312 INFO L185 Difference]: Start difference. First operand has 163 places, 345 transitions, 3368 flow. Second operand 8 states and 340 transitions. [2021-03-12 00:11:11,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 402 transitions, 4485 flow [2021-03-12 00:11:11,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 402 transitions, 4400 flow, removed 42 selfloop flow, removed 1 redundant places. [2021-03-12 00:11:11,815 INFO L241 Difference]: Finished difference. Result has 173 places, 374 transitions, 3729 flow [2021-03-12 00:11:11,815 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3729, PETRI_PLACES=173, PETRI_TRANSITIONS=374} [2021-03-12 00:11:11,815 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 125 predicate places. [2021-03-12 00:11:11,815 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 374 transitions, 3729 flow [2021-03-12 00:11:11,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 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) [2021-03-12 00:11:11,816 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:11,816 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:11,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-12 00:11:11,816 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1350509402, now seen corresponding path program 12 times [2021-03-12 00:11:11,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:11,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044572240] [2021-03-12 00:11:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:11,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:11,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:11,854 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-12 00:11:11,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:11,859 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-12 00:11:11,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:11,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:11,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:11,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:11,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:11,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:11,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:11,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:11:11,970 INFO L142 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-03-12 00:11:11,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:11:11,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:11,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:11,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:11,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:11,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044572240] [2021-03-12 00:11:11,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:11,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:11:11,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573258520] [2021-03-12 00:11:11,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:11:11,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:11,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:11:11,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:11:11,982 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:11,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 374 transitions, 3729 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:11,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:11,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:11,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:13,841 INFO L129 PetriNetUnfolder]: 3648/11643 cut-off events. [2021-03-12 00:11:13,841 INFO L130 PetriNetUnfolder]: For 68585/70737 co-relation queries the response was YES. [2021-03-12 00:11:13,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54387 conditions, 11643 events. 3648/11643 cut-off events. For 68585/70737 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 134966 event pairs, 893 based on Foata normal form. 348/11624 useless extension candidates. Maximal degree in co-relation 53129. Up to 3146 conditions per place. [2021-03-12 00:11:13,928 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 286 selfloop transitions, 140 changer transitions 13/512 dead transitions. [2021-03-12 00:11:13,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 512 transitions, 5873 flow [2021-03-12 00:11:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:11:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:11:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2021-03-12 00:11:13,929 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7233560090702947 [2021-03-12 00:11:13,930 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 319 transitions. [2021-03-12 00:11:13,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 319 transitions. [2021-03-12 00:11:13,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:13,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 319 transitions. [2021-03-12 00:11:13,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.57142857142857) internal successors, (319), 7 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:13,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:13,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:13,932 INFO L185 Difference]: Start difference. First operand has 173 places, 374 transitions, 3729 flow. Second operand 7 states and 319 transitions. [2021-03-12 00:11:13,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 512 transitions, 5873 flow [2021-03-12 00:11:14,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 512 transitions, 5732 flow, removed 54 selfloop flow, removed 2 redundant places. [2021-03-12 00:11:14,411 INFO L241 Difference]: Finished difference. Result has 182 places, 410 transitions, 4566 flow [2021-03-12 00:11:14,411 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4566, PETRI_PLACES=182, PETRI_TRANSITIONS=410} [2021-03-12 00:11:14,412 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 134 predicate places. [2021-03-12 00:11:14,412 INFO L480 AbstractCegarLoop]: Abstraction has has 182 places, 410 transitions, 4566 flow [2021-03-12 00:11:14,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:14,412 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:14,412 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:14,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-12 00:11:14,412 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:14,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1888144620, now seen corresponding path program 13 times [2021-03-12 00:11:14,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:14,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899965471] [2021-03-12 00:11:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:14,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:14,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:14,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:14,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:14,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:14,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:14,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:14,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:14,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:14,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:14,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:14,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:14,468 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-12 00:11:14,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:14,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899965471] [2021-03-12 00:11:14,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:14,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:11:14,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138063744] [2021-03-12 00:11:14,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:14,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:14,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:14,479 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-12 00:11:14,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 410 transitions, 4566 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:14,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:14,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-12 00:11:14,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:16,105 INFO L129 PetriNetUnfolder]: 2396/9784 cut-off events. [2021-03-12 00:11:16,105 INFO L130 PetriNetUnfolder]: For 56993/58819 co-relation queries the response was YES. [2021-03-12 00:11:16,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45534 conditions, 9784 events. 2396/9784 cut-off events. For 56993/58819 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 122065 event pairs, 450 based on Foata normal form. 368/9660 useless extension candidates. Maximal degree in co-relation 44489. Up to 2228 conditions per place. [2021-03-12 00:11:16,284 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 50 selfloop transitions, 39 changer transitions 0/437 dead transitions. [2021-03-12 00:11:16,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 437 transitions, 4963 flow [2021-03-12 00:11:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:11:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:11:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-12 00:11:16,296 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-12 00:11:16,296 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-12 00:11:16,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-12 00:11:16,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:16,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-12 00:11:16,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:16,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:16,299 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:16,299 INFO L185 Difference]: Start difference. First operand has 182 places, 410 transitions, 4566 flow. Second operand 11 states and 622 transitions. [2021-03-12 00:11:16,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 437 transitions, 4963 flow [2021-03-12 00:11:16,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 437 transitions, 4944 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-03-12 00:11:16,654 INFO L241 Difference]: Finished difference. Result has 194 places, 424 transitions, 4783 flow [2021-03-12 00:11:16,654 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=4547, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4783, PETRI_PLACES=194, PETRI_TRANSITIONS=424} [2021-03-12 00:11:16,654 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 146 predicate places. [2021-03-12 00:11:16,654 INFO L480 AbstractCegarLoop]: Abstraction has has 194 places, 424 transitions, 4783 flow [2021-03-12 00:11:16,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:16,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:16,654 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:16,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-12 00:11:16,655 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:16,655 INFO L82 PathProgramCache]: Analyzing trace with hash -856304676, now seen corresponding path program 14 times [2021-03-12 00:11:16,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:16,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364632617] [2021-03-12 00:11:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:16,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:16,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:16,692 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-12 00:11:16,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:16,694 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-12 00:11:16,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:16,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:16,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:16,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:16,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:16,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:16,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:11:16,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:16,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:16,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:16,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:16,767 INFO L142 QuantifierPusher]: treesize reduction 11, result has 38.9 percent of original size [2021-03-12 00:11:16,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:16,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-12 00:11:16,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:16,779 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-12 00:11:16,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:16,780 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-03-12 00:11:16,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:16,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:16,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:16,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364632617] [2021-03-12 00:11:16,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:16,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:11:16,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60339502] [2021-03-12 00:11:16,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:11:16,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:16,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:11:16,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:11:16,782 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:16,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 424 transitions, 4783 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:16,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:16,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:16,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:19,430 INFO L129 PetriNetUnfolder]: 4513/14285 cut-off events. [2021-03-12 00:11:19,430 INFO L130 PetriNetUnfolder]: For 111385/114536 co-relation queries the response was YES. [2021-03-12 00:11:19,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73888 conditions, 14285 events. 4513/14285 cut-off events. For 111385/114536 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 171332 event pairs, 486 based on Foata normal form. 891/14785 useless extension candidates. Maximal degree in co-relation 72076. Up to 3306 conditions per place. [2021-03-12 00:11:19,537 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 259 selfloop transitions, 334 changer transitions 9/689 dead transitions. [2021-03-12 00:11:19,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 689 transitions, 8868 flow [2021-03-12 00:11:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 00:11:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-12 00:11:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 689 transitions. [2021-03-12 00:11:19,539 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.683531746031746 [2021-03-12 00:11:19,539 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 689 transitions. [2021-03-12 00:11:19,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 689 transitions. [2021-03-12 00:11:19,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:19,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 689 transitions. [2021-03-12 00:11:19,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 43.0625) internal successors, (689), 16 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:19,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:19,542 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:19,542 INFO L185 Difference]: Start difference. First operand has 194 places, 424 transitions, 4783 flow. Second operand 16 states and 689 transitions. [2021-03-12 00:11:19,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 689 transitions, 8868 flow [2021-03-12 00:11:20,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 689 transitions, 8742 flow, removed 29 selfloop flow, removed 9 redundant places. [2021-03-12 00:11:20,263 INFO L241 Difference]: Finished difference. Result has 214 places, 581 transitions, 7988 flow [2021-03-12 00:11:20,263 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7988, PETRI_PLACES=214, PETRI_TRANSITIONS=581} [2021-03-12 00:11:20,263 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 166 predicate places. [2021-03-12 00:11:20,263 INFO L480 AbstractCegarLoop]: Abstraction has has 214 places, 581 transitions, 7988 flow [2021-03-12 00:11:20,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:20,263 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:20,263 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:20,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-12 00:11:20,264 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:20,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1645910130, now seen corresponding path program 15 times [2021-03-12 00:11:20,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:20,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411798447] [2021-03-12 00:11:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:20,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:20,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-12 00:11:20,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:20,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:20,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:20,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:20,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:20,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:20,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:20,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:20,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:20,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:20,342 INFO L142 QuantifierPusher]: treesize reduction 10, result has 56.5 percent of original size [2021-03-12 00:11:20,343 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-03-12 00:11:20,356 INFO L142 QuantifierPusher]: treesize reduction 26, result has 61.2 percent of original size [2021-03-12 00:11:20,357 INFO L147 QuantifierPusher]: treesize reduction 5, result has 87.8 percent of original size 36 [2021-03-12 00:11:20,387 INFO L142 QuantifierPusher]: treesize reduction 39, result has 40.9 percent of original size [2021-03-12 00:11:20,388 INFO L147 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size 22 [2021-03-12 00:11:20,411 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-12 00:11:20,419 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-12 00:11:20,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:20,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:20,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411798447] [2021-03-12 00:11:20,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:20,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:11:20,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796032852] [2021-03-12 00:11:20,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:11:20,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:20,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:11:20,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:11:20,438 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:20,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 581 transitions, 7988 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:20,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:20,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:20,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:22,761 INFO L129 PetriNetUnfolder]: 3826/11716 cut-off events. [2021-03-12 00:11:22,762 INFO L130 PetriNetUnfolder]: For 148653/152044 co-relation queries the response was YES. [2021-03-12 00:11:22,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70413 conditions, 11716 events. 3826/11716 cut-off events. For 148653/152044 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 133025 event pairs, 1004 based on Foata normal form. 532/11948 useless extension candidates. Maximal degree in co-relation 69202. Up to 6231 conditions per place. [2021-03-12 00:11:22,870 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 485 selfloop transitions, 78 changer transitions 5/655 dead transitions. [2021-03-12 00:11:22,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 655 transitions, 10049 flow [2021-03-12 00:11:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:11:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:11:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 386 transitions. [2021-03-12 00:11:22,871 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6807760141093474 [2021-03-12 00:11:22,872 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 386 transitions. [2021-03-12 00:11:22,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 386 transitions. [2021-03-12 00:11:22,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:22,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 386 transitions. [2021-03-12 00:11:22,872 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) [2021-03-12 00:11:22,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:22,874 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:22,874 INFO L185 Difference]: Start difference. First operand has 214 places, 581 transitions, 7988 flow. Second operand 9 states and 386 transitions. [2021-03-12 00:11:22,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 655 transitions, 10049 flow [2021-03-12 00:11:23,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 655 transitions, 9755 flow, removed 130 selfloop flow, removed 2 redundant places. [2021-03-12 00:11:23,652 INFO L241 Difference]: Finished difference. Result has 225 places, 597 transitions, 8297 flow [2021-03-12 00:11:23,653 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7654, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8297, PETRI_PLACES=225, PETRI_TRANSITIONS=597} [2021-03-12 00:11:23,653 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 177 predicate places. [2021-03-12 00:11:23,653 INFO L480 AbstractCegarLoop]: Abstraction has has 225 places, 597 transitions, 8297 flow [2021-03-12 00:11:23,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:23,653 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:23,654 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:23,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-12 00:11:23,654 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:23,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:23,654 INFO L82 PathProgramCache]: Analyzing trace with hash -527402396, now seen corresponding path program 16 times [2021-03-12 00:11:23,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:23,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030544191] [2021-03-12 00:11:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:23,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:23,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:23,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:23,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:23,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:23,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:23,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:23,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:23,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:23,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:23,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:23,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:23,740 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-03-12 00:11:23,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:23,752 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-12 00:11:23,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:23,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:23,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:23,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030544191] [2021-03-12 00:11:23,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:23,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:11:23,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718062946] [2021-03-12 00:11:23,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:23,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:23,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:23,768 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:23,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 597 transitions, 8297 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:23,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:23,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:23,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:26,008 INFO L129 PetriNetUnfolder]: 3631/10746 cut-off events. [2021-03-12 00:11:26,008 INFO L130 PetriNetUnfolder]: For 134516/137062 co-relation queries the response was YES. [2021-03-12 00:11:26,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65248 conditions, 10746 events. 3631/10746 cut-off events. For 134516/137062 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 118626 event pairs, 867 based on Foata normal form. 580/11051 useless extension candidates. Maximal degree in co-relation 64334. Up to 4891 conditions per place. [2021-03-12 00:11:26,107 INFO L132 encePairwiseOnDemand]: 48/63 looper letters, 425 selfloop transitions, 240 changer transitions 20/772 dead transitions. [2021-03-12 00:11:26,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 772 transitions, 11847 flow [2021-03-12 00:11:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-12 00:11:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-12 00:11:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 736 transitions. [2021-03-12 00:11:26,110 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6872082166199813 [2021-03-12 00:11:26,110 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 736 transitions. [2021-03-12 00:11:26,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 736 transitions. [2021-03-12 00:11:26,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:26,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 736 transitions. [2021-03-12 00:11:26,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 43.294117647058826) internal successors, (736), 17 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:26,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 63.0) internal successors, (1134), 18 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:26,113 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 63.0) internal successors, (1134), 18 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:26,113 INFO L185 Difference]: Start difference. First operand has 225 places, 597 transitions, 8297 flow. Second operand 17 states and 736 transitions. [2021-03-12 00:11:26,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 772 transitions, 11847 flow [2021-03-12 00:11:26,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 772 transitions, 11749 flow, removed 33 selfloop flow, removed 1 redundant places. [2021-03-12 00:11:26,825 INFO L241 Difference]: Finished difference. Result has 252 places, 644 transitions, 9589 flow [2021-03-12 00:11:26,825 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7884, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9589, PETRI_PLACES=252, PETRI_TRANSITIONS=644} [2021-03-12 00:11:26,825 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 204 predicate places. [2021-03-12 00:11:26,825 INFO L480 AbstractCegarLoop]: Abstraction has has 252 places, 644 transitions, 9589 flow [2021-03-12 00:11:26,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:26,825 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:26,825 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:26,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-12 00:11:26,826 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:26,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1559901072, now seen corresponding path program 17 times [2021-03-12 00:11:26,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:26,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090327453] [2021-03-12 00:11:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:26,845 INFO L142 QuantifierPusher]: treesize reduction 34, result has 41.4 percent of original size [2021-03-12 00:11:26,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-12 00:11:26,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:26,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:26,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:26,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:26,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:26,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:26,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:26,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:26,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:26,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:26,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:26,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:26,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:26,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:11:26,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-03-12 00:11:26,898 INFO L147 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size 9 [2021-03-12 00:11:26,910 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-03-12 00:11:26,911 INFO L147 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size 12 [2021-03-12 00:11:26,928 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-03-12 00:11:26,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:26,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:26,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:26,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090327453] [2021-03-12 00:11:26,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:26,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:11:26,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581731164] [2021-03-12 00:11:26,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:26,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:26,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:26,931 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:26,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 644 transitions, 9589 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:26,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:26,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:26,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:29,310 INFO L129 PetriNetUnfolder]: 3374/10188 cut-off events. [2021-03-12 00:11:29,310 INFO L130 PetriNetUnfolder]: For 164470/167224 co-relation queries the response was YES. [2021-03-12 00:11:29,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68373 conditions, 10188 events. 