/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:34:06,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:34:06,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:34:06,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 00:34:06,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 00:34:06,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 00:34:06,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 00:34:06,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 00:34:06,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 00:34:06,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 00:34:06,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 00:34:06,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 00:34:06,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 00:34:06,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 00:34:06,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 00:34:06,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 00:34:06,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 00:34:06,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-12 00:34:06,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-12 00:34:06,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-12 00:34:06,861 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 00:34:06,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:34:06,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:34:06,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:34:06,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:34:06,888 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:34:06,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:34:06,888 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:34:06,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:34:06,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:34:06,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:34:06,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:34:06,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:34:06,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:34:06,889 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:34:06,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:34:06,889 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:34:06,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:34:06,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:34:06,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:34:06,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:34:06,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:34:06,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:34:06,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:34:06,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:34:06,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:34:06,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:34:06,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:34:06,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:34:06,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:34:07,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:34:07,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:34:07,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:34:07,116 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:34:07,118 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:34:07,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl [2021-03-12 00:34:07,121 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl' [2021-03-12 00:34:07,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:34:07,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:34:07,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:34:07,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:34:07,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:34:07,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:34:07,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:34:07,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:34:07,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:34:07,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/1) ... [2021-03-12 00:34:07,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:34:07,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:34:07,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:34:07,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:34:07,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (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 00:34:07,234 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:34:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:34:07,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:34:07,234 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:34:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:34:07,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:34:07,234 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:34:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:34:07,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:34:07,234 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 00:34:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 00:34:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 00:34:07,235 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-12 00:34:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-12 00:34:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-12 00:34:07,235 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-12 00:34:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-12 00:34:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-12 00:34:07,236 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-12 00:34:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-12 00:34:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-12 00:34:07,236 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-03-12 00:34:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-03-12 00:34:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-03-12 00:34:07,237 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 00:34:07,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:34:07,392 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:34:07,393 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:34:07 BoogieIcfgContainer [2021-03-12 00:34:07,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:34:07,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:34:07,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:34:07,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:34:07,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:34:07" (1/2) ... [2021-03-12 00:34:07,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73729953 and model type ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:34:07, skipping insertion in model container [2021-03-12 00:34:07,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:34:07" (2/2) ... [2021-03-12 00:34:07,398 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-7.wvr.bpl [2021-03-12 00:34:07,414 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:34:07,416 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:34:07,417 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:34:07,491 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-03-12 00:34:07,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-12 00:34:07,517 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:34:07,517 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:34:07,517 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:34:07,517 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:34:07,517 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:34:07,517 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:34:07,517 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:34:07,517 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:34:07,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 62 transitions, 180 flow [2021-03-12 00:34:07,553 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-03-12 00:34:07,553 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-12 00:34:07,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 55 events. 0/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 00:34:07,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 62 transitions, 180 flow [2021-03-12 00:34:07,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 53 transitions, 148 flow [2021-03-12 00:34:07,560 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:34:07,566 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 53 transitions, 148 flow [2021-03-12 00:34:07,568 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 53 transitions, 148 flow [2021-03-12 00:34:07,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 53 transitions, 148 flow [2021-03-12 00:34:07,583 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-03-12 00:34:07,583 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-12 00:34:07,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 0/53 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 152 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 00:34:07,585 INFO L116 LiptonReduction]: Number of co-enabled transitions 1542 [2021-03-12 00:34:08,911 INFO L131 LiptonReduction]: Checked pairs total: 2679 [2021-03-12 00:34:08,911 INFO L133 LiptonReduction]: Total number of compositions: 22 [2021-03-12 00:34:08,912 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1355 [2021-03-12 00:34:08,921 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-03-12 00:34:08,922 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-12 00:34:08,922 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:08,922 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] [2021-03-12 00:34:08,922 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:08,925 INFO L82 PathProgramCache]: Analyzing trace with hash 862839300, now seen corresponding path program 1 times [2021-03-12 00:34:08,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:08,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616691906] [2021-03-12 00:34:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:09,088 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-12 00:34:09,089 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-12 