3374/10188 cut-off events. For 164470/167224 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 112628 event pairs, 961 based on Foata normal form. 379/10277 useless extension candidates. Maximal degree in co-relation 67438. Up to 5601 conditions per place. [2021-03-12 00:11:29,406 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 541 selfloop transitions, 108 changer transitions 31/767 dead transitions. [2021-03-12 00:11:29,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 767 transitions, 12835 flow [2021-03-12 00:11:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-12 00:11:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-12 00:11:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 592 transitions. [2021-03-12 00:11:29,407 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.671201814058957 [2021-03-12 00:11:29,407 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 592 transitions. [2021-03-12 00:11:29,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 592 transitions. [2021-03-12 00:11:29,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:29,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 592 transitions. [2021-03-12 00:11:29,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 42.285714285714285) internal successors, (592), 14 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:29,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:29,410 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:29,410 INFO L185 Difference]: Start difference. First operand has 252 places, 644 transitions, 9589 flow. Second operand 14 states and 592 transitions. [2021-03-12 00:11:29,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 767 transitions, 12835 flow [2021-03-12 00:11:30,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 767 transitions, 12559 flow, removed 138 selfloop flow, removed 0 redundant places. [2021-03-12 00:11:30,082 INFO L241 Difference]: Finished difference. Result has 274 places, 664 transitions, 10190 flow [2021-03-12 00:11:30,082 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9089, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10190, PETRI_PLACES=274, PETRI_TRANSITIONS=664} [2021-03-12 00:11:30,082 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 226 predicate places. [2021-03-12 00:11:30,082 INFO L480 AbstractCegarLoop]: Abstraction has has 274 places, 664 transitions, 10190 flow [2021-03-12 00:11:30,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:30,083 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:30,083 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:30,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-12 00:11:30,083 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:30,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1767154672, now seen corresponding path program 18 times [2021-03-12 00:11:30,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:30,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462159665] [2021-03-12 00:11:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:30,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:30,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:30,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:30,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:30,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:30,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:30,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:30,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:30,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:30,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:30,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:30,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:30,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-12 00:11:30,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:30,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462159665] [2021-03-12 00:11:30,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:30,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:11:30,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630980647] [2021-03-12 00:11:30,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:11:30,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:30,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:11:30,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:11:30,144 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 63 [2021-03-12 00:11:30,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 664 transitions, 10190 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:30,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:30,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 63 [2021-03-12 00:11:30,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:30,748 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([155] L51-->thread2EXIT: Formula: (= v_n2_80 0) InVars {} OutVars{n2=v_n2_80} AuxVars[] AssignedVars[n2][408], [Black: 258#(and (<= 1 i2) (<= i3 0) (<= 2 i1) (< 2 i) (<= i 3) (<= i2 1) (<= i1 2) (<= 0 i3)), Black: 252#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), 7#L30true, 9#L62true, 267#(and (<= 0 n3) (<= 0 n2)), Black: 272#(and (<= 0 n1) (<= n2 n3) (<= (+ n1 1) n2)), Black: 273#(and (<= n2 n3) (<= 1 n2)), Black: 275#(and (<= n1 n3) (<= 0 n1) (<= (+ n1 1) n2)), Black: 277#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= (+ n1 1) n2)), Black: 279#(and (<= n1 n2) (<= 0 n1) (<= n2 n3) (<= 1 n2)), Black: 268#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 269#(and (<= n1 n2) (<= 0 n1) (<= 0 n3)), 32#L77true, Black: 270#(and (<= 0 n1) (<= 0 n3) (<= (+ n1 1) n2)), Black: 271#(and (<= 1 n3) (<= 0 n1) (<= (+ n1 1) n2)), 290#true, 40#thread2EXITtrue, Black: 294#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 299#(and (<= n1 n2) (<= 0 n2) (<= (+ n2 1) n3)), Black: 301#(and (<= n1 n3) (= n3 n2) (not (= n2 0)) (<= 0 n2)), Black: 303#(and (= n3 n2) (not (= n2 0)) (<= 0 n2)), 313#(and (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 311#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 312#(and (= n3 n2) (<= 0 n2) (<= n2 0)), Black: 314#(and (<= n2 1) (<= 0 n3) (<= 1 n2)), Black: 317#(and (<= n2 1) (<= n2 n3) (<= 1 n2)), 67#true, 336#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 340#(and (<= i2 0) (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= 0 i2)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 346#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), 95#true, Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), 366#(and (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 111#e2, Black: 116#e3, 119#true, Black: 357#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 358#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 362#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= n2 n3)), Black: 364#(and (<= 1 n1) (= n3 n2) (<= 0 n2)), Black: 368#(and (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 370#(and (<= 0 n1) (= n3 n2) (<= 0 n2)), Black: 372#(and (<= 1 n1) (<= n2 n3) (<= 1 n2)), Black: 374#(and (< n2 n1) (<= 0 n3) (<= 1 n2)), Black: 376#(and (<= 1 n1) (= n3 n2) (<= 1 n2)), Black: 378#(and (< n2 n1) (<= n2 n3) (<= 1 n2)), Black: 380#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= n2 n3)), Black: 382#(and (< n2 n1) (= n3 n2) (<= 1 n2)), Black: 131#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 121#(and (<= i 0) (<= 0 i)), Black: 122#(and (<= i1 0) (<= 0 i1)), 148#true, Black: 401#(and (<= n3 n2) (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 402#(and (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 403#(and (<= 1 n3) (<= 0 n2) (<= n2 0)), Black: 404#(and (<= 1 n3) (<= n2 1) (<= 1 n2)), Black: 409#(and (< n1 (+ n3 1)) (<= n2 1) (not (= n3 n1)) (<= n2 (+ n1 1)) (<= 1 n2)), 416#true, Black: 160#(and (<= n1 n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 150#(and (<= n1 n3) (<= n3 n2) (<= 0 n2)), Black: 151#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 152#(and (<= n3 n2) (<= 0 n2)), Black: 153#(and (<= 1 n2) (<= (+ n3 1) n2)), Black: 154#(and (= n3 n2) (<= 1 n2)), Black: 158#(and (<= n1 n3) (<= 1 n2) (<= (+ n3 1) n2)), Black: 432#(and (<= 1 n3) (<= n2 n3) (< n3 (+ n1 1))), Black: 434#(and (<= 1 n3) (<= n2 n1) (< n3 (+ n1 1))), Black: 418#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 419#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 436#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n2 n3)), Black: 421#(and (<= 0 n3) (<= n3 n1)), Black: 422#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 423#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 424#(and (<= n1 n3) (<= 1 n1) (< n3 (+ n1 1))), Black: 440#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 428#(and (<= n1 n3) (<= 1 n1) (<= n2 n1) (< n3 (+ n1 1))), Black: 430#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n1)), 454#true, Black: 196#(and (<= 1 i2) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), Black: 190#(and (<= 1 i2) (<= 2 i) (<= i 2) (<= i2 1) (<= i1 0) (<= 0 i1)), 203#true, Black: 466#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 0 n2)), Black: 468#(and (<= n1 n2) (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 470#(and (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 472#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 458#(and (<= n2 n3) (<= n2 n1) (<= 0 n2)), Black: 459#(and (<= n2 n1) (<= 0 n2)), Black: 224#(and (<= 1 n3) (<= n2 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 460#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 461#(and (< n2 (+ n1 1)) (<= 1 n2)), Black: 208#(and (<= 0 n1) (<= 0 n3) (<= n3 0)), Black: 209#(and (<= 1 n1) (<= 0 n3) (<= n3 0)), Black: 462#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 210#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 211#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 220#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (< n3 (+ n1 1))), Black: 205#(and (<= n1 n3) (<= 0 n1) (<= n2 n1) (<= n3 0)), Black: 222#(and (<= 1 n3) (or (and (not (= n3 n1)) (< n3 (+ n1 1))) (not (= n2 0))) (<= n2 n3)), Black: 206#(and (<= 0 n1) (<= 0 n3) (<= n2 n3) (<= n3 0)), 497#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1))]) [2021-03-12 00:11:30,749 INFO L384 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2021-03-12 00:11:30,749 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-12 00:11:30,749 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-12 00:11:30,749 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-12 00:11:30,815 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([155] L51-->thread2EXIT: Formula: (= v_n2_80 0) InVars {} OutVars{n2=v_n2_80} AuxVars[] AssignedVars[n2][408], [Black: 258#(and (<= 1 i2) (<= i3 0) (<= 2 i1) (< 2 i) (<= i 3) (<= i2 1) (<= i1 2) (<= 0 i3)), Black: 252#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), 7#L30true, 9#L62true, 267#(and (<= 0 n3) (<= 0 n2)), Black: 272#(and (<= 0 n1) (<= n2 n3) (<= (+ n1 1) n2)), Black: 273#(and (<= n2 n3) (<= 1 n2)), Black: 275#(and (<= n1 n3) (<= 0 n1) (<= (+ n1 1) n2)), Black: 277#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= (+ n1 1) n2)), Black: 279#(and (<= n1 n2) (<= 0 n1) (<= n2 n3) (<= 1 n2)), Black: 268#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 269#(and (<= n1 n2) (<= 0 n1) (<= 0 n3)), 32#L77true, Black: 270#(and (<= 0 n1) (<= 0 n3) (<= (+ n1 1) n2)), Black: 271#(and (<= 1 n3) (<= 0 n1) (<= (+ n1 1) n2)), 290#true, 40#thread2EXITtrue, Black: 294#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 299#(and (<= n1 n2) (<= 0 n2) (<= (+ n2 1) n3)), Black: 301#(and (<= n1 n3) (= n3 n2) (not (= n2 0)) (<= 0 n2)), Black: 303#(and (= n3 n2) (not (= n2 0)) (<= 0 n2)), 313#(and (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 311#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 312#(and (= n3 n2) (<= 0 n2) (<= n2 0)), Black: 314#(and (<= n2 1) (<= 0 n3) (<= 1 n2)), 67#true, Black: 317#(and (<= n2 1) (<= n2 n3) (<= 1 n2)), 336#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 340#(and (<= i2 0) (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= 0 i2)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 346#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), 95#true, Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), 366#(and (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 111#e2, Black: 116#e3, 119#true, Black: 357#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 358#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 362#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= n2 n3)), Black: 364#(and (<= 1 n1) (= n3 n2) (<= 0 n2)), Black: 368#(and (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 370#(and (<= 0 n1) (= n3 n2) (<= 0 n2)), Black: 372#(and (<= 1 n1) (<= n2 n3) (<= 1 n2)), Black: 374#(and (< n2 n1) (<= 0 n3) (<= 1 n2)), Black: 376#(and (<= 1 n1) (= n3 n2) (<= 1 n2)), Black: 378#(and (< n2 n1) (<= n2 n3) (<= 1 n2)), Black: 380#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= n2 n3)), Black: 382#(and (< n2 n1) (= n3 n2) (<= 1 n2)), Black: 131#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 121#(and (<= i 0) (<= 0 i)), Black: 122#(and (<= i1 0) (<= 0 i1)), 148#true, Black: 401#(and (<= n3 n2) (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 402#(and (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 403#(and (<= 1 n3) (<= 0 n2) (<= n2 0)), Black: 404#(and (<= 1 n3) (<= n2 1) (<= 1 n2)), Black: 409#(and (< n1 (+ n3 1)) (<= n2 1) (not (= n3 n1)) (<= n2 (+ n1 1)) (<= 1 n2)), 416#true, Black: 160#(and (<= n1 n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 150#(and (<= n1 n3) (<= n3 n2) (<= 0 n2)), Black: 151#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 152#(and (<= n3 n2) (<= 0 n2)), Black: 153#(and (<= 1 n2) (<= (+ n3 1) n2)), Black: 154#(and (= n3 n2) (<= 1 n2)), Black: 158#(and (<= n1 n3) (<= 1 n2) (<= (+ n3 1) n2)), Black: 432#(and (<= 1 n3) (<= n2 n3) (< n3 (+ n1 1))), Black: 434#(and (<= 1 n3) (<= n2 n1) (< n3 (+ n1 1))), Black: 418#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 419#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 436#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n2 n3)), Black: 421#(and (<= 0 n3) (<= n3 n1)), Black: 422#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 423#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 424#(and (<= n1 n3) (<= 1 n1) (< n3 (+ n1 1))), Black: 440#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 428#(and (<= n1 n3) (<= 1 n1) (<= n2 n1) (< n3 (+ n1 1))), Black: 430#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n1)), 454#true, Black: 196#(and (<= 1 i2) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), Black: 190#(and (<= 1 i2) (<= 2 i) (<= i 2) (<= i2 1) (<= i1 0) (<= 0 i1)), 203#true, Black: 466#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 0 n2)), Black: 468#(and (<= n1 n2) (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 470#(and (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 472#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 458#(and (<= n2 n3) (<= n2 n1) (<= 0 n2)), Black: 459#(and (<= n2 n1) (<= 0 n2)), Black: 224#(and (<= 1 n3) (<= n2 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 460#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 461#(and (< n2 (+ n1 1)) (<= 1 n2)), Black: 208#(and (<= 0 n1) (<= 0 n3) (<= n3 0)), Black: 209#(and (<= 1 n1) (<= 0 n3) (<= n3 0)), Black: 462#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 210#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 211#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 220#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (< n3 (+ n1 1))), Black: 205#(and (<= n1 n3) (<= 0 n1) (<= n2 n1) (<= n3 0)), Black: 222#(and (<= 1 n3) (or (and (not (= n3 n1)) (< n3 (+ n1 1))) (not (= n2 0))) (<= n2 n3)), Black: 206#(and (<= 0 n1) (<= 0 n3) (<= n2 n3) (<= n3 0)), 497#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1))]) [2021-03-12 00:11:30,815 INFO L384 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2021-03-12 00:11:30,815 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-12 00:11:30,815 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-12 00:11:30,815 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-12 00:11:30,815 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-12 00:11:32,108 INFO L129 PetriNetUnfolder]: 2366/8577 cut-off events. [2021-03-12 00:11:32,108 INFO L130 PetriNetUnfolder]: For 120074/122294 co-relation queries the response was YES. [2021-03-12 00:11:32,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53513 conditions, 8577 events. 2366/8577 cut-off events. For 120074/122294 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 99454 event pairs, 583 based on Foata normal form. 478/8591 useless extension candidates. Maximal degree in co-relation 52481. Up to 2100 conditions per place. [2021-03-12 00:11:32,200 INFO L132 encePairwiseOnDemand]: 55/63 looper letters, 48 selfloop transitions, 41 changer transitions 15/679 dead transitions. [2021-03-12 00:11:32,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 679 transitions, 10484 flow [2021-03-12 00:11:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:11:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:11:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2021-03-12 00:11:32,202 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8975468975468975 [2021-03-12 00:11:32,202 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2021-03-12 00:11:32,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2021-03-12 00:11:32,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:32,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2021-03-12 00:11:32,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:32,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:32,204 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:32,204 INFO L185 Difference]: Start difference. First operand has 274 places, 664 transitions, 10190 flow. Second operand 11 states and 622 transitions. [2021-03-12 00:11:32,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 679 transitions, 10484 flow [2021-03-12 00:11:32,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 679 transitions, 10357 flow, removed 57 selfloop flow, removed 2 redundant places. [2021-03-12 00:11:32,937 INFO L241 Difference]: Finished difference. Result has 283 places, 651 transitions, 9905 flow [2021-03-12 00:11:32,938 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10063, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9905, PETRI_PLACES=283, PETRI_TRANSITIONS=651} [2021-03-12 00:11:32,938 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 235 predicate places. [2021-03-12 00:11:32,938 INFO L480 AbstractCegarLoop]: Abstraction has has 283 places, 651 transitions, 9905 flow [2021-03-12 00:11:32,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:32,938 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:32,938 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:32,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-12 00:11:32,938 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:32,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:32,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1713476398, now seen corresponding path program 19 times [2021-03-12 00:11:32,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:32,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119079913] [2021-03-12 00:11:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:32,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:32,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:32,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:32,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:11:32,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:32,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:32,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:32,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:32,976 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-03-12 00:11:32,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:11:32,981 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:11:32,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:32,989 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-12 00:11:32,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:32,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:32,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:32,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119079913] [2021-03-12 00:11:32,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:32,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:11:32,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687477031] [2021-03-12 00:11:32,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:11:32,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:33,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:11:33,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:11:33,000 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 63 [2021-03-12 00:11:33,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 651 transitions, 9905 flow. Second operand has 8 states, 8 states have (on average 40.125) internal successors, (321), 8 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:33,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:33,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 63 [2021-03-12 00:11:33,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:35,234 INFO L129 PetriNetUnfolder]: 3396/10386 cut-off events. [2021-03-12 00:11:35,235 INFO L130 PetriNetUnfolder]: For 177582/179824 co-relation queries the response was YES. [2021-03-12 00:11:35,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70527 conditions, 10386 events. 3396/10386 cut-off events. For 177582/179824 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 115459 event pairs, 605 based on Foata normal form. 482/10591 useless extension candidates. Maximal degree in co-relation 69604. Up to 2321 conditions per place. [2021-03-12 00:11:35,549 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 262 selfloop transitions, 210 changer transitions 48/763 dead transitions. [2021-03-12 00:11:35,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 763 transitions, 12652 flow [2021-03-12 00:11:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:11:35,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:11:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 369 transitions. [2021-03-12 00:11:35,550 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7321428571428571 [2021-03-12 00:11:35,551 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 369 transitions. [2021-03-12 00:11:35,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 369 transitions. [2021-03-12 00:11:35,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:35,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 369 transitions. [2021-03-12 00:11:35,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:35,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:35,552 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:35,552 INFO L185 Difference]: Start difference. First operand has 283 places, 651 transitions, 9905 flow. Second operand 8 states and 369 transitions. [2021-03-12 00:11:35,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 763 transitions, 12652 flow [2021-03-12 00:11:36,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 763 transitions, 12438 flow, removed 42 selfloop flow, removed 13 redundant places. [2021-03-12 00:11:36,320 INFO L241 Difference]: Finished difference. Result has 281 places, 656 transitions, 10612 flow [2021-03-12 00:11:36,320 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9612, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10612, PETRI_PLACES=281, PETRI_TRANSITIONS=656} [2021-03-12 00:11:36,320 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 233 predicate places. [2021-03-12 00:11:36,320 INFO L480 AbstractCegarLoop]: Abstraction has has 281 places, 656 transitions, 10612 flow [2021-03-12 00:11:36,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 40.125) internal successors, (321), 8 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:36,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:36,321 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:36,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-12 00:11:36,321 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:36,321 INFO L82 PathProgramCache]: Analyzing trace with hash 74403180, now seen corresponding path program 20 times [2021-03-12 00:11:36,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:36,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973244605] [2021-03-12 00:11:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:36,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:36,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:36,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:36,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:36,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:36,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:36,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973244605] [2021-03-12 00:11:36,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:36,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:11:36,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316950822] [2021-03-12 00:11:36,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:11:36,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:36,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:11:36,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:11:36,331 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-03-12 00:11:36,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 656 transitions, 10612 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:36,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:36,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-03-12 00:11:36,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:37,139 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([132] L63-->L64: Formula: (or (= v_n1_14 0) (and (not (= v_n1_14 v_n3_12)) (not (< v_n1_14 v_n3_12)))) InVars {n3=v_n3_12, n1=v_n1_14} OutVars{n3=v_n3_12, n1=v_n1_14} AuxVars[] AssignedVars[][59], [519#(and (<= n1 n3) (<= 0 n1)), 10#thread1EXITtrue, Black: 514#(and (<= 0 n1) (<= 0 n3)), 268#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 515#(and (<= 1 n1) (<= 0 n3)), Black: 516#(and (<= 1 n3) (<= 1 n1)), Black: 517#(and (<= 1 n3) (< n3 n1)), Black: 521#(and (<= n1 n3) (<= 1 n1)), 529#true, 18#L47true, Black: 272#(and (<= 0 n1) (<= n2 n3) (<= (+ n1 1) n2)), Black: 273#(and (<= n2 n3) (<= 1 n2)), Black: 275#(and (<= n1 n3) (<= 0 n1) (<= (+ n1 1) n2)), Black: 277#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= (+ n1 1) n2)), Black: 279#(and (<= n1 n2) (<= 0 n1) (<= n2 n3) (<= 1 n2)), Black: 269#(and (<= n1 n2) (<= 0 n1) (<= 0 n3)), 32#L77true, Black: 270#(and (<= 0 n1) (<= 0 n3) (<= (+ n1 1) n2)), Black: 271#(and (<= 1 n3) (<= 0 n1) (<= (+ n1 1) n2)), 290#true, 38#L64true, Black: 294#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 299#(and (<= n1 n2) (<= 0 n2) (<= (+ n2 1) n3)), Black: 301#(and (<= n1 n3) (= n3 n2) (not (= n2 0)) (<= 0 n2)), Black: 303#(and (= n3 n2) (not (= n2 0)) (<= 0 n2)), 317#(and (<= n2 1) (<= n2 n3) (<= 1 n2)), Black: 311#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 312#(and (= n3 n2) (<= 0 n2) (<= n2 0)), Black: 313#(and (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 314#(and (<= n2 1) (<= 0 n3) (<= 1 n2)), 67#true, Black: 346#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), 95#true, 357#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), Black: 111#e2, Black: 116#e3, Black: 358#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 362#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= n2 n3)), 131#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 364#(and (<= 1 n1) (= n3 n2) (<= 0 n2)), Black: 366#(and (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 368#(and (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 370#(and (<= 0 n1) (= n3 n2) (<= 0 n2)), Black: 372#(and (<= 1 n1) (<= n2 n3) (<= 1 n2)), Black: 374#(and (< n2 n1) (<= 0 n3) (<= 1 n2)), Black: 376#(and (<= 1 n1) (= n3 n2) (<= 1 n2)), Black: 378#(and (< n2 n1) (<= n2 n3) (<= 1 n2)), Black: 380#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= n2 n3)), Black: 382#(and (< n2 n1) (= n3 n2) (<= 1 n2)), 151#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 401#(and (<= n3 n2) (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 402#(and (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 403#(and (<= 1 n3) (<= 0 n2) (<= n2 0)), Black: 404#(and (<= 1 n3) (<= n2 1) (<= 1 n2)), Black: 409#(and (< n1 (+ n3 1)) (<= n2 1) (not (= n3 n1)) (<= n2 (+ n1 1)) (<= 1 n2)), 416#true, Black: 160#(and (<= n1 n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 150#(and (<= n1 n3) (<= n3 n2) (<= 0 n2)), Black: 152#(and (<= n3 n2) (<= 0 n2)), Black: 153#(and (<= 1 n2) (<= (+ n3 1) n2)), Black: 154#(and (= n3 n2) (<= 1 n2)), Black: 158#(and (<= n1 n3) (<= 1 n2) (<= (+ n3 1) n2)), 186#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 432#(and (<= 1 n3) (<= n2 n3) (< n3 (+ n1 1))), Black: 434#(and (<= 1 n3) (<= n2 n1) (< n3 (+ n1 1))), Black: 418#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 419#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 436#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n2 n3)), Black: 421#(and (<= 0 n3) (<= n3 n1)), Black: 422#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 423#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 424#(and (<= n1 n3) (<= 1 n1) (< n3 (+ n1 1))), Black: 440#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 428#(and (<= n1 n3) (<= 1 n1) (<= n2 n1) (< n3 (+ n1 1))), Black: 430#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n1)), 454#true, Black: 196#(and (<= 1 i2) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), 203#true, Black: 466#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 0 n2)), Black: 468#(and (<= n1 n2) (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 470#(and (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 472#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 458#(and (<= n2 n3) (<= n2 n1) (<= 0 n2)), Black: 459#(and (<= n2 n1) (<= 0 n2)), Black: 460#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 208#(and (<= 0 n1) (<= 0 n3) (<= n3 0)), Black: 461#(and (< n2 (+ n1 1)) (<= 1 n2)), Black: 209#(and (<= 1 n1) (<= 0 n3) (<= n3 0)), Black: 462#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 210#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 211#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 220#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (< n3 (+ n1 1))), Black: 205#(and (<= n1 n3) (<= 0 n1) (<= n2 n1) (<= n3 0)), Black: 222#(and (<= 1 n3) (or (and (not (= n3 n1)) (< n3 (+ n1 1))) (not (= n2 0))) (<= n2 n3)), Black: 206#(and (<= 0 n1) (<= 0 n3) (<= n2 n3) (<= n3 0)), Black: 507#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1))]) [2021-03-12 00:11:37,140 INFO L384 tUnfolder$Statistics]: this new event has 24 ancestors and is not cut-off event [2021-03-12 00:11:37,140 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is not cut-off event [2021-03-12 00:11:37,140 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is not cut-off event [2021-03-12 00:11:37,140 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is not cut-off event [2021-03-12 00:11:37,213 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([134] L65-->L66: Formula: (or (= v_n2_14 0) (and (not (< v_n2_14 v_n3_13)) (not (= v_n2_14 v_n3_13)))) InVars {n2=v_n2_14, n3=v_n3_13} OutVars{n2=v_n2_14, n3=v_n3_13} AuxVars[] AssignedVars[][140], [515#(and (<= 1 n1) (<= 0 n3)), 7#L30true, Black: 514#(and (<= 0 n1) (<= 0 n3)), 267#(and (<= 0 n3) (<= 0 n2)), Black: 516#(and (<= 1 n3) (<= 1 n1)), Black: 517#(and (<= 1 n3) (< n3 n1)), Black: 519#(and (<= n1 n3) (<= 0 n1)), Black: 521#(and (<= n1 n3) (<= 1 n1)), 17#L66true, 529#true, Black: 272#(and (<= 0 n1) (<= n2 n3) (<= (+ n1 1) n2)), Black: 273#(and (<= n2 n3) (<= 1 n2)), Black: 275#(and (<= n1 n3) (<= 0 n1) (<= (+ n1 1) n2)), Black: 277#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= (+ n1 1) n2)), Black: 279#(and (<= n1 n2) (<= 0 n1) (<= n2 n3) (<= 1 n2)), Black: 268#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 269#(and (<= n1 n2) (<= 0 n1) (<= 0 n3)), 32#L77true, Black: 270#(and (<= 0 n1) (<= 0 n3) (<= (+ n1 1) n2)), Black: 271#(and (<= 1 n3) (<= 0 n1) (<= (+ n1 1) n2)), 290#true, 40#thread2EXITtrue, Black: 294#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 299#(and (<= n1 n2) (<= 0 n2) (<= (+ n2 1) n3)), Black: 301#(and (<= n1 n3) (= n3 n2) (not (= n2 0)) (<= 0 n2)), Black: 303#(and (= n3 n2) (not (= n2 0)) (<= 0 n2)), 313#(and (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 311#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 312#(and (= n3 n2) (<= 0 n2) (<= n2 0)), Black: 314#(and (<= n2 1) (<= 0 n3) (<= 1 n2)), Black: 317#(and (<= n2 1) (<= n2 n3) (<= 1 n2)), 67#true, 336#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1)), Black: 346#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), 95#true, Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), 366#(and (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 111#e2, Black: 116#e3, 119#true, Black: 357#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 358#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 362#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= n2 n3)), Black: 364#(and (<= 1 n1) (= n3 n2) (<= 0 n2)), Black: 368#(and (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 370#(and (<= 0 n1) (= n3 n2) (<= 0 n2)), Black: 372#(and (<= 1 n1) (<= n2 n3) (<= 1 n2)), Black: 374#(and (< n2 n1) (<= 0 n3) (<= 1 n2)), Black: 376#(and (<= 1 n1) (= n3 n2) (<= 1 n2)), Black: 378#(and (< n2 n1) (<= n2 n3) (<= 1 n2)), Black: 380#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= n2 n3)), Black: 382#(and (< n2 n1) (= n3 n2) (<= 1 n2)), 148#true, Black: 401#(and (<= n3 n2) (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 402#(and (<= n2 n3) (<= 0 n2) (<= n2 0)), Black: 403#(and (<= 1 n3) (<= 0 n2) (<= n2 0)), Black: 404#(and (<= 1 n3) (<= n2 1) (<= 1 n2)), Black: 409#(and (< n1 (+ n3 1)) (<= n2 1) (not (= n3 n1)) (<= n2 (+ n1 1)) (<= 1 n2)), 416#true, Black: 160#(and (<= n1 n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 150#(and (<= n1 n3) (<= n3 n2) (<= 0 n2)), Black: 151#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 152#(and (<= n3 n2) (<= 0 n2)), Black: 153#(and (<= 1 n2) (<= (+ n3 1) n2)), Black: 154#(and (= n3 n2) (<= 1 n2)), Black: 158#(and (<= n1 n3) (<= 1 n2) (<= (+ n3 1) n2)), Black: 432#(and (<= 1 n3) (<= n2 n3) (< n3 (+ n1 1))), Black: 434#(and (<= 1 n3) (<= n2 n1) (< n3 (+ n1 1))), Black: 418#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 419#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 436#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n2 n3)), Black: 421#(and (<= 0 n3) (<= n3 n1)), Black: 422#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 423#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 424#(and (<= n1 n3) (<= 1 n1) (< n3 (+ n1 1))), Black: 440#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 428#(and (<= n1 n3) (<= 1 n1) (<= n2 n1) (< n3 (+ n1 1))), Black: 430#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n1)), 454#true, Black: 196#(and (<= 1 i2) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= i2 1) (<= i1 0) (<= 0 i1)), 203#true, Black: 466#(and (<= (+ n2 1) n1) (<= n2 n3) (<= 0 n2)), Black: 468#(and (<= n1 n2) (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 470#(and (<= n2 n3) (< n2 (+ n1 1)) (<= 1 n2)), Black: 472#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 458#(and (<= n2 n3) (<= n2 n1) (<= 0 n2)), Black: 459#(and (<= n2 n1) (<= 0 n2)), Black: 460#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 208#(and (<= 0 n1) (<= 0 n3) (<= n3 0)), Black: 461#(and (< n2 (+ n1 1)) (<= 1 n2)), Black: 209#(and (<= 1 n1) (<= 0 n3) (<= n3 0)), Black: 462#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 210#(and (<= 1 n3) (< n3 (+ n1 1))), Black: 211#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 220#(and (<= 1 n3) (or (not (= n3 n1)) (not (= n2 0))) (< n3 (+ n1 1))), Black: 205#(and (<= n1 n3) (<= 0 n1) (<= n2 n1) (<= n3 0)), Black: 222#(and (<= 1 n3) (or (and (not (= n3 n1)) (< n3 (+ n1 1))) (not (= n2 0))) (<= n2 n3)), Black: 206#(and (<= 0 n1) (<= 0 n3) (<= n2 n3) (<= n3 0)), 497#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1)), Black: 507#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1))]) [2021-03-12 00:11:37,213 INFO L384 tUnfolder$Statistics]: this new event has 26 ancestors and is cut-off event [2021-03-12 00:11:37,213 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-12 00:11:37,213 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-12 00:11:37,213 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-12 00:11:37,740 INFO L129 PetriNetUnfolder]: 2422/9218 cut-off events. [2021-03-12 00:11:37,740 INFO L130 PetriNetUnfolder]: For 154928/157479 co-relation queries the response was YES. [2021-03-12 00:11:37,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57659 conditions, 9218 events. 2422/9218 cut-off events. For 154928/157479 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 110399 event pairs, 749 based on Foata normal form. 468/9142 useless extension candidates. Maximal degree in co-relation 57134. Up to 2241 conditions per place. [2021-03-12 00:11:38,027 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 3 selfloop transitions, 51 changer transitions 0/626 dead transitions. [2021-03-12 00:11:38,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 626 transitions, 10195 flow [2021-03-12 00:11:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:11:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:11:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2021-03-12 00:11:38,028 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.91005291005291 [2021-03-12 00:11:38,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2021-03-12 00:11:38,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2021-03-12 00:11:38,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:38,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2021-03-12 00:11:38,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:38,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:38,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:38,029 INFO L185 Difference]: Start difference. First operand has 281 places, 656 transitions, 10612 flow. Second operand 3 states and 172 transitions. [2021-03-12 00:11:38,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 626 transitions, 10195 flow [2021-03-12 00:11:38,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 626 transitions, 10106 flow, removed 42 selfloop flow, removed 4 redundant places. [2021-03-12 00:11:38,722 INFO L241 Difference]: Finished difference. Result has 278 places, 626 transitions, 10155 flow [2021-03-12 00:11:38,723 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9998, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10155, PETRI_PLACES=278, PETRI_TRANSITIONS=626} [2021-03-12 00:11:38,723 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 230 predicate places. [2021-03-12 00:11:38,723 INFO L480 AbstractCegarLoop]: Abstraction has has 278 places, 626 transitions, 10155 flow [2021-03-12 00:11:38,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:38,723 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:38,723 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:38,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-12 00:11:38,723 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:38,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:38,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1395829298, now seen corresponding path program 21 times [2021-03-12 00:11:38,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:38,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298644049] [2021-03-12 00:11:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:38,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:38,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:38,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:38,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:38,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:38,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:38,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:38,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:38,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:38,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:11:38,766 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:11:38,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:38,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:38,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:11:38,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:38,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:38,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298644049] [2021-03-12 00:11:38,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:38,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:11:38,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044320640] [2021-03-12 00:11:38,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:11:38,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:38,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:11:38,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:11:38,794 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:38,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 626 transitions, 10155 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:38,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:38,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:38,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:41,505 INFO L129 PetriNetUnfolder]: 3901/12295 cut-off events. [2021-03-12 00:11:41,505 INFO L130 PetriNetUnfolder]: For 249429/252567 co-relation queries the response was YES. [2021-03-12 00:11:41,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86564 conditions, 12295 events. 3901/12295 cut-off events. For 249429/252567 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 142654 event pairs, 1433 based on Foata normal form. 383/12156 useless extension candidates. Maximal degree in co-relation 85372. Up to 6128 conditions per place. [2021-03-12 00:11:41,640 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 588 selfloop transitions, 101 changer transitions 4/780 dead transitions. [2021-03-12 00:11:41,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 780 transitions, 14370 flow [2021-03-12 00:11:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:11:41,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:11:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 394 transitions. [2021-03-12 00:11:41,641 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6948853615520282 [2021-03-12 00:11:41,641 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 394 transitions. [2021-03-12 00:11:41,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 394 transitions. [2021-03-12 00:11:41,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:41,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 394 transitions. [2021-03-12 00:11:41,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.77777777777778) internal successors, (394), 9 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:41,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:41,642 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:41,642 INFO L185 Difference]: Start difference. First operand has 278 places, 626 transitions, 10155 flow. Second operand 9 states and 394 transitions. [2021-03-12 00:11:41,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 780 transitions, 14370 flow [2021-03-12 00:11:42,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 780 transitions, 14222 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:11:42,715 INFO L241 Difference]: Finished difference. Result has 291 places, 680 transitions, 11536 flow [2021-03-12 00:11:42,715 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10035, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11536, PETRI_PLACES=291, PETRI_TRANSITIONS=680} [2021-03-12 00:11:42,715 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 243 predicate places. [2021-03-12 00:11:42,715 INFO L480 AbstractCegarLoop]: Abstraction has has 291 places, 680 transitions, 11536 flow [2021-03-12 00:11:42,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:42,716 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:42,716 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:42,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-12 00:11:42,716 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:42,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:42,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1173595936, now seen corresponding path program 22 times [2021-03-12 00:11:42,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:42,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560815677] [2021-03-12 00:11:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:42,738 INFO L142 QuantifierPusher]: treesize reduction 26, result has 50.0 percent of original size [2021-03-12 00:11:42,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-12 00:11:42,755 INFO L142 QuantifierPusher]: treesize reduction 26, result has 46.9 percent of original size [2021-03-12 00:11:42,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-12 00:11:42,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:42,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:42,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:42,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:42,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:42,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:42,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:42,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:42,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:42,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:42,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:42,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:11:42,784 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-12 00:11:42,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:42,793 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-12 00:11:42,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:42,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:42,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:42,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560815677] [2021-03-12 00:11:42,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:42,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:11:42,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562684798] [2021-03-12 00:11:42,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:11:42,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:42,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:11:42,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:11:42,795 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:42,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 680 transitions, 11536 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:42,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:42,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:42,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:45,682 INFO L129 PetriNetUnfolder]: 3927/12237 cut-off events. [2021-03-12 00:11:45,682 INFO L130 PetriNetUnfolder]: For 259758/263123 co-relation queries the response was YES. [2021-03-12 00:11:45,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88543 conditions, 12237 events. 3927/12237 cut-off events. For 259758/263123 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 141233 event pairs, 1488 based on Foata normal form. 365/12073 useless extension candidates. Maximal degree in co-relation 87355. Up to 6893 conditions per place. [2021-03-12 00:11:45,813 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 563 selfloop transitions, 74 changer transitions 9/733 dead transitions. [2021-03-12 00:11:45,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 733 transitions, 13803 flow [2021-03-12 00:11:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:11:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:11:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 264 transitions. [2021-03-12 00:11:45,814 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2021-03-12 00:11:45,814 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 264 transitions. [2021-03-12 00:11:45,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 264 transitions. [2021-03-12 00:11:45,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:45,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 264 transitions. [2021-03-12 00:11:45,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:45,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:45,815 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:45,815 INFO L185 Difference]: Start difference. First operand has 291 places, 680 transitions, 11536 flow. Second operand 6 states and 264 transitions. [2021-03-12 00:11:45,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 733 transitions, 13803 flow [2021-03-12 00:11:46,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 733 transitions, 13740 flow, removed 21 selfloop flow, removed 1 redundant places. [2021-03-12 00:11:46,764 INFO L241 Difference]: Finished difference. Result has 298 places, 688 transitions, 11892 flow [2021-03-12 00:11:46,765 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11479, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11892, PETRI_PLACES=298, PETRI_TRANSITIONS=688} [2021-03-12 00:11:46,765 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 250 predicate places. [2021-03-12 00:11:46,765 INFO L480 AbstractCegarLoop]: Abstraction has has 298 places, 688 transitions, 11892 flow [2021-03-12 00:11:46,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:46,765 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:46,765 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:46,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-12 00:11:46,765 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash 259674016, now seen corresponding path program 23 times [2021-03-12 00:11:46,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:46,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53004716] [2021-03-12 00:11:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:46,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:46,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:46,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:46,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:46,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:46,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:46,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:46,822 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:11:46,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:46,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:46,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:46,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:46,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:46,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53004716] [2021-03-12 00:11:46,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:46,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:11:46,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127518717] [2021-03-12 00:11:46,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:11:46,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:46,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:11:46,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:11:46,851 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:46,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 688 transitions, 11892 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:46,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:46,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:46,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:50,181 INFO L129 PetriNetUnfolder]: 3970/12498 cut-off events. [2021-03-12 00:11:50,182 INFO L130 PetriNetUnfolder]: For 272323/276727 co-relation queries the response was YES. [2021-03-12 00:11:50,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90902 conditions, 12498 events. 3970/12498 cut-off events. For 272323/276727 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 145858 event pairs, 1469 based on Foata normal form. 679/12642 useless extension candidates. Maximal degree in co-relation 89710. Up to 6092 conditions per place. [2021-03-12 00:11:50,342 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 497 selfloop transitions, 207 changer transitions 28/819 dead transitions. [2021-03-12 00:11:50,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 819 transitions, 15753 flow [2021-03-12 00:11:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-12 00:11:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-12 00:11:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 676 transitions. [2021-03-12 00:11:50,343 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2021-03-12 00:11:50,344 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 676 transitions. [2021-03-12 00:11:50,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 676 transitions. [2021-03-12 00:11:50,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:50,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 676 transitions. [2021-03-12 00:11:50,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 42.25) internal successors, (676), 16 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:50,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:50,346 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 63.0) internal successors, (1071), 17 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:50,346 INFO L185 Difference]: Start difference. First operand has 298 places, 688 transitions, 11892 flow. Second operand 16 states and 676 transitions. [2021-03-12 00:11:50,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 819 transitions, 15753 flow [2021-03-12 00:11:51,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 819 transitions, 15586 flow, removed 45 selfloop flow, removed 3 redundant places. [2021-03-12 00:11:51,492 INFO L241 Difference]: Finished difference. Result has 318 places, 715 transitions, 13146 flow [2021-03-12 00:11:51,492 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11698, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13146, PETRI_PLACES=318, PETRI_TRANSITIONS=715} [2021-03-12 00:11:51,492 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 270 predicate places. [2021-03-12 00:11:51,492 INFO L480 AbstractCegarLoop]: Abstraction has has 318 places, 715 transitions, 13146 flow [2021-03-12 00:11:51,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:51,493 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:51,493 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:51,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-12 00:11:51,493 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:51,493 INFO L82 PathProgramCache]: Analyzing trace with hash -797429566, now seen corresponding path program 24 times [2021-03-12 00:11:51,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:51,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943100589] [2021-03-12 00:11:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:51,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:51,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:11:51,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:51,543 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-03-12 00:11:51,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-12 00:11:51,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:11:51,572 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-12 00:11:51,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:51,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:11:51,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:51,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:51,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:51,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:51,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:51,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943100589] [2021-03-12 00:11:51,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:51,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-12 00:11:51,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468147443] [2021-03-12 00:11:51,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 00:11:51,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:51,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 00:11:51,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-03-12 00:11:51,623 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:51,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 715 transitions, 13146 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:51,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:51,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:51,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:11:55,345 INFO L129 PetriNetUnfolder]: 3994/12479 cut-off events. [2021-03-12 00:11:55,345 INFO L130 PetriNetUnfolder]: For 280141/284058 co-relation queries the response was YES. [2021-03-12 00:11:55,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92391 conditions, 12479 events. 3994/12479 cut-off events. For 280141/284058 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 144904 event pairs, 1615 based on Foata normal form. 421/12354 useless extension candidates. Maximal degree in co-relation 91702. Up to 6134 conditions per place. [2021-03-12 00:11:55,482 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 479 selfloop transitions, 260 changer transitions 2/828 dead transitions. [2021-03-12 00:11:55,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 828 transitions, 16743 flow [2021-03-12 00:11:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-12 00:11:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-12 00:11:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 793 transitions. [2021-03-12 00:11:55,484 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6624895572263994 [2021-03-12 00:11:55,484 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 793 transitions. [2021-03-12 00:11:55,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 793 transitions. [2021-03-12 00:11:55,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:11:55,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 793 transitions. [2021-03-12 00:11:55,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 41.73684210526316) internal successors, (793), 19 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:55,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:55,487 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:55,487 INFO L185 Difference]: Start difference. First operand has 318 places, 715 transitions, 13146 flow. Second operand 19 states and 793 transitions. [2021-03-12 00:11:55,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 828 transitions, 16743 flow [2021-03-12 00:11:56,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 828 transitions, 16481 flow, removed 129 selfloop flow, removed 2 redundant places. [2021-03-12 00:11:56,615 INFO L241 Difference]: Finished difference. Result has 339 places, 746 transitions, 14485 flow [2021-03-12 00:11:56,615 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12789, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14485, PETRI_PLACES=339, PETRI_TRANSITIONS=746} [2021-03-12 00:11:56,615 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 291 predicate places. [2021-03-12 00:11:56,615 INFO L480 AbstractCegarLoop]: Abstraction has has 339 places, 746 transitions, 14485 flow [2021-03-12 00:11:56,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:56,616 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:11:56,616 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:11:56,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-12 00:11:56,616 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:11:56,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:11:56,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1979864374, now seen corresponding path program 25 times [2021-03-12 00:11:56,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:11:56,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693977039] [2021-03-12 00:11:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:11:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:11:56,645 INFO L142 QuantifierPusher]: treesize reduction 24, result has 53.8 percent of original size [2021-03-12 00:11:56,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-12 00:11:56,669 INFO L142 QuantifierPusher]: treesize reduction 30, result has 38.8 percent of original size [2021-03-12 00:11:56,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:11:56,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:56,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:11:56,689 INFO L142 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-03-12 00:11:56,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-12 00:11:56,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:56,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:11:56,708 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-12 00:11:56,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:11:56,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:56,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:56,732 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:11:56,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:56,733 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:11:56,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:56,742 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:11:56,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:11:56,752 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:11:56,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:11:56,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:11:56,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:11:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:11:56,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693977039] [2021-03-12 00:11:56,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:11:56,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:11:56,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109000724] [2021-03-12 00:11:56,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:11:56,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:11:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:11:56,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:11:56,771 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:11:56,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 746 transitions, 14485 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:11:56,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:11:56,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:11:56,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:12:00,438 INFO L129 PetriNetUnfolder]: 4149/13085 cut-off events. [2021-03-12 00:12:00,438 INFO L130 PetriNetUnfolder]: For 297228/300250 co-relation queries the response was YES. [2021-03-12 00:12:00,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97005 conditions, 13085 events. 4149/13085 cut-off events. For 297228/300250 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 153946 event pairs, 1440 based on Foata normal form. 365/12947 useless extension candidates. Maximal degree in co-relation 95785. Up to 5040 conditions per place. [2021-03-12 00:12:00,585 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 607 selfloop transitions, 184 changer transitions 0/878 dead transitions. [2021-03-12 00:12:00,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 878 transitions, 18714 flow [2021-03-12 00:12:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:12:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:12:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 438 transitions. [2021-03-12 00:12:00,587 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2021-03-12 00:12:00,587 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 438 transitions. [2021-03-12 00:12:00,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 438 transitions. [2021-03-12 00:12:00,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:12:00,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 438 transitions. [2021-03-12 00:12:00,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.8) internal successors, (438), 10 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:00,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:00,589 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:00,589 INFO L185 Difference]: Start difference. First operand has 339 places, 746 transitions, 14485 flow. Second operand 10 states and 438 transitions. [2021-03-12 00:12:00,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 878 transitions, 18714 flow [2021-03-12 00:12:01,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 878 transitions, 18389 flow, removed 137 selfloop flow, removed 1 redundant places. [2021-03-12 00:12:01,950 INFO L241 Difference]: Finished difference. Result has 351 places, 797 transitions, 15947 flow [2021-03-12 00:12:01,951 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14202, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15947, PETRI_PLACES=351, PETRI_TRANSITIONS=797} [2021-03-12 00:12:01,951 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 303 predicate places. [2021-03-12 00:12:01,951 INFO L480 AbstractCegarLoop]: Abstraction has has 351 places, 797 transitions, 15947 flow [2021-03-12 00:12:01,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:01,951 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:12:01,951 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:12:01,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-12 00:12:01,951 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:12:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:12:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1342534226, now seen corresponding path program 26 times [2021-03-12 00:12:01,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:12:01,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835443950] [2021-03-12 00:12:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:12:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:12:01,971 INFO L142 QuantifierPusher]: treesize reduction 24, result has 53.8 percent of original size [2021-03-12 00:12:01,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-12 00:12:01,992 INFO L142 QuantifierPusher]: treesize reduction 30, result has 38.8 percent of original size [2021-03-12 00:12:01,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:12:01,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:01,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:12:02,012 INFO L142 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-03-12 00:12:02,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-12 00:12:02,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:02,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:12:02,031 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-12 00:12:02,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:12:02,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:02,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:02,054 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:12:02,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:02,055 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:12:02,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:02,064 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:12:02,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:02,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:02,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:12:02,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:02,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:12:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:12:02,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835443950] [2021-03-12 00:12:02,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:12:02,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:12:02,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992769085] [2021-03-12 00:12:02,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:12:02,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:12:02,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:12:02,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:12:02,086 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:12:02,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 797 transitions, 15947 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:02,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:12:02,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:12:02,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:12:05,975 INFO L129 PetriNetUnfolder]: 4175/13246 cut-off events. [2021-03-12 00:12:05,975 INFO L130 PetriNetUnfolder]: For 327120/331212 co-relation queries the response was YES. [2021-03-12 00:12:06,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101236 conditions, 13246 events. 4175/13246 cut-off events. For 327120/331212 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 156838 event pairs, 1716 based on Foata normal form. 320/13053 useless extension candidates. Maximal degree in co-relation 100000. Up to 5073 conditions per place. [2021-03-12 00:12:06,183 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 650 selfloop transitions, 138 changer transitions 15/890 dead transitions. [2021-03-12 00:12:06,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 890 transitions, 19391 flow [2021-03-12 00:12:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:12:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:12:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 434 transitions. [2021-03-12 00:12:06,185 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2021-03-12 00:12:06,185 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 434 transitions. [2021-03-12 00:12:06,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 434 transitions. [2021-03-12 00:12:06,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:12:06,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 434 transitions. [2021-03-12 00:12:06,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.4) internal successors, (434), 10 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:06,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:06,186 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:06,186 INFO L185 Difference]: Start difference. First operand has 351 places, 797 transitions, 15947 flow. Second operand 10 states and 434 transitions. [2021-03-12 00:12:06,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 890 transitions, 19391 flow [2021-03-12 00:12:08,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 890 transitions, 19229 flow, removed 46 selfloop flow, removed 4 redundant places. [2021-03-12 00:12:08,057 INFO L241 Difference]: Finished difference. Result has 360 places, 799 transitions, 16219 flow [2021-03-12 00:12:08,057 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15689, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16219, PETRI_PLACES=360, PETRI_TRANSITIONS=799} [2021-03-12 00:12:08,057 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 312 predicate places. [2021-03-12 00:12:08,058 INFO L480 AbstractCegarLoop]: Abstraction has has 360 places, 799 transitions, 16219 flow [2021-03-12 00:12:08,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:08,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:12:08,058 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:12:08,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-12 00:12:08,058 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:12:08,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:12:08,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1772492146, now seen corresponding path program 27 times [2021-03-12 00:12:08,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:12:08,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271894038] [2021-03-12 00:12:08,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:12:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:12:08,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:08,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:12:08,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:08,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:08,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:08,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:12:08,135 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-03-12 00:12:08,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-12 00:12:08,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:08,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:12:08,167 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-12 00:12:08,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:12:08,177 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-03-12 00:12:08,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:08,189 INFO L142 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size [2021-03-12 00:12:08,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:12:08,196 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-12 00:12:08,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:08,207 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-12 00:12:08,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:08,219 INFO L142 QuantifierPusher]: treesize reduction 11, result has 42.1 percent of original size [2021-03-12 00:12:08,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:12:08,230 INFO L142 QuantifierPusher]: treesize reduction 12, result has 40.0 percent of original size [2021-03-12 00:12:08,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:12:08,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:08,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:12:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:12:08,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271894038] [2021-03-12 00:12:08,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:12:08,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-12 00:12:08,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582880387] [2021-03-12 00:12:08,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-12 00:12:08,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:12:08,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-12 00:12:08,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-03-12 00:12:08,244 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:12:08,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 799 transitions, 16219 flow. Second operand has 13 states, 13 states have (on average 35.46153846153846) internal successors, (461), 13 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:08,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:12:08,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:12:08,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:12:14,670 INFO L129 PetriNetUnfolder]: 5856/19541 cut-off events. [2021-03-12 00:12:14,670 INFO L130 PetriNetUnfolder]: For 491648/497574 co-relation queries the response was YES. [2021-03-12 00:12:14,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149547 conditions, 19541 events. 