00:34:09,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:09,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:09,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:09,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:09,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:09,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:34:09,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:09,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:09,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:09,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:09,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:09,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:09,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:09,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:09,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:09,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:34:09,112 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 00:34:09,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616691906] [2021-03-12 00:34:09,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:09,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 00:34:09,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166604738] [2021-03-12 00:34:09,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:34:09,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:09,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:34:09,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:34:09,126 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2021-03-12 00:34:09,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:09,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:09,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2021-03-12 00:34:09,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:10,424 INFO L129 PetriNetUnfolder]: 15335/19975 cut-off events. [2021-03-12 00:34:10,424 INFO L130 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2021-03-12 00:34:10,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39966 conditions, 19975 events. 15335/19975 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 104455 event pairs, 7502 based on Foata normal form. 1/19888 useless extension candidates. Maximal degree in co-relation 39928. Up to 10206 conditions per place. [2021-03-12 00:34:10,531 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 33 selfloop transitions, 15 changer transitions 1/63 dead transitions. [2021-03-12 00:34:10,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 266 flow [2021-03-12 00:34:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:34:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:34:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 295 transitions. [2021-03-12 00:34:10,553 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2021-03-12 00:34:10,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 295 transitions. [2021-03-12 00:34:10,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 295 transitions. [2021-03-12 00:34:10,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:10,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 295 transitions. [2021-03-12 00:34:10,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:10,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:34:10,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:34:10,588 INFO L185 Difference]: Start difference. First operand has 53 places, 31 transitions, 104 flow. Second operand 5 states and 295 transitions. [2021-03-12 00:34:10,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 266 flow [2021-03-12 00:34:10,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 238 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-03-12 00:34:10,623 INFO L241 Difference]: Finished difference. Result has 46 places, 44 transitions, 185 flow [2021-03-12 00:34:10,624 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2021-03-12 00:34:10,625 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2021-03-12 00:34:10,647 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 185 flow [2021-03-12 00:34:10,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:10,647 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:10,648 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] [2021-03-12 00:34:10,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:34:10,648 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1588769292, now seen corresponding path program 2 times [2021-03-12 00:34:10,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:10,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088638969] [2021-03-12 00:34:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:10,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:10,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:10,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:10,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:10,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:10,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:10,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:10,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:10,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:10,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:10,719 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 00:34:10,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088638969] [2021-03-12 00:34:10,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:10,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:34:10,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602966055] [2021-03-12 00:34:10,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:34:10,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:10,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:34:10,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:34:10,722 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:34:10,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:10,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:10,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:34:10,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:13,551 INFO L129 PetriNetUnfolder]: 34489/45398 cut-off events. [2021-03-12 00:34:13,551 INFO L130 PetriNetUnfolder]: For 23421/26828 co-relation queries the response was YES. [2021-03-12 00:34:13,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140999 conditions, 45398 events. 34489/45398 cut-off events. For 23421/26828 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 265048 event pairs, 9597 based on Foata normal form. 858/46156 useless extension candidates. Maximal degree in co-relation 140073. Up to 22345 conditions per place. [2021-03-12 00:34:13,784 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 36 selfloop transitions, 53 changer transitions 0/104 dead transitions. [2021-03-12 00:34:13,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 626 flow [2021-03-12 00:34:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:34:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:34:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 307 transitions. [2021-03-12 00:34:13,790 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6091269841269841 [2021-03-12 00:34:13,790 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 307 transitions. [2021-03-12 00:34:13,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 307 transitions. [2021-03-12 00:34:13,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:13,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 307 transitions. [2021-03-12 00:34:13,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.166666666666664) internal successors, (307), 6 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:13,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:13,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:13,795 INFO L185 Difference]: Start difference. First operand has 46 places, 44 transitions, 185 flow. Second operand 6 states and 307 transitions. [2021-03-12 00:34:13,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 626 flow [2021-03-12 00:34:13,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 104 transitions, 578 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-12 00:34:13,808 INFO L241 Difference]: Finished difference. Result has 49 places, 89 transitions, 537 flow [2021-03-12 00:34:13,809 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=537, PETRI_PLACES=49, PETRI_TRANSITIONS=89} [2021-03-12 00:34:13,809 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2021-03-12 00:34:13,809 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 89 transitions, 537 flow [2021-03-12 00:34:13,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:13,809 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:13,809 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] [2021-03-12 00:34:13,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 00:34:13,810 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:13,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:13,810 INFO L82 PathProgramCache]: Analyzing trace with hash -575661360, now seen corresponding path program 3 times [2021-03-12 00:34:13,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:13,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182521033] [2021-03-12 00:34:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:13,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:13,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:13,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:13,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:13,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:13,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:13,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:13,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:13,869 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 00:34:13,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182521033] [2021-03-12 00:34:13,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:13,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:34:13,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225912874] [2021-03-12 00:34:13,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:34:13,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:13,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:34:13,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:34:13,871 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:34:13,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 89 transitions, 537 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:13,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:13,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:34:13,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:16,146 INFO L129 PetriNetUnfolder]: 35104/45875 cut-off events. [2021-03-12 00:34:16,146 INFO L130 PetriNetUnfolder]: For 45114/60295 co-relation queries the response was YES. [2021-03-12 00:34:16,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192980 conditions, 45875 events. 