5856/19541 cut-off events. For 491648/497574 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 252968 event pairs, 1585 based on Foata normal form. 1333/20031 useless extension candidates. Maximal degree in co-relation 147276. Up to 4662 conditions per place. [2021-03-12 00:12:14,946 INFO L132 encePairwiseOnDemand]: 44/63 looper letters, 616 selfloop transitions, 525 changer transitions 109/1337 dead transitions. [2021-03-12 00:12:14,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 1337 transitions, 28955 flow [2021-03-12 00:12:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 00:12:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-03-12 00:12:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1187 transitions. [2021-03-12 00:12:14,948 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.69782480893592 [2021-03-12 00:12:14,949 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1187 transitions. [2021-03-12 00:12:14,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1187 transitions. [2021-03-12 00:12:14,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:12:14,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1187 transitions. [2021-03-12 00:12:14,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 43.96296296296296) internal successors, (1187), 27 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:14,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 63.0) internal successors, (1764), 28 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:14,952 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 63.0) internal successors, (1764), 28 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:14,952 INFO L185 Difference]: Start difference. First operand has 360 places, 799 transitions, 16219 flow. Second operand 27 states and 1187 transitions. [2021-03-12 00:12:14,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 1337 transitions, 28955 flow [2021-03-12 00:12:17,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 1337 transitions, 28598 flow, removed 96 selfloop flow, removed 5 redundant places. [2021-03-12 00:12:17,783 INFO L241 Difference]: Finished difference. Result has 405 places, 982 transitions, 21833 flow [2021-03-12 00:12:17,784 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15766, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=21833, PETRI_PLACES=405, PETRI_TRANSITIONS=982} [2021-03-12 00:12:17,784 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 357 predicate places. [2021-03-12 00:12:17,784 INFO L480 AbstractCegarLoop]: Abstraction has has 405 places, 982 transitions, 21833 flow [2021-03-12 00:12:17,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 35.46153846153846) internal successors, (461), 13 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:17,784 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:12:17,784 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:12:17,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-12 00:12:17,784 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:12:17,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:12:17,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1815351972, now seen corresponding path program 28 times [2021-03-12 00:12:17,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:12:17,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561342426] [2021-03-12 00:12:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:12:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:12:17,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:17,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:12:17,802 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-12 00:12:17,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:12:17,814 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-12 00:12:17,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:17,820 INFO L142 QuantifierPusher]: treesize reduction 46, result has 22.0 percent of original size [2021-03-12 00:12:17,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:17,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:17,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:17,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:17,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:17,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:17,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:17,859 INFO L142 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-03-12 00:12:17,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:12:17,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:17,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:12:17,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:17,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:12:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:12:17,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561342426] [2021-03-12 00:12:17,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:12:17,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:12:17,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108617230] [2021-03-12 00:12:17,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:12:17,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:12:17,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:12:17,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:12:17,879 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:12:17,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 982 transitions, 21833 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:17,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:12:17,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:12:17,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:12:29,617 INFO L129 PetriNetUnfolder]: 10618/32896 cut-off events. [2021-03-12 00:12:29,617 INFO L130 PetriNetUnfolder]: For 1177000/1188065 co-relation queries the response was YES. [2021-03-12 00:12:30,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285375 conditions, 32896 events. 10618/32896 cut-off events. For 1177000/1188065 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 448991 event pairs, 2585 based on Foata normal form. 1902/33617 useless extension candidates. Maximal degree in co-relation 284196. Up to 8993 conditions per place. [2021-03-12 00:12:30,192 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 972 selfloop transitions, 579 changer transitions 58/1696 dead transitions. [2021-03-12 00:12:30,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1696 transitions, 42136 flow [2021-03-12 00:12:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-12 00:12:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-12 00:12:30,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 817 transitions. [2021-03-12 00:12:30,193 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2021-03-12 00:12:30,193 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 817 transitions. [2021-03-12 00:12:30,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 817 transitions. [2021-03-12 00:12:30,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:12:30,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 817 transitions. [2021-03-12 00:12:30,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 43.0) internal successors, (817), 19 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:30,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:30,196 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:30,196 INFO L185 Difference]: Start difference. First operand has 405 places, 982 transitions, 21833 flow. Second operand 19 states and 817 transitions. [2021-03-12 00:12:30,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1696 transitions, 42136 flow [2021-03-12 00:12:39,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 1696 transitions, 41328 flow, removed 340 selfloop flow, removed 4 redundant places. [2021-03-12 00:12:39,743 INFO L241 Difference]: Finished difference. Result has 434 places, 1317 transitions, 32338 flow [2021-03-12 00:12:39,744 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=21380, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=32338, PETRI_PLACES=434, PETRI_TRANSITIONS=1317} [2021-03-12 00:12:39,744 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 386 predicate places. [2021-03-12 00:12:39,744 INFO L480 AbstractCegarLoop]: Abstraction has has 434 places, 1317 transitions, 32338 flow [2021-03-12 00:12:39,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:39,744 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:12:39,744 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:12:39,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-12 00:12:39,744 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:12:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:12:39,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1311416364, now seen corresponding path program 29 times [2021-03-12 00:12:39,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:12:39,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780182035] [2021-03-12 00:12:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:12:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:12:39,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:39,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:12:39,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:39,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:12:39,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:39,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:12:39,789 INFO L142 QuantifierPusher]: treesize reduction 13, result has 55.2 percent of original size [2021-03-12 00:12:39,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:12:39,790 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-12 00:12:39,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:12:39,793 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-03-12 00:12:39,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:39,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:39,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:39,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:39,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:39,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:39,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:12:39,814 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-12 00:12:39,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:12:39,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:12:39,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:12:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:12:39,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780182035] [2021-03-12 00:12:39,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:12:39,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:12:39,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034239057] [2021-03-12 00:12:39,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:12:39,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:12:39,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:12:39,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:12:39,824 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:12:39,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1317 transitions, 32338 flow. Second operand has 8 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) [2021-03-12 00:12:39,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:12:39,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:12:39,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:12:53,807 INFO L129 PetriNetUnfolder]: 9891/32468 cut-off events. [2021-03-12 00:12:53,807 INFO L130 PetriNetUnfolder]: For 1424183/1434971 co-relation queries the response was YES. [2021-03-12 00:12:54,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296359 conditions, 32468 events. 9891/32468 cut-off events. For 1424183/1434971 co-relation queries the response was YES. Maximal size of possible extension queue 1832. Compared 452109 event pairs, 2164 based on Foata normal form. 1999/33302 useless extension candidates. Maximal degree in co-relation 295001. Up to 8635 conditions per place. [2021-03-12 00:12:54,421 INFO L132 encePairwiseOnDemand]: 52/63 looper letters, 871 selfloop transitions, 473 changer transitions 68/1499 dead transitions. [2021-03-12 00:12:54,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1499 transitions, 39301 flow [2021-03-12 00:12:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:12:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:12:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 345 transitions. [2021-03-12 00:12:54,422 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6845238095238095 [2021-03-12 00:12:54,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 345 transitions. [2021-03-12 00:12:54,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 345 transitions. [2021-03-12 00:12:54,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:12:54,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 345 transitions. [2021-03-12 00:12:54,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:54,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:54,423 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:12:54,423 INFO L185 Difference]: Start difference. First operand has 434 places, 1317 transitions, 32338 flow. Second operand 8 states and 345 transitions. [2021-03-12 00:12:54,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1499 transitions, 39301 flow [2021-03-12 00:13:04,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 1499 transitions, 37879 flow, removed 680 selfloop flow, removed 5 redundant places. [2021-03-12 00:13:04,583 INFO L241 Difference]: Finished difference. Result has 437 places, 1309 transitions, 32375 flow [2021-03-12 00:13:04,584 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=31022, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=32375, PETRI_PLACES=437, PETRI_TRANSITIONS=1309} [2021-03-12 00:13:04,584 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 389 predicate places. [2021-03-12 00:13:04,584 INFO L480 AbstractCegarLoop]: Abstraction has has 437 places, 1309 transitions, 32375 flow [2021-03-12 00:13:04,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 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) [2021-03-12 00:13:04,584 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:13:04,584 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:13:04,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-12 00:13:04,584 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:13:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:13:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1914166626, now seen corresponding path program 30 times [2021-03-12 00:13:04,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:13:04,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24883254] [2021-03-12 00:13:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:13:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:13:04,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:13:04,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:13:04,608 INFO L142 QuantifierPusher]: treesize reduction 11, result has 67.6 percent of original size [2021-03-12 00:13:04,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-12 00:13:04,630 INFO L142 QuantifierPusher]: treesize reduction 29, result has 19.4 percent of original size [2021-03-12 00:13:04,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:13:04,636 INFO L142 QuantifierPusher]: treesize reduction 39, result has 25.0 percent of original size [2021-03-12 00:13:04,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:13:04,646 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-03-12 00:13:04,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-12 00:13:04,673 INFO L142 QuantifierPusher]: treesize reduction 5, result has 85.3 percent of original size [2021-03-12 00:13:04,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-12 00:13:04,701 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-12 00:13:04,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-12 00:13:04,729 INFO L142 QuantifierPusher]: treesize reduction 15, result has 58.3 percent of original size [2021-03-12 00:13:04,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:13:04,759 INFO L142 QuantifierPusher]: treesize reduction 54, result has 15.6 percent of original size [2021-03-12 00:13:04,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:13:04,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:13:04,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:13:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:13:04,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24883254] [2021-03-12 00:13:04,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:13:04,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:13:04,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702949013] [2021-03-12 00:13:04,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:13:04,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:13:04,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:13:04,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:13:04,774 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:13:04,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1309 transitions, 32375 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:04,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:13:04,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:13:04,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:13:20,725 INFO L129 PetriNetUnfolder]: 10862/36343 cut-off events. [2021-03-12 00:13:20,725 INFO L130 PetriNetUnfolder]: For 1565814/1581947 co-relation queries the response was YES. [2021-03-12 00:13:21,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 334908 conditions, 36343 events. 10862/36343 cut-off events. For 1565814/1581947 co-relation queries the response was YES. Maximal size of possible extension queue 2122. Compared 521561 event pairs, 3004 based on Foata normal form. 3128/38214 useless extension candidates. Maximal degree in co-relation 333781. Up to 11214 conditions per place. [2021-03-12 00:13:21,717 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 990 selfloop transitions, 619 changer transitions 34/1730 dead transitions. [2021-03-12 00:13:21,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1730 transitions, 47000 flow [2021-03-12 00:13:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-12 00:13:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-03-12 00:13:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 852 transitions. [2021-03-12 00:13:21,718 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2021-03-12 00:13:21,718 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 852 transitions. [2021-03-12 00:13:21,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 852 transitions. [2021-03-12 00:13:21,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:13:21,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 852 transitions. [2021-03-12 00:13:21,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 42.6) internal successors, (852), 20 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:21,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 63.0) internal successors, (1323), 21 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:21,720 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 63.0) internal successors, (1323), 21 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:21,720 INFO L185 Difference]: Start difference. First operand has 437 places, 1309 transitions, 32375 flow. Second operand 20 states and 852 transitions. [2021-03-12 00:13:21,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1730 transitions, 47000 flow [2021-03-12 00:13:36,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1730 transitions, 46637 flow, removed 181 selfloop flow, removed 2 redundant places. [2021-03-12 00:13:36,551 INFO L241 Difference]: Finished difference. Result has 466 places, 1478 transitions, 39169 flow [2021-03-12 00:13:36,552 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=32182, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=780, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=39169, PETRI_PLACES=466, PETRI_TRANSITIONS=1478} [2021-03-12 00:13:36,552 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 418 predicate places. [2021-03-12 00:13:36,552 INFO L480 AbstractCegarLoop]: Abstraction has has 466 places, 1478 transitions, 39169 flow [2021-03-12 00:13:36,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:36,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:13:36,552 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:13:36,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-12 00:13:36,552 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:13:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:13:36,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1476335300, now seen corresponding path program 31 times [2021-03-12 00:13:36,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:13:36,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423942199] [2021-03-12 00:13:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:13:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:13:36,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:13:36,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:13:36,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:13:36,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:13:36,584 INFO L142 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size [2021-03-12 00:13:36,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:13:36,588 INFO L142 QuantifierPusher]: treesize reduction 7, result has 69.6 percent of original size [2021-03-12 00:13:36,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:13:36,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:13:36,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:13:36,599 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-12 00:13:36,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:13:36,606 INFO L142 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-03-12 00:13:36,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:13:36,617 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-03-12 00:13:36,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:13:36,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:13:36,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:13:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:13:36,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423942199] [2021-03-12 00:13:36,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:13:36,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:13:36,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577654749] [2021-03-12 00:13:36,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:13:36,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:13:36,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:13:36,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:13:36,619 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:13:36,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1478 transitions, 39169 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:36,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:13:36,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:13:36,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:13:53,494 INFO L129 PetriNetUnfolder]: 10400/35567 cut-off events. [2021-03-12 00:13:53,494 INFO L130 PetriNetUnfolder]: For 1593675/1608101 co-relation queries the response was YES. [2021-03-12 00:13:54,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 327618 conditions, 35567 events. 10400/35567 cut-off events. For 1593675/1608101 co-relation queries the response was YES. Maximal size of possible extension queue 2065. Compared 512943 event pairs, 3929 based on Foata normal form. 1421/35668 useless extension candidates. Maximal degree in co-relation 326406. Up to 19156 conditions per place. [2021-03-12 00:13:54,285 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 1252 selfloop transitions, 134 changer transitions 4/1477 dead transitions. [2021-03-12 00:13:54,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1477 transitions, 41623 flow [2021-03-12 00:13:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:13:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:13:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2021-03-12 00:13:54,286 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6957671957671958 [2021-03-12 00:13:54,286 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 263 transitions. [2021-03-12 00:13:54,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 263 transitions. [2021-03-12 00:13:54,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:13:54,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 263 transitions. [2021-03-12 00:13:54,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:54,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:54,287 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:13:54,287 INFO L185 Difference]: Start difference. First operand has 466 places, 1478 transitions, 39169 flow. Second operand 6 states and 263 transitions. [2021-03-12 00:13:54,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1477 transitions, 41623 flow [2021-03-12 00:14:09,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1477 transitions, 41163 flow, removed 220 selfloop flow, removed 1 redundant places. [2021-03-12 00:14:09,119 INFO L241 Difference]: Finished difference. Result has 472 places, 1449 transitions, 38064 flow [2021-03-12 00:14:09,120 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=37471, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=38064, PETRI_PLACES=472, PETRI_TRANSITIONS=1449} [2021-03-12 00:14:09,120 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 424 predicate places. [2021-03-12 00:14:09,120 INFO L480 AbstractCegarLoop]: Abstraction has has 472 places, 1449 transitions, 38064 flow [2021-03-12 00:14:09,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:09,121 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:14:09,121 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:14:09,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-12 00:14:09,121 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:14:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:14:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash -394073734, now seen corresponding path program 32 times [2021-03-12 00:14:09,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:14:09,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197340841] [2021-03-12 00:14:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:14:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:14:09,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:09,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-12 00:14:09,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:09,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:14:09,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:09,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:14:09,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:09,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:14:09,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:09,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:14:09,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:09,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:14:09,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:09,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:14:09,206 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-12 00:14:09,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:14:09,215 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-12 00:14:09,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:14:09,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:09,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:14:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:14:09,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197340841] [2021-03-12 00:14:09,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:14:09,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:14:09,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29871628] [2021-03-12 00:14:09,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:14:09,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:14:09,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:14:09,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:14:09,217 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:14:09,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1449 transitions, 38064 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:09,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:14:09,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:14:09,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:14:23,915 INFO L129 PetriNetUnfolder]: 8311/30160 cut-off events. [2021-03-12 00:14:23,916 INFO L130 PetriNetUnfolder]: For 1362209/1375688 co-relation queries the response was YES. [2021-03-12 00:14:24,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277741 conditions, 30160 events. 