35104/45875 cut-off events. For 45114/60295 co-relation queries the response was YES. Maximal size of possible extension queue 2574. Compared 261551 event pairs, 6966 based on Foata normal form. 169/45912 useless extension candidates. Maximal degree in co-relation 192334. Up to 43859 conditions per place. [2021-03-12 00:34:16,514 INFO L132 encePairwiseOnDemand]: 70/84 looper letters, 86 selfloop transitions, 56 changer transitions 0/157 dead transitions. [2021-03-12 00:34:16,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 157 transitions, 1278 flow [2021-03-12 00:34:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:34:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:34:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2021-03-12 00:34:16,516 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2021-03-12 00:34:16,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 250 transitions. [2021-03-12 00:34:16,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 250 transitions. [2021-03-12 00:34:16,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:16,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 250 transitions. [2021-03-12 00:34:16,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:16,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:34:16,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:34:16,518 INFO L185 Difference]: Start difference. First operand has 49 places, 89 transitions, 537 flow. Second operand 5 states and 250 transitions. [2021-03-12 00:34:16,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 157 transitions, 1278 flow [2021-03-12 00:34:16,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 157 transitions, 1242 flow, removed 14 selfloop flow, removed 1 redundant places. [2021-03-12 00:34:16,543 INFO L241 Difference]: Finished difference. Result has 54 places, 137 transitions, 1085 flow [2021-03-12 00:34:16,543 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1085, PETRI_PLACES=54, PETRI_TRANSITIONS=137} [2021-03-12 00:34:16,543 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2021-03-12 00:34:16,543 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 137 transitions, 1085 flow [2021-03-12 00:34:16,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:16,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:16,544 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] [2021-03-12 00:34:16,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 00:34:16,544 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:16,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:16,544 INFO L82 PathProgramCache]: Analyzing trace with hash 710228062, now seen corresponding path program 4 times [2021-03-12 00:34:16,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:16,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735747921] [2021-03-12 00:34:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:16,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:16,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:16,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:16,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:16,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:16,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:16,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:16,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:16,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:16,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:16,606 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 00:34:16,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735747921] [2021-03-12 00:34:16,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:16,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:34:16,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358686734] [2021-03-12 00:34:16,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:34:16,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:16,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:34:16,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:34:16,611 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:34:16,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 137 transitions, 1085 flow. Second operand has 9 states, 9 states have (on average 41.77777777777778) internal successors, (376), 9 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:16,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:16,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:34:16,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:20,115 INFO L129 PetriNetUnfolder]: 46490/61720 cut-off events. [2021-03-12 00:34:20,116 INFO L130 PetriNetUnfolder]: For 97630/105389 co-relation queries the response was YES. [2021-03-12 00:34:20,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268432 conditions, 61720 events. 46490/61720 cut-off events. For 97630/105389 co-relation queries the response was YES. Maximal size of possible extension queue 3497. Compared 377565 event pairs, 7432 based on Foata normal form. 375/61976 useless extension candidates. Maximal degree in co-relation 267160. Up to 31655 conditions per place. [2021-03-12 00:34:20,580 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 41 selfloop transitions, 470 changer transitions 0/526 dead transitions. [2021-03-12 00:34:20,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 526 transitions, 5268 flow [2021-03-12 00:34:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:34:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:34:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 472 transitions. [2021-03-12 00:34:20,592 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6243386243386243 [2021-03-12 00:34:20,592 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 472 transitions. [2021-03-12 00:34:20,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 472 transitions. [2021-03-12 00:34:20,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:20,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 472 transitions. [2021-03-12 00:34:20,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 52.44444444444444) internal successors, (472), 9 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:20,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:20,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:20,595 INFO L185 Difference]: Start difference. First operand has 54 places, 137 transitions, 1085 flow. Second operand 9 states and 472 transitions. [2021-03-12 00:34:20,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 526 transitions, 5268 flow [2021-03-12 00:34:20,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 526 transitions, 5260 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-12 00:34:20,635 INFO L241 Difference]: Finished difference. Result has 61 places, 520 transitions, 5222 flow [2021-03-12 00:34:20,636 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5222, PETRI_PLACES=61, PETRI_TRANSITIONS=520} [2021-03-12 00:34:20,636 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2021-03-12 00:34:20,636 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 520 transitions, 5222 flow [2021-03-12 00:34:20,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 41.77777777777778) internal successors, (376), 9 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:20,636 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:20,636 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] [2021-03-12 00:34:20,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-12 00:34:20,636 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:20,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:20,637 INFO L82 PathProgramCache]: Analyzing trace with hash 351329568, now seen corresponding path program 5 times [2021-03-12 00:34:20,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:20,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714545708] [2021-03-12 00:34:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:20,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:20,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:20,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:20,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:20,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:20,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:20,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:20,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:20,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714545708] [2021-03-12 00:34:20,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:20,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:34:20,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83242619] [2021-03-12 00:34:20,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:34:20,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:20,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:34:20,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:34:20,671 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:34:20,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 520 transitions, 5222 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:20,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:20,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:34:20,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:25,810 INFO L129 PetriNetUnfolder]: 46894/62244 cut-off events. [2021-03-12 00:34:25,811 INFO L130 PetriNetUnfolder]: For 114450/155211 co-relation queries the response was YES. [2021-03-12 00:34:26,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 328814 conditions, 62244 events. 46894/62244 cut-off events. For 114450/155211 co-relation queries the response was YES. Maximal size of possible extension queue 3520. Compared 379413 event pairs, 9799 based on Foata normal form. 270/62396 useless extension candidates. Maximal degree in co-relation 327542. Up to 59048 conditions per place. [2021-03-12 00:34:26,351 INFO L132 encePairwiseOnDemand]: 70/84 looper letters, 386 selfloop transitions, 254 changer transitions 0/655 dead transitions. [2021-03-12 00:34:26,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 655 transitions, 7864 flow [2021-03-12 00:34:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:34:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:34:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2021-03-12 00:34:26,352 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2021-03-12 00:34:26,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 250 transitions. [2021-03-12 00:34:26,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 250 transitions. [2021-03-12 00:34:26,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:26,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 250 transitions. [2021-03-12 00:34:26,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:26,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:34:26,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:34:26,354 INFO L185 Difference]: Start difference. First operand has 61 places, 520 transitions, 5222 flow. Second operand 5 states and 250 transitions. [2021-03-12 00:34:26,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 655 transitions, 7864 flow [2021-03-12 00:34:27,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 655 transitions, 7512 flow, removed 168 selfloop flow, removed 2 redundant places. [2021-03-12 00:34:27,546 INFO L241 Difference]: Finished difference. Result has 64 places, 595 transitions, 6531 flow [2021-03-12 00:34:27,546 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=5026, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6531, PETRI_PLACES=64, PETRI_TRANSITIONS=595} [2021-03-12 00:34:27,546 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2021-03-12 00:34:27,546 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 595 transitions, 6531 flow [2021-03-12 00:34:27,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:27,546 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:27,547 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] [2021-03-12 00:34:27,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-12 00:34:27,547 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:27,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1794998746, now seen corresponding path program 6 times [2021-03-12 00:34:27,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:27,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506398789] [2021-03-12 00:34:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:27,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:27,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:27,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:27,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:27,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:27,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:27,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:27,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:27,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:27,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:27,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:27,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:27,582 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 00:34:27,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506398789] [2021-03-12 00:34:27,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:27,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:34:27,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205131374] [2021-03-12 00:34:27,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:34:27,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:27,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:34:27,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:34:27,583 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:34:27,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 595 transitions, 6531 flow. Second operand has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:27,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:27,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:34:27,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:35,043 INFO L129 PetriNetUnfolder]: 61798/83278 cut-off events. [2021-03-12 00:34:35,043 INFO L130 PetriNetUnfolder]: For 126474/153581 co-relation queries the response was YES. [2021-03-12 00:34:35,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394874 conditions, 83278 events. 61798/83278 cut-off events. For 126474/153581 co-relation queries the response was YES. Maximal size of possible extension queue 5078. Compared 546274 event pairs, 8595 based on Foata normal form. 1103/84246 useless extension candidates. Maximal degree in co-relation 392590. Up to 43417 conditions per place. [2021-03-12 00:34:35,522 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 155 selfloop transitions, 778 changer transitions 0/948 dead transitions. [2021-03-12 00:34:35,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 948 transitions, 11823 flow [2021-03-12 00:34:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:34:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:34:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 362 transitions. [2021-03-12 00:34:35,526 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6156462585034014 [2021-03-12 00:34:35,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 362 transitions. [2021-03-12 00:34:35,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 362 transitions. [2021-03-12 00:34:35,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:35,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 362 transitions. [2021-03-12 00:34:35,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:35,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:35,528 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:35,528 INFO L185 Difference]: Start difference. First operand has 64 places, 595 transitions, 6531 flow. Second operand 7 states and 362 transitions. [2021-03-12 00:34:35,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 948 transitions, 11823 flow [2021-03-12 00:34:35,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 948 transitions, 11488 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:34:35,744 INFO L241 Difference]: Finished difference. Result has 70 places, 915 transitions, 12057 flow [2021-03-12 00:34:35,744 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=6282, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12057, PETRI_PLACES=70, PETRI_TRANSITIONS=915} [2021-03-12 00:34:35,745 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2021-03-12 00:34:35,745 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 915 transitions, 12057 flow [2021-03-12 00:34:35,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:35,745 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:35,745 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] [2021-03-12 00:34:35,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-12 00:34:35,745 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:35,745 INFO L82 PathProgramCache]: Analyzing trace with hash -227556510, now seen corresponding path program 7 times [2021-03-12 00:34:35,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:35,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441010283] [2021-03-12 00:34:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:35,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:35,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:35,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:35,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:35,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:35,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:35,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:35,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:35,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:35,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:35,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:35,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:35,776 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 00:34:35,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441010283] [2021-03-12 00:34:35,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:35,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:34:35,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358212175] [2021-03-12 00:34:35,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:34:35,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:35,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:34:35,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:34:35,777 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:34:35,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 915 transitions, 12057 flow. Second operand has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:35,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:35,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:34:35,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:46,102 INFO L129 PetriNetUnfolder]: 65685/88588 cut-off events. [2021-03-12 00:34:46,102 INFO L130 PetriNetUnfolder]: For 267052/312725 co-relation queries the response was YES. [2021-03-12 00:34:46,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525306 conditions, 88588 events. 