8311/30160 cut-off events. For 1362209/1375688 co-relation queries the response was YES. Maximal size of possible extension queue 1741. Compared 433900 event pairs, 2980 based on Foata normal form. 1404/30519 useless extension candidates. Maximal degree in co-relation 276180. Up to 14424 conditions per place. [2021-03-12 00:14:24,498 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 1035 selfloop transitions, 272 changer transitions 119/1513 dead transitions. [2021-03-12 00:14:24,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1513 transitions, 42227 flow [2021-03-12 00:14:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 00:14:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-12 00:14:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 638 transitions. [2021-03-12 00:14:24,499 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6751322751322751 [2021-03-12 00:14:24,499 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 638 transitions. [2021-03-12 00:14:24,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 638 transitions. [2021-03-12 00:14:24,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:14:24,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 638 transitions. [2021-03-12 00:14:24,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 42.53333333333333) internal successors, (638), 15 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:24,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 63.0) internal successors, (1008), 16 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:24,501 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 63.0) internal successors, (1008), 16 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:24,502 INFO L185 Difference]: Start difference. First operand has 472 places, 1449 transitions, 38064 flow. Second operand 15 states and 638 transitions. [2021-03-12 00:14:24,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1513 transitions, 42227 flow [2021-03-12 00:14:36,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1513 transitions, 41946 flow, removed 63 selfloop flow, removed 7 redundant places. [2021-03-12 00:14:36,080 INFO L241 Difference]: Finished difference. Result has 484 places, 1354 transitions, 35950 flow [2021-03-12 00:14:36,081 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=35302, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=35950, PETRI_PLACES=484, PETRI_TRANSITIONS=1354} [2021-03-12 00:14:36,081 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 436 predicate places. [2021-03-12 00:14:36,081 INFO L480 AbstractCegarLoop]: Abstraction has has 484 places, 1354 transitions, 35950 flow [2021-03-12 00:14:36,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:36,082 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:14:36,082 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:14:36,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-12 00:14:36,082 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:14:36,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:14:36,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1392820084, now seen corresponding path program 33 times [2021-03-12 00:14:36,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:14:36,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184999889] [2021-03-12 00:14:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:14:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:14:36,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:36,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:14:36,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:36,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:14:36,117 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-12 00:14:36,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:14:36,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:36,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:14:36,124 INFO L142 QuantifierPusher]: treesize reduction 11, result has 56.0 percent of original size [2021-03-12 00:14:36,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:14:36,138 INFO L142 QuantifierPusher]: treesize reduction 14, result has 62.2 percent of original size [2021-03-12 00:14:36,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-12 00:14:36,153 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-12 00:14:36,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:14:36,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:36,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:14:36,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:36,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:14:36,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:36,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:14:36,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:14:36,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:14:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:14:36,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184999889] [2021-03-12 00:14:36,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:14:36,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:14:36,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694495185] [2021-03-12 00:14:36,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:14:36,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:14:36,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:14:36,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:14:36,180 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:14:36,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1354 transitions, 35950 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:36,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:14:36,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:14:36,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:14:49,768 INFO L129 PetriNetUnfolder]: 7678/27793 cut-off events. [2021-03-12 00:14:49,768 INFO L130 PetriNetUnfolder]: For 1362276/1372090 co-relation queries the response was YES. [2021-03-12 00:14:50,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263133 conditions, 27793 events. 7678/27793 cut-off events. For 1362276/1372090 co-relation queries the response was YES. Maximal size of possible extension queue 1605. Compared 394357 event pairs, 1666 based on Foata normal form. 2538/29492 useless extension candidates. Maximal degree in co-relation 261499. Up to 7304 conditions per place. [2021-03-12 00:14:50,277 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 848 selfloop transitions, 524 changer transitions 58/1517 dead transitions. [2021-03-12 00:14:50,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 1517 transitions, 43578 flow [2021-03-12 00:14:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:14:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:14:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 380 transitions. [2021-03-12 00:14:50,278 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6701940035273368 [2021-03-12 00:14:50,278 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 380 transitions. [2021-03-12 00:14:50,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 380 transitions. [2021-03-12 00:14:50,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:14:50,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 380 transitions. [2021-03-12 00:14:50,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 42.22222222222222) internal successors, (380), 9 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:50,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:50,279 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:14:50,279 INFO L185 Difference]: Start difference. First operand has 484 places, 1354 transitions, 35950 flow. Second operand 9 states and 380 transitions. [2021-03-12 00:14:50,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 1517 transitions, 43578 flow [2021-03-12 00:15:00,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1517 transitions, 42410 flow, removed 291 selfloop flow, removed 7 redundant places. [2021-03-12 00:15:00,828 INFO L241 Difference]: Finished difference. Result has 489 places, 1357 transitions, 37193 flow [2021-03-12 00:15:00,828 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33922, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=850, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37193, PETRI_PLACES=489, PETRI_TRANSITIONS=1357} [2021-03-12 00:15:00,829 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 441 predicate places. [2021-03-12 00:15:00,829 INFO L480 AbstractCegarLoop]: Abstraction has has 489 places, 1357 transitions, 37193 flow [2021-03-12 00:15:00,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:00,829 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:15:00,829 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:15:00,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-12 00:15:00,829 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:15:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:15:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1963298982, now seen corresponding path program 34 times [2021-03-12 00:15:00,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:15:00,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626923642] [2021-03-12 00:15:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:15:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:15:00,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:00,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-12 00:15:00,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:00,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:15:00,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:00,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:15:00,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:00,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:15:00,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:00,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:15:00,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:00,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:15:00,919 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-12 00:15:00,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:15:00,930 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-12 00:15:00,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:15:00,942 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-03-12 00:15:00,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:15:00,952 INFO L142 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-03-12 00:15:00,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:15:00,953 INFO L142 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-03-12 00:15:00,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:15:00,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:00,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:15:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:15:00,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626923642] [2021-03-12 00:15:00,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:15:00,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:15:00,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616024021] [2021-03-12 00:15:00,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:15:00,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:15:00,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:15:00,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:15:00,967 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:15:00,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1357 transitions, 37193 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:00,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:15:00,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:15:00,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:15:17,307 INFO L129 PetriNetUnfolder]: 8309/31999 cut-off events. [2021-03-12 00:15:17,307 INFO L130 PetriNetUnfolder]: For 1543603/1555527 co-relation queries the response was YES. [2021-03-12 00:15:17,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304818 conditions, 31999 events. 8309/31999 cut-off events. For 1543603/1555527 co-relation queries the response was YES. Maximal size of possible extension queue 1873. Compared 474743 event pairs, 1863 based on Foata normal form. 3367/34277 useless extension candidates. Maximal degree in co-relation 302711. Up to 8161 conditions per place. [2021-03-12 00:15:18,007 INFO L132 encePairwiseOnDemand]: 46/63 looper letters, 721 selfloop transitions, 823 changer transitions 39/1670 dead transitions. [2021-03-12 00:15:18,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1670 transitions, 48826 flow [2021-03-12 00:15:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-12 00:15:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-12 00:15:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 629 transitions. [2021-03-12 00:15:18,008 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7131519274376418 [2021-03-12 00:15:18,008 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 629 transitions. [2021-03-12 00:15:18,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 629 transitions. [2021-03-12 00:15:18,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:15:18,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 629 transitions. [2021-03-12 00:15:18,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 44.92857142857143) internal successors, (629), 14 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:18,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:18,010 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:18,010 INFO L185 Difference]: Start difference. First operand has 489 places, 1357 transitions, 37193 flow. Second operand 14 states and 629 transitions. [2021-03-12 00:15:18,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1670 transitions, 48826 flow [2021-03-12 00:15:31,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 1670 transitions, 48154 flow, removed 302 selfloop flow, removed 3 redundant places. [2021-03-12 00:15:31,737 INFO L241 Difference]: Finished difference. Result has 509 places, 1530 transitions, 45015 flow [2021-03-12 00:15:31,738 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36763, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=659, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=45015, PETRI_PLACES=509, PETRI_TRANSITIONS=1530} [2021-03-12 00:15:31,738 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 461 predicate places. [2021-03-12 00:15:31,739 INFO L480 AbstractCegarLoop]: Abstraction has has 509 places, 1530 transitions, 45015 flow [2021-03-12 00:15:31,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:31,739 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:15:31,739 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:15:31,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-12 00:15:31,739 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:15:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:15:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1889392504, now seen corresponding path program 35 times [2021-03-12 00:15:31,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:15:31,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104372742] [2021-03-12 00:15:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:15:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:15:31,753 INFO L142 QuantifierPusher]: treesize reduction 27, result has 37.2 percent of original size [2021-03-12 00:15:31,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:15:31,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:31,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:15:31,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:31,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:15:31,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:31,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:15:31,776 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-12 00:15:31,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:15:31,779 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:15:31,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:15:31,785 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:15:31,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:15:31,792 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-12 00:15:31,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:15:31,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:31,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:15:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:15:31,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104372742] [2021-03-12 00:15:31,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:15:31,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:15:31,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181632031] [2021-03-12 00:15:31,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:15:31,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:15:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:15:31,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:15:31,802 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:15:31,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 1530 transitions, 45015 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:31,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:15:31,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:15:31,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:15:45,239 INFO L129 PetriNetUnfolder]: 6312/24969 cut-off events. [2021-03-12 00:15:45,239 INFO L130 PetriNetUnfolder]: For 1231084/1236651 co-relation queries the response was YES. [2021-03-12 00:15:45,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242287 conditions, 24969 events. 6312/24969 cut-off events. For 1231084/1236651 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 359767 event pairs, 2079 based on Foata normal form. 1469/25537 useless extension candidates. Maximal degree in co-relation 239507. Up to 5037 conditions per place. [2021-03-12 00:15:45,985 INFO L132 encePairwiseOnDemand]: 54/63 looper letters, 800 selfloop transitions, 467 changer transitions 148/1502 dead transitions. [2021-03-12 00:15:45,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1502 transitions, 46322 flow [2021-03-12 00:15:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:15:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:15:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2021-03-12 00:15:45,987 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6802721088435374 [2021-03-12 00:15:45,987 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 300 transitions. [2021-03-12 00:15:45,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 300 transitions. [2021-03-12 00:15:45,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:15:45,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 300 transitions. [2021-03-12 00:15:45,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.857142857142854) internal successors, (300), 7 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:45,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:45,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:45,988 INFO L185 Difference]: Start difference. First operand has 509 places, 1530 transitions, 45015 flow. Second operand 7 states and 300 transitions. [2021-03-12 00:15:45,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1502 transitions, 46322 flow [2021-03-12 00:15:56,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 1502 transitions, 45601 flow, removed 324 selfloop flow, removed 2 redundant places. [2021-03-12 00:15:56,961 INFO L241 Difference]: Finished difference. Result has 515 places, 1310 transitions, 38604 flow [2021-03-12 00:15:56,962 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40912, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=455, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=978, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38604, PETRI_PLACES=515, PETRI_TRANSITIONS=1310} [2021-03-12 00:15:56,962 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 467 predicate places. [2021-03-12 00:15:56,962 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1310 transitions, 38604 flow [2021-03-12 00:15:56,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:56,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:15:56,963 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:15:56,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-12 00:15:56,963 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:15:56,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:15:56,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1089316956, now seen corresponding path program 36 times [2021-03-12 00:15:56,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:15:56,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742624875] [2021-03-12 00:15:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:15:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:15:56,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:56,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-12 00:15:56,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:56,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:15:56,998 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-12 00:15:56,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:15:57,000 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-12 00:15:57,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:15:57,003 INFO L142 QuantifierPusher]: treesize reduction 32, result has 43.9 percent of original size [2021-03-12 00:15:57,004 INFO L147 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size 15 [2021-03-12 00:15:57,006 INFO L142 QuantifierPusher]: treesize reduction 31, result has 24.4 percent of original size [2021-03-12 00:15:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:15:57,009 INFO L142 QuantifierPusher]: treesize reduction 24, result has 41.5 percent of original size [2021-03-12 00:15:57,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:15:57,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:57,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:15:57,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-03-12 00:15:57,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:15:57,035 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-03-12 00:15:57,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:15:57,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:15:57,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:15:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:15:57,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742624875] [2021-03-12 00:15:57,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:15:57,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:15:57,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593935838] [2021-03-12 00:15:57,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:15:57,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:15:57,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:15:57,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:15:57,037 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:15:57,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1310 transitions, 38604 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:15:57,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:15:57,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:15:57,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:16:08,371 INFO L129 PetriNetUnfolder]: 5679/22558 cut-off events. [2021-03-12 00:16:08,371 INFO L130 PetriNetUnfolder]: For 1118112/1123604 co-relation queries the response was YES. [2021-03-12 00:16:08,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219013 conditions, 22558 events. 5679/22558 cut-off events. For 1118112/1123604 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 319702 event pairs, 2530 based on Foata normal form. 670/22337 useless extension candidates. Maximal degree in co-relation 217682. Up to 11759 conditions per place. [2021-03-12 00:16:08,761 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 1053 selfloop transitions, 137 changer transitions 10/1287 dead transitions. [2021-03-12 00:16:08,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 1287 transitions, 40301 flow [2021-03-12 00:16:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:16:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:16:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 264 transitions. [2021-03-12 00:16:08,763 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2021-03-12 00:16:08,763 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 264 transitions. [2021-03-12 00:16:08,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 264 transitions. [2021-03-12 00:16:08,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:16:08,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 264 transitions. [2021-03-12 00:16:08,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:08,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:08,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:08,764 INFO L185 Difference]: Start difference. First operand has 515 places, 1310 transitions, 38604 flow. Second operand 6 states and 264 transitions. [2021-03-12 00:16:08,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 1287 transitions, 40301 flow [2021-03-12 00:16:18,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 1287 transitions, 39605 flow, removed 42 selfloop flow, removed 7 redundant places. [2021-03-12 00:16:18,514 INFO L241 Difference]: Finished difference. Result has 515 places, 1263 transitions, 36850 flow [2021-03-12 00:16:18,515 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36704, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=36850, PETRI_PLACES=515, PETRI_TRANSITIONS=1263} [2021-03-12 00:16:18,515 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 467 predicate places. [2021-03-12 00:16:18,515 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1263 transitions, 36850 flow [2021-03-12 00:16:18,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:18,515 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:16:18,515 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:16:18,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-12 00:16:18,516 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:16:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:16:18,516 INFO L82 PathProgramCache]: Analyzing trace with hash 48132008, now seen corresponding path program 37 times [2021-03-12 00:16:18,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:16:18,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968523679] [2021-03-12 00:16:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:16:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:16:18,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:18,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:16:18,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:18,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:16:18,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:18,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:16:18,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:18,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:16:18,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:18,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:16:18,575 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-03-12 00:16:18,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:16:18,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:18,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:16:18,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-03-12 00:16:18,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:16:18,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:18,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:16:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:16:18,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968523679] [2021-03-12 00:16:18,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:16:18,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:16:18,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311284406] [2021-03-12 00:16:18,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:16:18,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:16:18,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:16:18,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:16:18,613 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:16:18,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1263 transitions, 36850 flow. Second operand has 8 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) [2021-03-12 00:16:18,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:16:18,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:16:18,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:16:27,808 INFO L129 PetriNetUnfolder]: 4614/18573 cut-off events. [2021-03-12 00:16:27,808 INFO L130 PetriNetUnfolder]: For 906463/911169 co-relation queries the response was YES. [2021-03-12 00:16:28,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182479 conditions, 18573 events. 4614/18573 cut-off events. For 906463/911169 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 255721 event pairs, 1607 based on Foata normal form. 1069/18932 useless extension candidates. Maximal degree in co-relation 181024. Up to 7515 conditions per place. [2021-03-12 00:16:28,125 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 790 selfloop transitions, 252 changer transitions 159/1288 dead transitions. [2021-03-12 00:16:28,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1288 transitions, 39492 flow [2021-03-12 00:16:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:16:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:16:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 366 transitions. [2021-03-12 00:16:28,126 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2021-03-12 00:16:28,126 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 366 transitions. [2021-03-12 00:16:28,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 366 transitions. [2021-03-12 00:16:28,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:16:28,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 366 transitions. [2021-03-12 00:16:28,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.75) internal successors, (366), 8 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:28,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:28,127 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:28,127 INFO L185 Difference]: Start difference. First operand has 515 places, 1263 transitions, 36850 flow. Second operand 8 states and 366 transitions. [2021-03-12 00:16:28,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1288 transitions, 39492 flow [2021-03-12 00:16:34,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1288 transitions, 38915 flow, removed 82 selfloop flow, removed 8 redundant places. [2021-03-12 00:16:34,833 INFO L241 Difference]: Finished difference. Result has 520 places, 1076 transitions, 32042 flow [2021-03-12 00:16:34,834 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=32890, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=32042, PETRI_PLACES=520, PETRI_TRANSITIONS=1076} [2021-03-12 00:16:34,834 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 472 predicate places. [2021-03-12 00:16:34,834 INFO L480 AbstractCegarLoop]: Abstraction has has 520 places, 1076 transitions, 32042 flow [2021-03-12 00:16:34,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 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) [2021-03-12 00:16:34,834 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:16:34,834 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:16:34,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-12 00:16:34,835 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:16:34,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:16:34,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1502397832, now seen corresponding path program 38 times [2021-03-12 00:16:34,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:16:34,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146015515] [2021-03-12 00:16:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:16:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:16:34,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:34,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:16:34,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:34,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:16:34,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:34,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:16:34,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:34,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:16:34,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:34,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:16:34,880 INFO L142 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-03-12 00:16:34,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:16:34,889 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-03-12 00:16:34,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:16:34,898 INFO L142 QuantifierPusher]: treesize reduction 25, result has 35.9 percent of original size [2021-03-12 00:16:34,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:16:34,910 INFO L142 QuantifierPusher]: treesize reduction 29, result has 54.7 percent of original size [2021-03-12 00:16:34,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-12 00:16:34,935 INFO L142 QuantifierPusher]: treesize reduction 17, result has 59.5 percent of original size [2021-03-12 00:16:34,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-12 00:16:34,956 INFO L142 QuantifierPusher]: treesize reduction 21, result has 38.2 percent of original size [2021-03-12 00:16:34,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:16:34,966 INFO L142 QuantifierPusher]: treesize reduction 23, result has 36.1 percent of original size [2021-03-12 00:16:34,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:16:34,982 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-12 00:16:34,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:16:34,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:34,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:16:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:16:34,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146015515] [2021-03-12 00:16:34,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:16:34,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-12 00:16:34,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353620566] [2021-03-12 00:16:34,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 00:16:34,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:16:34,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 00:16:34,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-03-12 00:16:34,985 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:16:34,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 1076 transitions, 32042 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:34,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:16:34,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:16:34,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:16:43,203 INFO L129 PetriNetUnfolder]: 4094/17204 cut-off events. [2021-03-12 00:16:43,203 INFO L130 PetriNetUnfolder]: For 867663/871972 co-relation queries the response was YES. [2021-03-12 00:16:43,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171593 conditions, 17204 events. 4094/17204 cut-off events. For 867663/871972 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 237472 event pairs, 1608 based on Foata normal form. 715/17321 useless extension candidates. Maximal degree in co-relation 170231. Up to 7713 conditions per place. [2021-03-12 00:16:43,751 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 900 selfloop transitions, 191 changer transitions 62/1240 dead transitions. [2021-03-12 00:16:43,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 1240 transitions, 39038 flow [2021-03-12 00:16:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 00:16:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-12 00:16:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 654 transitions. [2021-03-12 00:16:43,752 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.692063492063492 [2021-03-12 00:16:43,752 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 654 transitions. [2021-03-12 00:16:43,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 654 transitions. [2021-03-12 00:16:43,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:16:43,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 654 transitions. [2021-03-12 00:16:43,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.6) internal successors, (654), 15 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:43,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 63.0) internal successors, (1008), 16 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:43,762 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 63.0) internal successors, (1008), 16 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:43,762 INFO L185 Difference]: Start difference. First operand has 520 places, 1076 transitions, 32042 flow. Second operand 15 states and 654 transitions. [2021-03-12 00:16:43,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 1240 transitions, 39038 flow [2021-03-12 00:16:49,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 1240 transitions, 38221 flow, removed 279 selfloop flow, removed 14 redundant places. [2021-03-12 00:16:49,210 INFO L241 Difference]: Finished difference. Result has 523 places, 1111 transitions, 33085 flow [2021-03-12 00:16:49,211 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=31439, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=889, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=33085, PETRI_PLACES=523, PETRI_TRANSITIONS=1111} [2021-03-12 00:16:49,211 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 475 predicate places. [2021-03-12 00:16:49,211 INFO L480 AbstractCegarLoop]: Abstraction has has 523 places, 1111 transitions, 33085 flow [2021-03-12 00:16:49,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:49,211 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:16:49,211 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:16:49,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-12 00:16:49,211 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:16:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:16:49,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1840942600, now seen corresponding path program 39 times [2021-03-12 00:16:49,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:16:49,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515884728] [2021-03-12 00:16:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:16:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:16:49,230 INFO L142 QuantifierPusher]: treesize reduction 24, result has 33.3 percent of original size [2021-03-12 00:16:49,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:16:49,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:49,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:16:49,238 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-12 00:16:49,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:16:49,241 INFO L142 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-03-12 00:16:49,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-12 00:16:49,265 INFO L142 QuantifierPusher]: treesize reduction 4, result has 89.7 percent of original size [2021-03-12 00:16:49,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-12 00:16:49,292 INFO L142 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size [2021-03-12 00:16:49,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-12 00:16:49,307 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-03-12 00:16:49,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-12 00:16:49,322 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-12 00:16:49,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:16:49,337 INFO L142 QuantifierPusher]: treesize reduction 10, result has 9.1 percent of original size [2021-03-12 00:16:49,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:16:49,338 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-03-12 00:16:49,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:16:49,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:16:49,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:16:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:16:49,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515884728] [2021-03-12 00:16:49,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:16:49,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:16:49,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981468681] [2021-03-12 00:16:49,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:16:49,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:16:49,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:16:49,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:16:49,340 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:16:49,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 1111 transitions, 33085 flow. Second operand has 8 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) [2021-03-12 00:16:49,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:16:49,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:16:49,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:16:56,934 INFO L129 PetriNetUnfolder]: 3627/16045 cut-off events. [2021-03-12 00:16:56,934 INFO L130 PetriNetUnfolder]: For 805539/809404 co-relation queries the response was YES. [2021-03-12 00:16:57,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159534 conditions, 16045 events. 3627/16045 cut-off events. For 805539/809404 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 222336 event pairs, 1355 based on Foata normal form. 615/16085 useless extension candidates. Maximal degree in co-relation 158172. Up to 5950 conditions per place. [2021-03-12 00:16:57,218 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 792 selfloop transitions, 234 changer transitions 75/1188 dead transitions. [2021-03-12 00:16:57,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1188 transitions, 37394 flow [2021-03-12 00:16:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:16:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:16:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 391 transitions. [2021-03-12 00:16:57,219 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.689594356261023 [2021-03-12 00:16:57,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 391 transitions. [2021-03-12 00:16:57,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 391 transitions. [2021-03-12 00:16:57,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:16:57,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 391 transitions. [2021-03-12 00:16:57,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.44444444444444) internal successors, (391), 9 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:57,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:57,221 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:16:57,221 INFO L185 Difference]: Start difference. First operand has 523 places, 1111 transitions, 33085 flow. Second operand 9 states and 391 transitions. [2021-03-12 00:16:57,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1188 transitions, 37394 flow [2021-03-12 00:17:02,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 1188 transitions, 36949 flow, removed 122 selfloop flow, removed 5 redundant places. [2021-03-12 00:17:02,732 INFO L241 Difference]: Finished difference. Result has 531 places, 1061 transitions, 32072 flow [2021-03-12 00:17:02,733 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=31802, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1080, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32072, PETRI_PLACES=531, PETRI_TRANSITIONS=1061} [2021-03-12 00:17:02,733 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 483 predicate places. [2021-03-12 00:17:02,733 INFO L480 AbstractCegarLoop]: Abstraction has has 531 places, 1061 transitions, 32072 flow [2021-03-12 00:17:02,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 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) [2021-03-12 00:17:02,733 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:02,733 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:02,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-12 00:17:02,734 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:17:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:02,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1818507130, now seen corresponding path program 40 times [2021-03-12 00:17:02,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:02,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988346771] [2021-03-12 00:17:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:02,753 INFO L142 QuantifierPusher]: treesize reduction 23, result has 30.3 percent of original size [2021-03-12 00:17:02,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:02,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:02,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:02,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:02,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:02,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:02,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:02,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:02,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:17:02,779 INFO L142 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-03-12 00:17:02,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:17:02,787 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-03-12 00:17:02,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:17:02,801 INFO L142 QuantifierPusher]: treesize reduction 23, result has 45.2 percent of original size [2021-03-12 00:17:02,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:17:02,815 INFO L142 QuantifierPusher]: treesize reduction 23, result has 47.7 percent of original size [2021-03-12 00:17:02,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:02,831 INFO L142 QuantifierPusher]: treesize reduction 29, result has 27.5 percent of original size [2021-03-12 00:17:02,831 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-12 00:17:02,843 INFO L142 QuantifierPusher]: treesize reduction 29, result has 31.0 percent of original size [2021-03-12 00:17:02,844 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-12 00:17:02,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:02,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:02,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988346771] [2021-03-12 00:17:02,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:02,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-12 00:17:02,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384802968] [2021-03-12 00:17:02,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 00:17:02,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:02,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 00:17:02,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-12 00:17:02,863 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:17:02,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 1061 transitions, 32072 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:02,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:02,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:17:02,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:11,118 INFO L129 PetriNetUnfolder]: 3667/16484 cut-off events. [2021-03-12 00:17:11,118 INFO L130 PetriNetUnfolder]: For 838828/842970 co-relation queries the response was YES. [2021-03-12 00:17:11,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164440 conditions, 16484 events. 3667/16484 cut-off events. For 838828/842970 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 230561 event pairs, 1472 based on Foata normal form. 672/16578 useless extension candidates. Maximal degree in co-relation 162981. Up to 7014 conditions per place. [2021-03-12 00:17:11,409 INFO L132 encePairwiseOnDemand]: 46/63 looper letters, 835 selfloop transitions, 231 changer transitions 51/1204 dead transitions. [2021-03-12 00:17:11,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 1204 transitions, 38217 flow [2021-03-12 00:17:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-12 00:17:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-03-12 00:17:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 997 transitions. [2021-03-12 00:17:11,411 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6593915343915344 [2021-03-12 00:17:11,411 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 997 transitions. [2021-03-12 00:17:11,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 997 transitions. [2021-03-12 00:17:11,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:11,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 997 transitions. [2021-03-12 00:17:11,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 41.541666666666664) internal successors, (997), 24 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:11,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 63.0) internal successors, (1575), 25 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:11,413 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 63.0) internal successors, (1575), 25 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:11,413 INFO L185 Difference]: Start difference. First operand has 531 places, 1061 transitions, 32072 flow. Second operand 24 states and 997 transitions. [2021-03-12 00:17:11,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 1204 transitions, 38217 flow [2021-03-12 00:17:17,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 1204 transitions, 37827 flow, removed 70 selfloop flow, removed 5 redundant places. [2021-03-12 00:17:17,261 INFO L241 Difference]: Finished difference. Result has 562 places, 1082 transitions, 33157 flow [2021-03-12 00:17:17,262 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=31552, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=33157, PETRI_PLACES=562, PETRI_TRANSITIONS=1082} [2021-03-12 00:17:17,262 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 514 predicate places. [2021-03-12 00:17:17,262 INFO L480 AbstractCegarLoop]: Abstraction has has 562 places, 1082 transitions, 33157 flow [2021-03-12 00:17:17,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:17,262 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:17,262 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:17,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-12 00:17:17,262 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:17:17,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:17,263 INFO L82 PathProgramCache]: Analyzing trace with hash -743501432, now seen corresponding path program 41 times [2021-03-12 00:17:17,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:17,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257996631] [2021-03-12 00:17:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:17,282 INFO L142 QuantifierPusher]: treesize reduction 23, result has 42.5 percent of original size [2021-03-12 00:17:17,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:17:17,294 INFO L142 QuantifierPusher]: treesize reduction 29, result has 19.4 percent of original size [2021-03-12 00:17:17,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:17,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:17,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:17,302 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-12 00:17:17,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:17:17,310 INFO L142 QuantifierPusher]: treesize reduction 14, result has 62.2 percent of original size [2021-03-12 00:17:17,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-12 00:17:17,314 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-12 00:17:17,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:17:17,324 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-12 00:17:17,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:17,330 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:17:17,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:17,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:17,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:17,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257996631] [2021-03-12 00:17:17,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:17,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:17:17,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22596899] [2021-03-12 00:17:17,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:17:17,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:17,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:17:17,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:17:17,338 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 63 [2021-03-12 00:17:17,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 1082 transitions, 33157 flow. Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:17,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:17,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 63 [2021-03-12 00:17:17,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:24,599 INFO L129 PetriNetUnfolder]: 3195/15273 cut-off events. [2021-03-12 00:17:24,599 INFO L130 PetriNetUnfolder]: For 827999/831051 co-relation queries the response was YES. [2021-03-12 00:17:24,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154914 conditions, 15273 events. 3195/15273 cut-off events. For 827999/831051 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 214135 event pairs, 1108 based on Foata normal form. 598/15348 useless extension candidates. Maximal degree in co-relation 153599. Up to 3311 conditions per place. [2021-03-12 00:17:24,848 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 407 selfloop transitions, 310 changer transitions 58/1084 dead transitions. [2021-03-12 00:17:24,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 1084 transitions, 34652 flow [2021-03-12 00:17:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:17:24,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:17:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2021-03-12 00:17:24,849 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7188208616780045 [2021-03-12 00:17:24,849 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 317 transitions. [2021-03-12 00:17:24,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 317 transitions. [2021-03-12 00:17:24,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:24,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 317 transitions. [2021-03-12 00:17:24,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.285714285714285) internal successors, (317), 7 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:24,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:24,850 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:24,850 INFO L185 Difference]: Start difference. First operand has 562 places, 1082 transitions, 33157 flow. Second operand 7 states and 317 transitions. [2021-03-12 00:17:24,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 1084 transitions, 34652 flow [2021-03-12 00:17:30,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 1084 transitions, 34267 flow, removed 138 selfloop flow, removed 5 redundant places. [2021-03-12 00:17:30,608 INFO L241 Difference]: Finished difference. Result has 564 places, 1005 transitions, 31096 flow [2021-03-12 00:17:30,609 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=32096, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=750, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31096, PETRI_PLACES=564, PETRI_TRANSITIONS=1005} [2021-03-12 00:17:30,609 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 516 predicate places. [2021-03-12 00:17:30,609 INFO L480 AbstractCegarLoop]: Abstraction has has 564 places, 1005 transitions, 31096 flow [2021-03-12 00:17:30,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:30,609 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:30,609 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:30,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-12 00:17:30,609 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:17:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:30,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1983173636, now seen corresponding path program 42 times [2021-03-12 00:17:30,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:30,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602403246] [2021-03-12 00:17:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:30,626 INFO L142 QuantifierPusher]: treesize reduction 24, result has 33.3 percent of original size [2021-03-12 00:17:30,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:17:30,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:30,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:30,643 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-03-12 00:17:30,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-12 00:17:30,669 INFO L142 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-03-12 00:17:30,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:30,684 INFO L142 QuantifierPusher]: treesize reduction 16, result has 30.4 percent of original size [2021-03-12 00:17:30,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:30,684 INFO L142 QuantifierPusher]: treesize reduction 16, result has 30.4 percent of original size [2021-03-12 00:17:30,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:30,692 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-03-12 00:17:30,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:17:30,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:30,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:30,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602403246] [2021-03-12 00:17:30,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:30,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:17:30,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493189809] [2021-03-12 00:17:30,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:17:30,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:30,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:17:30,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:17:30,703 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:17:30,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 1005 transitions, 31096 flow. Second operand has 8 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) [2021-03-12 00:17:30,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:30,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:17:30,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:37,470 INFO L129 PetriNetUnfolder]: 2909/13542 cut-off events. [2021-03-12 00:17:37,470 INFO L130 PetriNetUnfolder]: For 771334/774621 co-relation queries the response was YES. [2021-03-12 00:17:37,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141855 conditions, 13542 events. 2909/13542 cut-off events. For 771334/774621 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 185346 event pairs, 920 based on Foata normal form. 1171/14254 useless extension candidates. Maximal degree in co-relation 140485. Up to 2308 conditions per place. [2021-03-12 00:17:37,705 INFO L132 encePairwiseOnDemand]: 48/63 looper letters, 437 selfloop transitions, 509 changer transitions 110/1111 dead transitions. [2021-03-12 00:17:37,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 1111 transitions, 36613 flow [2021-03-12 00:17:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-12 00:17:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-12 00:17:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 616 transitions. [2021-03-12 00:17:37,706 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2021-03-12 00:17:37,706 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 616 transitions. [2021-03-12 00:17:37,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 616 transitions. [2021-03-12 00:17:37,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:37,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 616 transitions. [2021-03-12 00:17:37,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 44.0) internal successors, (616), 14 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:37,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:37,708 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:37,708 INFO L185 Difference]: Start difference. First operand has 564 places, 1005 transitions, 31096 flow. Second operand 14 states and 616 transitions. [2021-03-12 00:17:37,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 1111 transitions, 36613 flow [2021-03-12 00:17:42,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 1111 transitions, 35716 flow, removed 123 selfloop flow, removed 12 redundant places. [2021-03-12 00:17:42,553 INFO L241 Difference]: Finished difference. Result has 567 places, 919 transitions, 29885 flow [2021-03-12 00:17:42,554 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=29762, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=29885, PETRI_PLACES=567, PETRI_TRANSITIONS=919} [2021-03-12 00:17:42,554 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 519 predicate places. [2021-03-12 00:17:42,554 INFO L480 AbstractCegarLoop]: Abstraction has has 567 places, 919 transitions, 29885 flow [2021-03-12 00:17:42,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 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) [2021-03-12 00:17:42,554 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:42,554 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:42,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-12 00:17:42,554 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:17:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash -648604238, now seen corresponding path program 43 times [2021-03-12 00:17:42,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:42,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511342081] [2021-03-12 00:17:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:42,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:17:42,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:42,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:42,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:17:42,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:17:42,591 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-12 00:17:42,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:17:42,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:17:42,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:42,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:42,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:42,627 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-12 00:17:42,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:17:42,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:42,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:42,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511342081] [2021-03-12 00:17:42,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:42,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:17:42,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65611194] [2021-03-12 00:17:42,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:17:42,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:42,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:17:42,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:17:42,637 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:17:42,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 919 transitions, 29885 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:42,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:42,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:17:42,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:48,486 INFO L129 PetriNetUnfolder]: 2605/12242 cut-off events. [2021-03-12 00:17:48,486 INFO L130 PetriNetUnfolder]: For 726420/729009 co-relation queries the response was YES. [2021-03-12 00:17:48,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129910 conditions, 12242 events. 2605/12242 cut-off events. For 726420/729009 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 165506 event pairs, 1172 based on Foata normal form. 350/12131 useless extension candidates. Maximal degree in co-relation 129232. Up to 5971 conditions per place. [2021-03-12 00:17:48,977 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 734 selfloop transitions, 120 changer transitions 65/974 dead transitions. [2021-03-12 00:17:48,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 974 transitions, 33024 flow [2021-03-12 00:17:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 00:17:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-12 00:17:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 545 transitions. [2021-03-12 00:17:48,978 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6654456654456654 [2021-03-12 00:17:48,978 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 545 transitions. [2021-03-12 00:17:48,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 545 transitions. [2021-03-12 00:17:48,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:48,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 545 transitions. [2021-03-12 00:17:48,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.92307692307692) internal successors, (545), 13 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:48,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:48,979 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:48,979 INFO L185 Difference]: Start difference. First operand has 567 places, 919 transitions, 29885 flow. Second operand 13 states and 545 transitions. [2021-03-12 00:17:48,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 974 transitions, 33024 flow [2021-03-12 00:17:53,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 974 transitions, 32526 flow, removed 141 selfloop flow, removed 8 redundant places. [2021-03-12 00:17:53,540 INFO L241 Difference]: Finished difference. Result has 569 places, 879 transitions, 28431 flow [2021-03-12 00:17:53,541 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=29309, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=28431, PETRI_PLACES=569, PETRI_TRANSITIONS=879} [2021-03-12 00:17:53,541 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 521 predicate places. [2021-03-12 00:17:53,541 INFO L480 AbstractCegarLoop]: Abstraction has has 569 places, 879 transitions, 28431 flow [2021-03-12 00:17:53,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:53,541 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:17:53,541 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:17:53,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-12 00:17:53,541 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:17:53,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:17:53,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1129999104, now seen corresponding path program 44 times [2021-03-12 00:17:53,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:17:53,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802775501] [2021-03-12 00:17:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:17:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:17:53,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:53,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:17:53,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:53,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:17:53,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:53,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:17:53,588 INFO L142 QuantifierPusher]: treesize reduction 27, result has 40.0 percent of original size [2021-03-12 00:17:53,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:17:53,602 INFO L142 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-03-12 00:17:53,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-12 00:17:53,619 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-12 00:17:53,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-12 00:17:53,637 INFO L142 QuantifierPusher]: treesize reduction 14, result has 66.7 percent of original size [2021-03-12 00:17:53,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-12 00:17:53,667 INFO L142 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-03-12 00:17:53,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:17:53,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:17:53,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:17:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:17:53,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802775501] [2021-03-12 00:17:53,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:17:53,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:17:53,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296941607] [2021-03-12 00:17:53,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:17:53,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:17:53,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:17:53,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:17:53,679 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:17:53,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 879 transitions, 28431 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:53,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:17:53,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:17:53,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:17:59,396 INFO L129 PetriNetUnfolder]: 2619/12093 cut-off events. [2021-03-12 00:17:59,396 INFO L130 PetriNetUnfolder]: For 750862/753712 co-relation queries the response was YES. [2021-03-12 00:17:59,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130344 conditions, 12093 events. 