65685/88588 cut-off events. For 267052/312725 co-relation queries the response was YES. Maximal size of possible extension queue 5417. Compared 584553 event pairs, 7398 based on Foata normal form. 1642/90104 useless extension candidates. Maximal degree in co-relation 523045. Up to 46797 conditions per place. [2021-03-12 00:34:46,895 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 155 selfloop transitions, 1054 changer transitions 0/1224 dead transitions. [2021-03-12 00:34:46,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 1224 transitions, 18842 flow [2021-03-12 00:34:46,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:34:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:34:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 362 transitions. [2021-03-12 00:34:46,897 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6156462585034014 [2021-03-12 00:34:46,897 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 362 transitions. [2021-03-12 00:34:46,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 362 transitions. [2021-03-12 00:34:46,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:46,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 362 transitions. [2021-03-12 00:34:46,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:46,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:46,899 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:46,899 INFO L185 Difference]: Start difference. First operand has 70 places, 915 transitions, 12057 flow. Second operand 7 states and 362 transitions. [2021-03-12 00:34:46,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 1224 transitions, 18842 flow [2021-03-12 00:34:47,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 1224 transitions, 18834 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-12 00:34:47,159 INFO L241 Difference]: Finished difference. Result has 76 places, 1191 transitions, 18871 flow [2021-03-12 00:34:47,159 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=12049, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=778, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18871, PETRI_PLACES=76, PETRI_TRANSITIONS=1191} [2021-03-12 00:34:47,160 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2021-03-12 00:34:47,160 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 1191 transitions, 18871 flow [2021-03-12 00:34:47,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:47,160 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:47,160 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] [2021-03-12 00:34:47,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-12 00:34:47,160 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:47,161 INFO L82 PathProgramCache]: Analyzing trace with hash -242037574, now seen corresponding path program 8 times [2021-03-12 00:34:47,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:47,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510505161] [2021-03-12 00:34:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:47,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:47,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:47,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:47,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:47,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:47,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:47,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:47,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:47,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:47,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:47,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:47,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:47,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510505161] [2021-03-12 00:34:47,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:47,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:34:47,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532173040] [2021-03-12 00:34:47,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:34:47,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:47,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:34:47,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:34:47,203 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:34:47,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 1191 transitions, 18871 flow. Second operand has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:47,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:47,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:34:47,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:00,537 INFO L129 PetriNetUnfolder]: 69937/94449 cut-off events. [2021-03-12 00:35:00,537 INFO L130 PetriNetUnfolder]: For 423523/477614 co-relation queries the response was YES. [2021-03-12 00:35:00,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639553 conditions, 94449 events. 69937/94449 cut-off events. For 423523/477614 co-relation queries the response was YES. Maximal size of possible extension queue 5837. Compared 631136 event pairs, 7882 based on Foata normal form. 1989/96293 useless extension candidates. Maximal degree in co-relation 637394. Up to 50547 conditions per place. [2021-03-12 00:35:01,270 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 155 selfloop transitions, 1456 changer transitions 0/1626 dead transitions. [2021-03-12 00:35:01,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 1626 transitions, 29491 flow [2021-03-12 00:35:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:35:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:35:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 362 transitions. [2021-03-12 00:35:01,272 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6156462585034014 [2021-03-12 00:35:01,272 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 362 transitions. [2021-03-12 00:35:01,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 362 transitions. [2021-03-12 00:35:01,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:01,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 362 transitions. [2021-03-12 00:35:01,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:01,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:01,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:01,274 INFO L185 Difference]: Start difference. First operand has 76 places, 1191 transitions, 18871 flow. Second operand 7 states and 362 transitions. [2021-03-12 00:35:01,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 1626 transitions, 29491 flow [2021-03-12 00:35:02,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 1626 transitions, 27842 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 00:35:02,747 INFO L241 Difference]: Finished difference. Result has 79 places, 1594 transitions, 28155 flow [2021-03-12 00:35:02,748 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=17624, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28155, PETRI_PLACES=79, PETRI_TRANSITIONS=1594} [2021-03-12 00:35:02,748 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2021-03-12 00:35:02,748 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 1594 transitions, 28155 flow [2021-03-12 00:35:02,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:02,749 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:02,749 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] [2021-03-12 00:35:02,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-12 00:35:02,749 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:35:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:02,749 INFO L82 PathProgramCache]: Analyzing trace with hash 13988292, now seen corresponding path program 9 times [2021-03-12 00:35:02,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:02,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232329878] [2021-03-12 00:35:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:02,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:02,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:02,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:02,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:02,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:02,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:02,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:02,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:02,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:02,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:02,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:02,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:02,800 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 00:35:02,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232329878] [2021-03-12 00:35:02,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:02,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:35:02,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430340997] [2021-03-12 00:35:02,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:35:02,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:35:02,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:35:02,802 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:35:02,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 1594 transitions, 28155 flow. Second operand has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:02,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:02,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:35:02,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:21,164 INFO L129 PetriNetUnfolder]: 74260/100740 cut-off events. [2021-03-12 00:35:21,164 INFO L130 PetriNetUnfolder]: For 621411/672614 co-relation queries the response was YES. [2021-03-12 00:35:21,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 720606 conditions, 100740 events. 74260/100740 cut-off events. For 621411/672614 co-relation queries the response was YES. Maximal size of possible extension queue 6285. Compared 687329 event pairs, 7778 based on Foata normal form. 2348/102951 useless extension candidates. Maximal degree in co-relation 718419. Up to 54418 conditions per place. [2021-03-12 00:35:21,987 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 155 selfloop transitions, 2009 changer transitions 0/2179 dead transitions. [2021-03-12 00:35:21,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 2179 transitions, 43539 flow [2021-03-12 00:35:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:35:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:35:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 362 transitions. [2021-03-12 00:35:21,989 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6156462585034014 [2021-03-12 00:35:21,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 362 transitions. [2021-03-12 00:35:21,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 362 transitions. [2021-03-12 00:35:21,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:21,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 362 transitions. [2021-03-12 00:35:21,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:21,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:21,990 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:21,990 INFO L185 Difference]: Start difference. First operand has 79 places, 1594 transitions, 28155 flow. Second operand 7 states and 362 transitions. [2021-03-12 00:35:21,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 2179 transitions, 43539 flow [2021-03-12 00:35:23,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 2179 transitions, 41337 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 00:35:23,830 INFO L241 Difference]: Finished difference. Result has 82 places, 2148 transitions, 42031 flow [2021-03-12 00:35:23,831 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=26424, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42031, PETRI_PLACES=82, PETRI_TRANSITIONS=2148} [2021-03-12 00:35:23,831 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2021-03-12 00:35:23,831 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 2148 transitions, 42031 flow [2021-03-12 00:35:23,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:23,831 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:23,831 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] [2021-03-12 00:35:23,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-12 00:35:23,831 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:35:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:23,832 INFO L82 PathProgramCache]: Analyzing trace with hash 181076732, now seen corresponding path program 10 times [2021-03-12 00:35:23,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:23,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911269250] [2021-03-12 00:35:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:23,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:23,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:23,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:23,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:23,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:23,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:23,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:23,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:23,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:23,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:23,856 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 00:35:23,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911269250] [2021-03-12 00:35:23,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:23,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:35:23,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912014172] [2021-03-12 00:35:23,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:35:23,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:23,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:35:23,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:35:23,858 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:35:23,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 2148 transitions, 42031 flow. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:23,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:23,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:35:23,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:49,009 INFO L129 PetriNetUnfolder]: 79800/108688 cut-off events. [2021-03-12 00:35:49,009 INFO L130 PetriNetUnfolder]: For 902214/954731 co-relation queries the response was YES. [2021-03-12 00:35:49,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 821619 conditions, 108688 events. 79800/108688 cut-off events. For 902214/954731 co-relation queries the response was YES. Maximal size of possible extension queue 6948. Compared 755404 event pairs, 8337 based on Foata normal form. 2702/111260 useless extension candidates. Maximal degree in co-relation 819518. Up to 58497 conditions per place. [2021-03-12 00:35:49,836 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 522 selfloop transitions, 2268 changer transitions 0/2805 dead transitions. [2021-03-12 00:35:49,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 2805 transitions, 61443 flow [2021-03-12 00:35:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:35:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:35:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 307 transitions. [2021-03-12 00:35:49,837 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6091269841269841 [2021-03-12 00:35:49,837 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 307 transitions. [2021-03-12 00:35:49,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 307 transitions. [2021-03-12 00:35:49,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:49,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 307 transitions. [2021-03-12 00:35:49,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.166666666666664) internal successors, (307), 6 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:49,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:49,839 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:49,839 INFO L185 Difference]: Start difference. First operand has 82 places, 2148 transitions, 42031 flow. Second operand 6 states and 307 transitions. [2021-03-12 00:35:49,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 2805 transitions, 61443 flow [2021-03-12 00:35:53,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 2805 transitions, 58630 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 00:35:53,038 INFO L241 Difference]: Finished difference. Result has 84 places, 2756 transitions, 58223 flow [2021-03-12 00:35:53,040 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=39829, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1660, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=58223, PETRI_PLACES=84, PETRI_TRANSITIONS=2756} [2021-03-12 00:35:53,040 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2021-03-12 00:35:53,040 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 2756 transitions, 58223 flow [2021-03-12 00:35:53,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:53,040 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:53,040 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] [2021-03-12 00:35:53,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-12 00:35:53,040 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:35:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:53,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1605593968, now seen corresponding path program 11 times [2021-03-12 00:35:53,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:53,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445626035] [2021-03-12 00:35:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:53,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:53,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:53,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:53,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:53,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:53,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:53,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:53,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:53,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:53,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:53,064 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 00:35:53,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445626035] [2021-03-12 00:35:53,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:53,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:35:53,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290365478] [2021-03-12 00:35:53,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:35:53,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:53,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:35:53,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:35:53,065 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:35:53,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 2756 transitions, 58223 flow. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:53,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:53,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:35:53,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:36:27,315 INFO L129 PetriNetUnfolder]: 84958/116182 cut-off events. [2021-03-12 00:36:27,316 INFO L130 PetriNetUnfolder]: For 1202830/1255623 co-relation queries the response was YES. [2021-03-12 00:36:27,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 894216 conditions, 116182 events. 84958/116182 cut-off events. For 1202830/1255623 co-relation queries the response was YES. Maximal size of possible extension queue 7581. Compared 822305 event pairs, 9102 based on Foata normal form. 2692/118737 useless extension candidates. Maximal degree in co-relation 892168. Up to 62296 conditions per place. [2021-03-12 00:36:28,370 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 522 selfloop transitions, 2873 changer transitions 0/3410 dead transitions. [2021-03-12 00:36:28,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 3410 transitions, 79817 flow [2021-03-12 00:36:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:36:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:36:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 307 transitions. [2021-03-12 00:36:28,372 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6091269841269841 [2021-03-12 00:36:28,372 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 307 transitions. [2021-03-12 00:36:28,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 307 transitions. [2021-03-12 00:36:28,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:36:28,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 307 transitions. [2021-03-12 00:36:28,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.166666666666664) internal successors, (307), 6 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:28,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:28,373 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:28,373 INFO L185 Difference]: Start difference. First operand has 84 places, 2756 transitions, 58223 flow. Second operand 6 states and 307 transitions. [2021-03-12 00:36:28,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 3410 transitions, 79817 flow [2021-03-12 00:36:31,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 3410 transitions, 76889 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:36:31,709 INFO L241 Difference]: Finished difference. Result has 87 places, 3364 transitions, 76909 flow [2021-03-12 00:36:31,711 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=55900, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76909, PETRI_PLACES=87, PETRI_TRANSITIONS=3364} [2021-03-12 00:36:31,711 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2021-03-12 00:36:31,711 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 3364 transitions, 76909 flow [2021-03-12 00:36:31,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:31,712 