2619/12093 cut-off events. For 750862/753712 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 162189 event pairs, 853 based on Foata normal form. 1053/12705 useless extension candidates. Maximal degree in co-relation 129469. Up to 2107 conditions per place. [2021-03-12 00:17:59,600 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 316 selfloop transitions, 527 changer transitions 74/972 dead transitions. [2021-03-12 00:17:59,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 972 transitions, 33031 flow [2021-03-12 00:17:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:17:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:17:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 489 transitions. [2021-03-12 00:17:59,601 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2021-03-12 00:17:59,601 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 489 transitions. [2021-03-12 00:17:59,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 489 transitions. [2021-03-12 00:17:59,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:17:59,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 489 transitions. [2021-03-12 00:17:59,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 44.45454545454545) internal successors, (489), 11 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:59,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:59,602 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 63.0) internal successors, (756), 12 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:17:59,602 INFO L185 Difference]: Start difference. First operand has 569 places, 879 transitions, 28431 flow. Second operand 11 states and 489 transitions. [2021-03-12 00:17:59,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 972 transitions, 33031 flow [2021-03-12 00:18:04,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 972 transitions, 32733 flow, removed 59 selfloop flow, removed 9 redundant places. [2021-03-12 00:18:04,285 INFO L241 Difference]: Finished difference. Result has 575 places, 847 transitions, 28843 flow [2021-03-12 00:18:04,286 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27961, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=503, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=28843, PETRI_PLACES=575, PETRI_TRANSITIONS=847} [2021-03-12 00:18:04,286 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 527 predicate places. [2021-03-12 00:18:04,286 INFO L480 AbstractCegarLoop]: Abstraction has has 575 places, 847 transitions, 28843 flow [2021-03-12 00:18:04,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:04,287 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:04,287 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:04,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-12 00:18:04,287 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:18:04,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:04,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1460618968, now seen corresponding path program 45 times [2021-03-12 00:18:04,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:04,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428951738] [2021-03-12 00:18:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:04,316 INFO L142 QuantifierPusher]: treesize reduction 22, result has 48.8 percent of original size [2021-03-12 00:18:04,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:04,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:04,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:04,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:04,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:18:04,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:04,376 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-12 00:18:04,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:18:04,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:04,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:04,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:04,416 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-12 00:18:04,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:18:04,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:04,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:18:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:04,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428951738] [2021-03-12 00:18:04,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:04,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:18:04,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117843478] [2021-03-12 00:18:04,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:18:04,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:04,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:18:04,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:18:04,433 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:18:04,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 847 transitions, 28843 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:04,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:04,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:18:04,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:09,977 INFO L129 PetriNetUnfolder]: 2500/11761 cut-off events. [2021-03-12 00:18:09,977 INFO L130 PetriNetUnfolder]: For 776398/778914 co-relation queries the response was YES. [2021-03-12 00:18:10,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130197 conditions, 11761 events. 2500/11761 cut-off events. For 776398/778914 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 158048 event pairs, 1135 based on Foata normal form. 354/11676 useless extension candidates. Maximal degree in co-relation 129977. Up to 5675 conditions per place. [2021-03-12 00:18:10,189 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 720 selfloop transitions, 110 changer transitions 20/905 dead transitions. [2021-03-12 00:18:10,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 905 transitions, 32260 flow [2021-03-12 00:18:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:18:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:18:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2021-03-12 00:18:10,190 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2021-03-12 00:18:10,190 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 426 transitions. [2021-03-12 00:18:10,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 426 transitions. [2021-03-12 00:18:10,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:10,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 426 transitions. [2021-03-12 00:18:10,191 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) [2021-03-12 00:18:10,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:10,192 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:10,192 INFO L185 Difference]: Start difference. First operand has 575 places, 847 transitions, 28843 flow. Second operand 10 states and 426 transitions. [2021-03-12 00:18:10,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 905 transitions, 32260 flow [2021-03-12 00:18:15,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 905 transitions, 31723 flow, removed 198 selfloop flow, removed 14 redundant places. [2021-03-12 00:18:15,120 INFO L241 Difference]: Finished difference. Result has 560 places, 857 transitions, 29156 flow [2021-03-12 00:18:15,121 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=28224, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=29156, PETRI_PLACES=560, PETRI_TRANSITIONS=857} [2021-03-12 00:18:15,121 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 512 predicate places. [2021-03-12 00:18:15,121 INFO L480 AbstractCegarLoop]: Abstraction has has 560 places, 857 transitions, 29156 flow [2021-03-12 00:18:15,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:15,121 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:15,122 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:15,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-12 00:18:15,122 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:18:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash 5912634, now seen corresponding path program 46 times [2021-03-12 00:18:15,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:15,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005015724] [2021-03-12 00:18:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:15,138 INFO L142 QuantifierPusher]: treesize reduction 21, result has 43.2 percent of original size [2021-03-12 00:18:15,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:15,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:15,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:15,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:15,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:18:15,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:15,186 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-12 00:18:15,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:18:15,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:15,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:15,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:15,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:18:15,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:15,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:18:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:15,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005015724] [2021-03-12 00:18:15,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:15,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:18:15,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715481084] [2021-03-12 00:18:15,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:18:15,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:15,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:18:15,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:18:15,229 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:18:15,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 857 transitions, 29156 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:15,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:15,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:18:15,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:20,424 INFO L129 PetriNetUnfolder]: 2368/11218 cut-off events. [2021-03-12 00:18:20,424 INFO L130 PetriNetUnfolder]: For 744539/746949 co-relation queries the response was YES. [2021-03-12 00:18:20,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124917 conditions, 11218 events. 2368/11218 cut-off events. For 744539/746949 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 149710 event pairs, 1099 based on Foata normal form. 338/11139 useless extension candidates. Maximal degree in co-relation 124702. Up to 5648 conditions per place. [2021-03-12 00:18:20,897 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 702 selfloop transitions, 81 changer transitions 39/877 dead transitions. [2021-03-12 00:18:20,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 877 transitions, 31166 flow [2021-03-12 00:18:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:18:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:18:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2021-03-12 00:18:20,898 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2021-03-12 00:18:20,898 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 426 transitions. [2021-03-12 00:18:20,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 426 transitions. [2021-03-12 00:18:20,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:20,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 426 transitions. [2021-03-12 00:18:20,899 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) [2021-03-12 00:18:20,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:20,900 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:20,900 INFO L185 Difference]: Start difference. First operand has 560 places, 857 transitions, 29156 flow. Second operand 10 states and 426 transitions. [2021-03-12 00:18:20,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 877 transitions, 31166 flow [2021-03-12 00:18:25,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 877 transitions, 30843 flow, removed 94 selfloop flow, removed 7 redundant places. [2021-03-12 00:18:25,196 INFO L241 Difference]: Finished difference. Result has 561 places, 820 transitions, 27765 flow [2021-03-12 00:18:25,196 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=28348, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27765, PETRI_PLACES=561, PETRI_TRANSITIONS=820} [2021-03-12 00:18:25,196 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 513 predicate places. [2021-03-12 00:18:25,197 INFO L480 AbstractCegarLoop]: Abstraction has has 561 places, 820 transitions, 27765 flow [2021-03-12 00:18:25,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:25,197 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:25,197 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:25,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-12 00:18:25,197 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:18:25,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:25,197 INFO L82 PathProgramCache]: Analyzing trace with hash 56916866, now seen corresponding path program 47 times [2021-03-12 00:18:25,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:25,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645291927] [2021-03-12 00:18:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:25,212 INFO L142 QuantifierPusher]: treesize reduction 21, result has 43.2 percent of original size [2021-03-12 00:18:25,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:25,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:25,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:25,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:25,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:18:25,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:25,264 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-12 00:18:25,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:18:25,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:25,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:25,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:25,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:25,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:25,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:18:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:25,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645291927] [2021-03-12 00:18:25,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:25,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:18:25,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267267001] [2021-03-12 00:18:25,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:18:25,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:18:25,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:18:25,315 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:18:25,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 820 transitions, 27765 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:25,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:25,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:18:25,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:30,123 INFO L129 PetriNetUnfolder]: 2263/10798 cut-off events. [2021-03-12 00:18:30,123 INFO L130 PetriNetUnfolder]: For 707290/709605 co-relation queries the response was YES. [2021-03-12 00:18:30,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119495 conditions, 10798 events. 2263/10798 cut-off events. For 707290/709605 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 143283 event pairs, 1088 based on Foata normal form. 281/10674 useless extension candidates. Maximal degree in co-relation 119282. Up to 5610 conditions per place. [2021-03-12 00:18:30,586 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 673 selfloop transitions, 48 changer transitions 55/831 dead transitions. [2021-03-12 00:18:30,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 831 transitions, 29380 flow [2021-03-12 00:18:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:18:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:18:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 381 transitions. [2021-03-12 00:18:30,588 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.671957671957672 [2021-03-12 00:18:30,588 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 381 transitions. [2021-03-12 00:18:30,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 381 transitions. [2021-03-12 00:18:30,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:30,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 381 transitions. [2021-03-12 00:18:30,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 42.333333333333336) internal successors, (381), 9 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:30,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:30,589 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:30,589 INFO L185 Difference]: Start difference. First operand has 561 places, 820 transitions, 27765 flow. Second operand 9 states and 381 transitions. [2021-03-12 00:18:30,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 831 transitions, 29380 flow [2021-03-12 00:18:34,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 831 transitions, 29190 flow, removed 32 selfloop flow, removed 11 redundant places. [2021-03-12 00:18:34,402 INFO L241 Difference]: Finished difference. Result has 556 places, 770 transitions, 26012 flow [2021-03-12 00:18:34,402 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27012, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=758, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26012, PETRI_PLACES=556, PETRI_TRANSITIONS=770} [2021-03-12 00:18:34,402 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 508 predicate places. [2021-03-12 00:18:34,402 INFO L480 AbstractCegarLoop]: Abstraction has has 556 places, 770 transitions, 26012 flow [2021-03-12 00:18:34,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:34,403 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:34,403 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:34,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-12 00:18:34,403 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:18:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:34,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1199340012, now seen corresponding path program 48 times [2021-03-12 00:18:34,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:34,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362978880] [2021-03-12 00:18:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:34,429 INFO L142 QuantifierPusher]: treesize reduction 22, result has 48.8 percent of original size [2021-03-12 00:18:34,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-12 00:18:34,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:34,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:34,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:34,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:18:34,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:34,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:18:34,497 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-03-12 00:18:34,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:18:34,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:34,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:34,529 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-12 00:18:34,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:18:34,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:34,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:18:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:34,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362978880] [2021-03-12 00:18:34,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:34,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:18:34,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198562794] [2021-03-12 00:18:34,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:18:34,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:34,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:18:34,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:18:34,544 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:18:34,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 770 transitions, 26012 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:34,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:34,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:18:34,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:39,181 INFO L129 PetriNetUnfolder]: 2117/10265 cut-off events. [2021-03-12 00:18:39,182 INFO L130 PetriNetUnfolder]: For 666663/668882 co-relation queries the response was YES. [2021-03-12 00:18:39,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113271 conditions, 10265 events. 2117/10265 cut-off events. For 666663/668882 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 135654 event pairs, 1002 based on Foata normal form. 320/10215 useless extension candidates. Maximal degree in co-relation 113060. Up to 5210 conditions per place. [2021-03-12 00:18:39,366 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 631 selfloop transitions, 105 changer transitions 4/795 dead transitions. [2021-03-12 00:18:39,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 795 transitions, 28233 flow [2021-03-12 00:18:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-12 00:18:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-12 00:18:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 549 transitions. [2021-03-12 00:18:39,367 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2021-03-12 00:18:39,367 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 549 transitions. [2021-03-12 00:18:39,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 549 transitions. [2021-03-12 00:18:39,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:39,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 549 transitions. [2021-03-12 00:18:39,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 39.214285714285715) internal successors, (549), 14 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:39,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:39,368 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:39,368 INFO L185 Difference]: Start difference. First operand has 556 places, 770 transitions, 26012 flow. Second operand 14 states and 549 transitions. [2021-03-12 00:18:39,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 795 transitions, 28233 flow [2021-03-12 00:18:42,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 795 transitions, 27737 flow, removed 99 selfloop flow, removed 13 redundant places. [2021-03-12 00:18:42,895 INFO L241 Difference]: Finished difference. Result has 543 places, 774 transitions, 25955 flow [2021-03-12 00:18:42,895 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=25427, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=25955, PETRI_PLACES=543, PETRI_TRANSITIONS=774} [2021-03-12 00:18:42,895 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 495 predicate places. [2021-03-12 00:18:42,895 INFO L480 AbstractCegarLoop]: Abstraction has has 543 places, 774 transitions, 25955 flow [2021-03-12 00:18:42,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:42,895 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:42,895 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:42,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-12 00:18:42,896 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:18:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:42,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1395210284, now seen corresponding path program 49 times [2021-03-12 00:18:42,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:42,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85580202] [2021-03-12 00:18:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:42,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:18:42,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:42,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:42,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:18:42,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:18:42,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:18:42,954 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-12 00:18:42,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:42,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:42,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:18:42,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:42,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:18:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:42,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85580202] [2021-03-12 00:18:42,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:42,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:18:42,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3157648] [2021-03-12 00:18:42,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:18:42,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:42,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:18:42,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:18:42,983 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:18:42,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 774 transitions, 25955 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:42,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:42,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:18:42,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:48,760 INFO L129 PetriNetUnfolder]: 2350/11166 cut-off events. [2021-03-12 00:18:48,760 INFO L130 PetriNetUnfolder]: For 709185/711606 co-relation queries the response was YES. [2021-03-12 00:18:48,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121993 conditions, 11166 events. 2350/11166 cut-off events. For 709185/711606 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 149629 event pairs, 847 based on Foata normal form. 597/11357 useless extension candidates. Maximal degree in co-relation 121787. Up to 4195 conditions per place. [2021-03-12 00:18:48,942 INFO L132 encePairwiseOnDemand]: 49/63 looper letters, 559 selfloop transitions, 196 changer transitions 127/937 dead transitions. [2021-03-12 00:18:48,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 937 transitions, 33222 flow [2021-03-12 00:18:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:18:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:18:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 439 transitions. [2021-03-12 00:18:48,944 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6968253968253968 [2021-03-12 00:18:48,944 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 439 transitions. [2021-03-12 00:18:48,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 439 transitions. [2021-03-12 00:18:48,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:48,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 439 transitions. [2021-03-12 00:18:48,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.9) internal successors, (439), 10 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:48,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:48,945 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 63.0) internal successors, (693), 11 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:48,945 INFO L185 Difference]: Start difference. First operand has 543 places, 774 transitions, 25955 flow. Second operand 10 states and 439 transitions. [2021-03-12 00:18:48,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 937 transitions, 33222 flow [2021-03-12 00:18:52,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 937 transitions, 32708 flow, removed 113 selfloop flow, removed 16 redundant places. [2021-03-12 00:18:52,832 INFO L241 Difference]: Finished difference. Result has 542 places, 713 transitions, 24222 flow [2021-03-12 00:18:52,832 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=24298, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24222, PETRI_PLACES=542, PETRI_TRANSITIONS=713} [2021-03-12 00:18:52,832 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 494 predicate places. [2021-03-12 00:18:52,833 INFO L480 AbstractCegarLoop]: Abstraction has has 542 places, 713 transitions, 24222 flow [2021-03-12 00:18:52,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:52,833 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:18:52,833 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:18:52,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-12 00:18:52,833 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:18:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:18:52,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1641801466, now seen corresponding path program 50 times [2021-03-12 00:18:52,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:18:52,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072173045] [2021-03-12 00:18:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:18:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:18:52,848 INFO L142 QuantifierPusher]: treesize reduction 21, result has 43.2 percent of original size [2021-03-12 00:18:52,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:52,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:52,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:52,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:18:52,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-12 00:18:52,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:18:52,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:18:52,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:18:52,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:52,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:18:52,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:18:52,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:18:52,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:18:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:18:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072173045] [2021-03-12 00:18:52,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:18:52,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:18:52,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138884295] [2021-03-12 00:18:52,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:18:52,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:18:52,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:18:52,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:18:52,953 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:18:52,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 713 transitions, 24222 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:52,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:18:52,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:18:52,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:18:57,060 INFO L129 PetriNetUnfolder]: 2033/9793 cut-off events. [2021-03-12 00:18:57,060 INFO L130 PetriNetUnfolder]: For 639088/641653 co-relation queries the response was YES. [2021-03-12 00:18:57,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108283 conditions, 9793 events. 2033/9793 cut-off events. For 639088/641653 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 128052 event pairs, 962 based on Foata normal form. 312/9751 useless extension candidates. Maximal degree in co-relation 108075. Up to 5106 conditions per place. [2021-03-12 00:18:57,221 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 608 selfloop transitions, 31 changer transitions 27/721 dead transitions. [2021-03-12 00:18:57,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 721 transitions, 25768 flow [2021-03-12 00:18:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:18:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:18:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 366 transitions. [2021-03-12 00:18:57,223 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6455026455026455 [2021-03-12 00:18:57,223 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 366 transitions. [2021-03-12 00:18:57,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 366 transitions. [2021-03-12 00:18:57,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:18:57,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 366 transitions. [2021-03-12 00:18:57,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.666666666666664) internal successors, (366), 9 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:57,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:57,224 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:18:57,224 INFO L185 Difference]: Start difference. First operand has 542 places, 713 transitions, 24222 flow. Second operand 9 states and 366 transitions. [2021-03-12 00:18:57,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 721 transitions, 25768 flow [2021-03-12 00:19:00,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 721 transitions, 25456 flow, removed 72 selfloop flow, removed 7 redundant places. [2021-03-12 00:19:00,818 INFO L241 Difference]: Finished difference. Result has 536 places, 683 transitions, 23068 flow [2021-03-12 00:19:00,818 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=23593, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23068, PETRI_PLACES=536, PETRI_TRANSITIONS=683} [2021-03-12 00:19:00,818 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 488 predicate places. [2021-03-12 00:19:00,818 INFO L480 AbstractCegarLoop]: Abstraction has has 536 places, 683 transitions, 23068 flow [2021-03-12 00:19:00,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:00,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:00,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:00,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-12 00:19:00,819 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:19:00,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:00,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1809251956, now seen corresponding path program 51 times [2021-03-12 00:19:00,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:00,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040040476] [2021-03-12 00:19:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:00,833 INFO L142 QuantifierPusher]: treesize reduction 21, result has 43.2 percent of original size [2021-03-12 00:19:00,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:19:00,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:19:00,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:19:00,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:19:00,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:00,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:19:00,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-12 00:19:00,903 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-03-12 00:19:00,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:00,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:00,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:00,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:00,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:19:00,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:00,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:19:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:00,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040040476] [2021-03-12 00:19:00,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:00,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-12 00:19:00,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464323920] [2021-03-12 00:19:00,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 00:19:00,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:00,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 00:19:00,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-03-12 00:19:00,969 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:19:00,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 683 transitions, 23068 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:00,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:00,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:19:00,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:04,344 INFO L129 PetriNetUnfolder]: 1545/7514 cut-off events. [2021-03-12 00:19:04,344 INFO L130 PetriNetUnfolder]: For 469249/470680 co-relation queries the response was YES. [2021-03-12 00:19:04,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81508 conditions, 7514 events. 1545/7514 cut-off events. For 469249/470680 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 94701 event pairs, 553 based on Foata normal form. 512/7738 useless extension candidates. Maximal degree in co-relation 81305. Up to 1799 conditions per place. [2021-03-12 00:19:04,465 INFO L132 encePairwiseOnDemand]: 45/63 looper letters, 275 selfloop transitions, 142 changer transitions 270/731 dead transitions. [2021-03-12 00:19:04,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 731 transitions, 25543 flow [2021-03-12 00:19:04,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-12 00:19:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-12 00:19:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 789 transitions. [2021-03-12 00:19:04,466 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6591478696741855 [2021-03-12 00:19:04,466 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 789 transitions. [2021-03-12 00:19:04,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 789 transitions. [2021-03-12 00:19:04,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:04,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 789 transitions. [2021-03-12 00:19:04,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 41.526315789473685) internal successors, (789), 19 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:04,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:04,468 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:04,468 INFO L185 Difference]: Start difference. First operand has 536 places, 683 transitions, 23068 flow. Second operand 19 states and 789 transitions. [2021-03-12 00:19:04,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 731 transitions, 25543 flow [2021-03-12 00:19:07,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 731 transitions, 25072 flow, removed 62 selfloop flow, removed 16 redundant places. [2021-03-12 00:19:07,106 INFO L241 Difference]: Finished difference. Result has 546 places, 436 transitions, 14516 flow [2021-03-12 00:19:07,106 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20256, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14516, PETRI_PLACES=546, PETRI_TRANSITIONS=436} [2021-03-12 00:19:07,107 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 498 predicate places. [2021-03-12 00:19:07,107 INFO L480 AbstractCegarLoop]: Abstraction has has 546 places, 436 transitions, 14516 flow [2021-03-12 00:19:07,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:07,107 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:07,107 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:07,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-12 00:19:07,107 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:19:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:07,107 INFO L82 PathProgramCache]: Analyzing trace with hash -648909220, now seen corresponding path program 52 times [2021-03-12 00:19:07,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:07,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601066209] [2021-03-12 00:19:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:07,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:07,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:07,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:07,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:19:07,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:19:07,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:19:07,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:19:07,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:19:07,162 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-12 00:19:07,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:07,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:19:07,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:07,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:19:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:07,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601066209] [2021-03-12 00:19:07,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:07,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:19:07,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004834509] [2021-03-12 00:19:07,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:19:07,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:07,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:19:07,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:19:07,180 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:19:07,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 436 transitions, 14516 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:07,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:07,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:19:07,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:08,855 INFO L129 PetriNetUnfolder]: 894/4570 cut-off events. [2021-03-12 00:19:08,856 INFO L130 PetriNetUnfolder]: For 311776/312772 co-relation queries the response was YES. [2021-03-12 00:19:08,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51953 conditions, 4570 events. 894/4570 cut-off events. For 311776/312772 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 52347 event pairs, 401 based on Foata normal form. 102/4540 useless extension candidates. Maximal degree in co-relation 51748. Up to 2501 conditions per place. [2021-03-12 00:19:08,947 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 380 selfloop transitions, 9 changer transitions 18/451 dead transitions. [2021-03-12 00:19:08,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 451 transitions, 15710 flow [2021-03-12 00:19:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:19:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:19:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 358 transitions. [2021-03-12 00:19:08,948 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6313932980599647 [2021-03-12 00:19:08,948 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 358 transitions. [2021-03-12 00:19:08,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 358 transitions. [2021-03-12 00:19:08,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:08,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 358 transitions. [2021-03-12 00:19:08,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.77777777777778) internal successors, (358), 9 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:08,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:08,950 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:08,950 INFO L185 Difference]: Start difference. First operand has 546 places, 436 transitions, 14516 flow. Second operand 9 states and 358 transitions. [2021-03-12 00:19:08,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 451 transitions, 15710 flow [2021-03-12 00:19:10,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 451 transitions, 13782 flow, removed 390 selfloop flow, removed 57 redundant places. [2021-03-12 00:19:10,218 INFO L241 Difference]: Finished difference. Result has 460 places, 430 transitions, 12543 flow [2021-03-12 00:19:10,218 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12682, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12543, PETRI_PLACES=460, PETRI_TRANSITIONS=430} [2021-03-12 00:19:10,218 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 412 predicate places. [2021-03-12 00:19:10,218 INFO L480 AbstractCegarLoop]: Abstraction has has 460 places, 430 transitions, 12543 flow [2021-03-12 00:19:10,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:10,218 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:10,219 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:10,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-12 00:19:10,219 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:19:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:10,219 INFO L82 PathProgramCache]: Analyzing trace with hash -429455696, now seen corresponding path program 53 times [2021-03-12 00:19:10,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:10,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884319312] [2021-03-12 00:19:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:10,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:10,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:10,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:10,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-12 00:19:10,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:19:10,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:10,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:10,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:10,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:10,296 INFO L142 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-03-12 00:19:10,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:10,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:10,312 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-12 00:19:10,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:19:10,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:10,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:19:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:10,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884319312] [2021-03-12 00:19:10,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:10,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-12 00:19:10,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609341138] [2021-03-12 00:19:10,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:19:10,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:10,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:19:10,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:19:10,324 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:19:10,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 430 transitions, 12543 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:10,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:10,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:19:10,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:11,652 INFO L129 PetriNetUnfolder]: 881/4495 cut-off events. [2021-03-12 00:19:11,652 INFO L130 PetriNetUnfolder]: For 219228/220101 co-relation queries the response was YES. [2021-03-12 00:19:11,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44148 conditions, 4495 events. 881/4495 cut-off events. For 219228/220101 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 51310 event pairs, 384 based on Foata normal form. 99/4467 useless extension candidates. Maximal degree in co-relation 43978. Up to 2455 conditions per place. [2021-03-12 00:19:11,721 INFO L132 encePairwiseOnDemand]: 53/63 looper letters, 370 selfloop transitions, 6 changer transitions 23/443 dead transitions. [2021-03-12 00:19:11,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 443 transitions, 13613 flow [2021-03-12 00:19:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:19:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:19:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 356 transitions. [2021-03-12 00:19:11,722 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6278659611992945 [2021-03-12 00:19:11,723 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 356 transitions. [2021-03-12 00:19:11,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 356 transitions. [2021-03-12 00:19:11,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:11,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 356 transitions. [2021-03-12 00:19:11,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.55555555555556) internal successors, (356), 9 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:11,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:11,724 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:11,724 INFO L185 Difference]: Start difference. First operand has 460 places, 430 transitions, 12543 flow. Second operand 9 states and 356 transitions. [2021-03-12 00:19:11,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 443 transitions, 13613 flow [2021-03-12 00:19:12,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 443 transitions, 13412 flow, removed 87 selfloop flow, removed 12 redundant places. [2021-03-12 00:19:12,648 INFO L241 Difference]: Finished difference. Result has 451 places, 418 transitions, 12048 flow [2021-03-12 00:19:12,648 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12295, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12048, PETRI_PLACES=451, PETRI_TRANSITIONS=418} [2021-03-12 00:19:12,648 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 403 predicate places. [2021-03-12 00:19:12,648 INFO L480 AbstractCegarLoop]: Abstraction has has 451 places, 418 transitions, 12048 flow [2021-03-12 00:19:12,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:12,649 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:12,649 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:12,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-12 00:19:12,649 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:19:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1285688934, now seen corresponding path program 54 times [2021-03-12 00:19:12,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:12,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512826741] [2021-03-12 00:19:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:12,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:12,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:12,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:12,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:12,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:12,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:12,693 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-03-12 00:19:12,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-12 00:19:12,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:12,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:12,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:12,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:12,712 INFO L142 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size [2021-03-12 00:19:12,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:19:12,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:12,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:12,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:12,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-12 00:19:12,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:12,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:19:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:12,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512826741] [2021-03-12 00:19:12,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:12,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:19:12,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992117959] [2021-03-12 00:19:12,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:19:12,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:12,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:19:12,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:19:12,744 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:19:12,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 418 transitions, 12048 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:12,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:12,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:19:12,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:14,259 INFO L129 PetriNetUnfolder]: 989/4862 cut-off events. [2021-03-12 00:19:14,259 INFO L130 PetriNetUnfolder]: For 227218/228095 co-relation queries the response was YES. [2021-03-12 00:19:14,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46951 conditions, 4862 events. 989/4862 cut-off events. For 227218/228095 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 56103 event pairs, 175 based on Foata normal form. 459/5214 useless extension candidates. Maximal degree in co-relation 46787. Up to 607 conditions per place. [2021-03-12 00:19:14,339 INFO L132 encePairwiseOnDemand]: 47/63 looper letters, 184 selfloop transitions, 286 changer transitions 24/538 dead transitions. [2021-03-12 00:19:14,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 538 transitions, 16121 flow [2021-03-12 00:19:14,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-12 00:19:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-12 00:19:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 593 transitions. [2021-03-12 00:19:14,340 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6723356009070295 [2021-03-12 00:19:14,340 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 593 transitions. [2021-03-12 00:19:14,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 593 transitions. [2021-03-12 00:19:14,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:14,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 593 transitions. [2021-03-12 00:19:14,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 42.357142857142854) internal successors, (593), 14 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:14,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:14,342 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:14,342 INFO L185 Difference]: Start difference. First operand has 451 places, 418 transitions, 12048 flow. Second operand 14 states and 593 transitions. [2021-03-12 00:19:14,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 538 transitions, 16121 flow [2021-03-12 00:19:15,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 538 transitions, 15662 flow, removed 48 selfloop flow, removed 15 redundant places. [2021-03-12 00:19:15,386 INFO L241 Difference]: Finished difference. Result has 443 places, 471 transitions, 13937 flow [2021-03-12 00:19:15,387 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11712, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13937, PETRI_PLACES=443, PETRI_TRANSITIONS=471} [2021-03-12 00:19:15,387 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 395 predicate places. [2021-03-12 00:19:15,387 INFO L480 AbstractCegarLoop]: Abstraction has has 443 places, 471 transitions, 13937 flow [2021-03-12 00:19:15,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:15,387 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:15,387 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:15,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-12 00:19:15,387 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:19:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:15,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1573504312, now seen corresponding path program 55 times [2021-03-12 00:19:15,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:15,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039368498] [2021-03-12 00:19:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:15,402 INFO L142 QuantifierPusher]: treesize reduction 19, result has 60.4 percent of original size [2021-03-12 00:19:15,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-12 00:19:15,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:15,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:15,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:15,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:15,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:15,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:15,443 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-12 00:19:15,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:15,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:15,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:19:15,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:15,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:19:15,458 INFO L142 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size [2021-03-12 00:19:15,459 INFO L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-03-12 00:19:15,470 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-12 00:19:15,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:19:15,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:15,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:19:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:15,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039368498] [2021-03-12 00:19:15,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:15,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:19:15,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422220690] [2021-03-12 00:19:15,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:19:15,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:15,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:19:15,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:19:15,480 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:19:15,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 471 transitions, 13937 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:15,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:15,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:19:15,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:17,186 INFO L129 PetriNetUnfolder]: 974/4791 cut-off events. [2021-03-12 00:19:17,186 INFO L130 PetriNetUnfolder]: For 230026/231040 co-relation queries the response was YES. [2021-03-12 00:19:17,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47901 conditions, 4791 events. 974/4791 cut-off events. For 230026/231040 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 55116 event pairs, 260 based on Foata normal form. 308/4974 useless extension candidates. Maximal degree in co-relation 47740. Up to 1484 conditions per place. [2021-03-12 00:19:17,245 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 300 selfloop transitions, 142 changer transitions 17/498 dead transitions. [2021-03-12 00:19:17,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 498 transitions, 15626 flow [2021-03-12 00:19:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 00:19:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-12 00:19:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 539 transitions. [2021-03-12 00:19:17,246 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2021-03-12 00:19:17,246 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 539 transitions. [2021-03-12 00:19:17,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 539 transitions. [2021-03-12 00:19:17,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:17,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 539 transitions. [2021-03-12 00:19:17,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.46153846153846) internal successors, (539), 13 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:17,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:17,247 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 63.0) internal successors, (882), 14 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:17,247 INFO L185 Difference]: Start difference. First operand has 443 places, 471 transitions, 13937 flow. Second operand 13 states and 539 transitions. [2021-03-12 00:19:17,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 498 transitions, 15626 flow [2021-03-12 00:19:18,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 498 transitions, 15297 flow, removed 142 selfloop flow, removed 6 redundant places. [2021-03-12 00:19:18,145 INFO L241 Difference]: Finished difference. Result has 448 places, 451 transitions, 13609 flow [2021-03-12 00:19:18,146 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13549, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13609, PETRI_PLACES=448, PETRI_TRANSITIONS=451} [2021-03-12 00:19:18,146 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 400 predicate places. [2021-03-12 00:19:18,146 INFO L480 AbstractCegarLoop]: Abstraction has has 448 places, 451 transitions, 13609 flow [2021-03-12 00:19:18,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:18,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:19:18,146 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:19:18,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-12 00:19:18,146 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:19:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:19:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash 824385728, now seen corresponding path program 56 times [2021-03-12 00:19:18,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:19:18,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665132195] [2021-03-12 00:19:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:19:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:19:18,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:18,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-12 00:19:18,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:18,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-12 00:19:18,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:18,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:19:18,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:18,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:18,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:18,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:19:18,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:18,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:19:18,207 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-12 00:19:18,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:19:18,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:18,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:19:18,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:19:18,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:19:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:19:18,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665132195] [2021-03-12 00:19:18,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:19:18,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:19:18,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648175420] [2021-03-12 00:19:18,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:19:18,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:19:18,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:19:18,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:19:18,224 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2021-03-12 00:19:18,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 451 transitions, 13609 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:18,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:19:18,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2021-03-12 00:19:18,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:19:18,969 INFO L129 PetriNetUnfolder]: 440/2053 cut-off events. [2021-03-12 00:19:18,969 INFO L130 PetriNetUnfolder]: For 92019/92216 co-relation queries the response was YES. [2021-03-12 00:19:18,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 2053 events. 440/2053 cut-off events. For 92019/92216 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 21417 event pairs, 178 based on Foata normal form. 132/2103 useless extension candidates. Maximal degree in co-relation 20684. Up to 339 conditions per place. [2021-03-12 00:19:18,998 INFO L132 encePairwiseOnDemand]: 51/63 looper letters, 0 selfloop transitions, 0 changer transitions 287/287 dead transitions. [2021-03-12 00:19:18,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 287 transitions, 9287 flow [2021-03-12 00:19:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-12 00:19:18,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-12 00:19:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 552 transitions. [2021-03-12 00:19:18,999 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6258503401360545 [2021-03-12 00:19:18,999 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 552 transitions. [2021-03-12 00:19:18,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 552 transitions. [2021-03-12 00:19:19,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:19:19,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 552 transitions. [2021-03-12 00:19:19,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 39.42857142857143) internal successors, (552), 14 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:19,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:19,001 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 63.0) internal successors, (945), 15 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:19,001 INFO L185 Difference]: Start difference. First operand has 448 places, 451 transitions, 13609 flow. Second operand 14 states and 552 transitions. [2021-03-12 00:19:19,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 287 transitions, 9287 flow [2021-03-12 00:19:19,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 287 transitions, 7233 flow, removed 87 selfloop flow, removed 100 redundant places. [2021-03-12 00:19:19,376 INFO L241 Difference]: Finished difference. Result has 332 places, 0 transitions, 0 flow [2021-03-12 00:19:19,376 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6143, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=332, PETRI_TRANSITIONS=0} [2021-03-12 00:19:19,376 INFO L335 CegarLoopForPetriNet]: 48 programPoint places, 284 predicate places. [2021-03-12 00:19:19,376 INFO L480 AbstractCegarLoop]: Abstraction has has 332 places, 0 transitions, 0 flow [2021-03-12 00:19:19,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:19:19,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-12 00:19:19,379 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 12:19:19 BasicIcfg [2021-03-12 00:19:19,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 00:19:19,380 INFO L168 Benchmark]: Toolchain (without parser) took 499327.24 ms. Allocated memory was 255.9 MB in the beginning and 15.7 GB in the end (delta: 15.5 GB). Free memory was 236.4 MB in the beginning and 13.1 GB in the end (delta: -12.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.0 GB. [2021-03-12 00:19:19,380 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:19:19,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.63 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:19:19,380 INFO L168 Benchmark]: Boogie Preprocessor took 18.63 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:19:19,380 INFO L168 Benchmark]: RCFGBuilder took 235.41 ms. Allocated memory is still 255.9 MB. Free memory was 233.4 MB in the beginning and 235.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.0 GB. [2021-03-12 00:19:19,381 INFO L168 Benchmark]: TraceAbstraction took 499043.28 ms. Allocated memory was 255.9 MB in the beginning and 15.7 GB in the end (delta: 15.5 GB). Free memory was 235.6 MB in the beginning and 13.1 GB in the end (delta: -12.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.0 GB. [2021-03-12 00:19:19,381 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 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.63 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.63 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 235.41 ms. Allocated memory is still 255.9 MB. Free memory was 233.4 MB in the beginning and 235.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 499043.28 ms. Allocated memory was 255.9 MB in the beginning and 15.7 GB in the end (delta: 15.5 GB). Free memory was 235.6 MB in the beginning and 13.1 GB in the end (delta: -12.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 549.0ms, 58 PlacesBefore, 48 PlacesAfterwards, 48 TransitionsBefore, 38 TransitionsAfterwards, 1170 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 2992 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1112, positive: 1003, positive conditional: 0, positive unconditional: 1003, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 751, positive: 668, positive conditional: 0, positive unconditional: 668, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 751, positive: 646, positive conditional: 0, positive unconditional: 646, negative: 105, negative conditional: 0, negative unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 105, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 338, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 287, negative conditional: 0, negative unconditional: 287, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1112, positive: 335, positive conditional: 0, positive unconditional: 335, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 751, unknown conditional: 0, unknown unconditional: 751] , Statistics on independence cache: Total cache size (in pairs): 426, Positive cache size: 375, Positive conditional cache size: 0, Positive unconditional cache size: 375, Negative cache size: 51, Negative conditional cache size: 0, Negative unconditional cache size: 51 - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 24.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 498967.8ms, OverallIterations: 56, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 491965.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 625.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 798 SDtfs, 2377 SDslu, 561 SDs, 0 SdLazy, 14655 SolverSat, 2226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7251.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 798 GetRequests, 114 SyntacticMatches, 46 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 7588.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45015occurred in iteration=34, InterpolantAutomatonStates: 641, 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: 43.6ms SsaConstructionTime, 339.8ms SatisfiabilityAnalysisTime, 5675.3ms InterpolantComputationTime, 2128 NumberOfCodeBlocks, 2128 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 2072 ConstructedInterpolants, 0 QuantifiedInterpolants, 13162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 56 InterpolantComputations, 56 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...