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:36:31,712 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] [2021-03-12 00:36:31,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-12 00:36:31,712 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:36:31,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:36:31,712 INFO L82 PathProgramCache]: Analyzing trace with hash 800336964, now seen corresponding path program 12 times [2021-03-12 00:36:31,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:36:31,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245019458] [2021-03-12 00:36:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:36:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:36:31,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:31,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:36:31,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:31,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:31,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:31,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:31,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:31,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:31,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:31,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:36:31,750 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 00:36:31,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245019458] [2021-03-12 00:36:31,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:36:31,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:36:31,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237215281] [2021-03-12 00:36:31,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:36:31,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:36:31,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:36:31,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:36:31,751 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:36:31,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 3364 transitions, 76909 flow. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:31,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:36:31,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:36:31,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:37:18,533 INFO L129 PetriNetUnfolder]: 89228/122467 cut-off events. [2021-03-12 00:37:18,533 INFO L130 PetriNetUnfolder]: For 1530897/1586086 co-relation queries the response was YES. [2021-03-12 00:37:18,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 984590 conditions, 122467 events. 89228/122467 cut-off events. For 1530897/1586086 co-relation queries the response was YES. Maximal size of possible extension queue 8120. Compared 879314 event pairs, 8348 based on Foata normal form. 2336/124662 useless extension candidates. Maximal degree in co-relation 982485. Up to 65376 conditions per place. [2021-03-12 00:37:19,657 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 522 selfloop transitions, 3326 changer transitions 0/3863 dead transitions. [2021-03-12 00:37:19,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 3863 transitions, 96393 flow [2021-03-12 00:37:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:37:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:37:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 307 transitions. [2021-03-12 00:37:19,659 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6091269841269841 [2021-03-12 00:37:19,659 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 307 transitions. [2021-03-12 00:37:19,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 307 transitions. [2021-03-12 00:37:19,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:37:19,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 307 transitions. [2021-03-12 00:37:19,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.166666666666664) internal successors, (307), 6 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:19,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:19,660 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:19,660 INFO L185 Difference]: Start difference. First operand has 87 places, 3364 transitions, 76909 flow. Second operand 6 states and 307 transitions. [2021-03-12 00:37:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 3863 transitions, 96393 flow [2021-03-12 00:37:23,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 3863 transitions, 93011 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:37:23,184 INFO L241 Difference]: Finished difference. Result has 90 places, 3821 transitions, 93073 flow [2021-03-12 00:37:23,186 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=73879, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2865, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93073, PETRI_PLACES=90, PETRI_TRANSITIONS=3821} [2021-03-12 00:37:23,186 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2021-03-12 00:37:23,186 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 3821 transitions, 93073 flow [2021-03-12 00:37:23,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:23,186 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:37:23,186 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] [2021-03-12 00:37:23,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-12 00:37:23,186 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:37:23,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:37:23,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1858696406, now seen corresponding path program 13 times [2021-03-12 00:37:23,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:37:23,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816699505] [2021-03-12 00:37:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:37:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:37:23,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:23,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:37:23,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:23,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:23,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:23,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:23,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:23,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:23,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:23,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:37:23,220 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 00:37:23,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816699505] [2021-03-12 00:37:23,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:37:23,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:37:23,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703115748] [2021-03-12 00:37:23,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:37:23,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:37:23,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:37:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:37:23,221 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:37:23,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 3821 transitions, 93073 flow. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:23,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:37:23,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:37:23,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:38:21,879 INFO L129 PetriNetUnfolder]: 93389/128663 cut-off events. [2021-03-12 00:38:21,880 INFO L130 PetriNetUnfolder]: For 1955812/2016116 co-relation queries the response was YES. [2021-03-12 00:38:22,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1078236 conditions, 128663 events. 93389/128663 cut-off events. For 1955812/2016116 co-relation queries the response was YES. Maximal size of possible extension queue 8678. Compared 938056 event pairs, 8473 based on Foata normal form. 2704/131236 useless extension candidates. Maximal degree in co-relation 1076225. Up to 68454 conditions per place. [2021-03-12 00:38:22,964 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 522 selfloop transitions, 3810 changer transitions 0/4347 dead transitions. [2021-03-12 00:38:22,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 4347 transitions, 114926 flow [2021-03-12 00:38:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:38:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:38:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 307 transitions. [2021-03-12 00:38:22,965 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6091269841269841 [2021-03-12 00:38:22,965 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 307 transitions. [2021-03-12 00:38:22,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 307 transitions. [2021-03-12 00:38:22,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:38:22,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 307 transitions. [2021-03-12 00:38:22,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.166666666666664) internal successors, (307), 6 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:38:22,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:38:22,966 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:38:22,967 INFO L185 Difference]: Start difference. First operand has 90 places, 3821 transitions, 93073 flow. Second operand 6 states and 307 transitions. [2021-03-12 00:38:22,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 4347 transitions, 114926 flow [2021-03-12 00:38:26,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 4347 transitions, 111061 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:38:26,574 INFO L241 Difference]: Finished difference. Result has 93 places, 4307 transitions, 111724 flow [2021-03-12 00:38:26,576 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=88975, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111724, PETRI_PLACES=93, PETRI_TRANSITIONS=4307} [2021-03-12 00:38:26,577 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2021-03-12 00:38:26,577 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 4307 transitions, 111724 flow [2021-03-12 00:38:26,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:38:26,577 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:38:26,577 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] [2021-03-12 00:38:26,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-12 00:38:26,577 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:38:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:38:26,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1052114686, now seen corresponding path program 14 times [2021-03-12 00:38:26,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:38:26,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417517681] [2021-03-12 00:38:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:38:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:38:26,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:38:26,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:38:26,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:38:26,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:38:26,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:38:26,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:38:26,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:38:26,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:38:26,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:38:26,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:38:26,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:38:26,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:38:26,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:38:26,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:38:26,609 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 00:38:26,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417517681] [2021-03-12 00:38:26,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:38:26,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:38:26,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001492959] [2021-03-12 00:38:26,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:38:26,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:38:26,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:38:26,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:38:26,610 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:38:26,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 4307 transitions, 111724 flow. Second operand has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:38:26,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:38:26,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:38:26,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:39:38,164 INFO L129 PetriNetUnfolder]: 99098/136840 cut-off events. [2021-03-12 00:39:38,164 INFO L130 PetriNetUnfolder]: For 2339708/2409287 co-relation queries the response was YES. [2021-03-12 00:39:38,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1201355 conditions, 136840 events. 99098/136840 cut-off events. For 2339708/2409287 co-relation queries the response was YES. Maximal size of possible extension queue 9321. Compared 1007070 event pairs, 7626 based on Foata normal form. 2797/139486 useless extension candidates. Maximal degree in co-relation 1199439. Up to 73454 conditions per place. [2021-03-12 00:39:39,317 INFO L132 encePairwiseOnDemand]: 69/84 looper letters, 170 selfloop transitions, 4436 changer transitions 0/4621 dead transitions. [2021-03-12 00:39:39,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 4621 transitions, 127636 flow [2021-03-12 00:39:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:39:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:39:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 362 transitions. [2021-03-12 00:39:39,318 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6156462585034014 [2021-03-12 00:39:39,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 362 transitions. [2021-03-12 00:39:39,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 362 transitions. [2021-03-12 00:39:39,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:39:39,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 362 transitions. [2021-03-12 00:39:39,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:39:39,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:39:39,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:39:39,320 INFO L185 Difference]: Start difference. First operand has 93 places, 4307 transitions, 111724 flow. Second operand 7 states and 362 transitions. [2021-03-12 00:39:39,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 4621 transitions, 127636 flow [2021-03-12 00:39:43,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 4621 transitions, 127575 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:39:43,487 INFO L241 Difference]: Finished difference. Result has 97 places, 4582 transitions, 126836 flow [2021-03-12 00:39:43,489 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=111663, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126836, PETRI_PLACES=97, PETRI_TRANSITIONS=4582} [2021-03-12 00:39:43,489 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2021-03-12 00:39:43,489 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 4582 transitions, 126836 flow [2021-03-12 00:39:43,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:39:43,489 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:39:43,489 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] [2021-03-12 00:39:43,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-12 00:39:43,490 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:39:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:39:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash -412928642, now seen corresponding path program 15 times [2021-03-12 00:39:43,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:39:43,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622017152] [2021-03-12 00:39:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:39:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:39:43,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:43,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:39:43,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:43,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:39:43,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:43,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:39:43,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:43,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:39:43,511 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 00:39:43,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622017152] [2021-03-12 00:39:43,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:39:43,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:39:43,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346625130] [2021-03-12 00:39:43,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:39:43,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:39:43,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:39:43,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:39:43,512 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:39:43,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 4582 transitions, 126836 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:39:43,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:39:43,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:39:43,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:41:02,147 INFO L129 PetriNetUnfolder]: 99828/137904 cut-off events. [2021-03-12 00:41:02,147 INFO L130 PetriNetUnfolder]: For 2681459/2754244 co-relation queries the response was YES. [2021-03-12 00:41:02,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1285248 conditions, 137904 events. 99828/137904 cut-off events. For 2681459/2754244 co-relation queries the response was YES. Maximal size of possible extension queue 9284. Compared 1020858 event pairs, 13396 based on Foata normal form. 1005/138773 useless extension candidates. Maximal degree in co-relation 1283529. Up to 125074 conditions per place. [2021-03-12 00:41:03,509 INFO L132 encePairwiseOnDemand]: 70/84 looper letters, 2231 selfloop transitions, 2922 changer transitions 0/5168 dead transitions. [2021-03-12 00:41:03,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 5168 transitions, 154501 flow [2021-03-12 00:41:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:41:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:41:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2021-03-12 00:41:03,510 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2021-03-12 00:41:03,510 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 250 transitions. [2021-03-12 00:41:03,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 250 transitions. [2021-03-12 00:41:03,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:41:03,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 250 transitions. [2021-03-12 00:41:03,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:41:03,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:41:03,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:41:03,512 INFO L185 Difference]: Start difference. First operand has 97 places, 4582 transitions, 126836 flow. Second operand 5 states and 250 transitions. [2021-03-12 00:41:03,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 5168 transitions, 154501 flow [2021-03-12 00:41:06,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 5168 transitions, 149321 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 00:41:06,933 INFO L241 Difference]: Finished difference. Result has 98 places, 5114 transitions, 145493 flow [2021-03-12 00:41:06,936 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=122096, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145493, PETRI_PLACES=98, PETRI_TRANSITIONS=5114} [2021-03-12 00:41:06,936 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2021-03-12 00:41:06,936 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 5114 transitions, 145493 flow [2021-03-12 00:41:06,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:41:06,936 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:41:06,936 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] [2021-03-12 00:41:06,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-12 00:41:06,936 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:41:06,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:41:06,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2023587044, now seen corresponding path program 16 times [2021-03-12 00:41:06,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:41:06,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933591360] [2021-03-12 00:41:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:41:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:41:06,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:41:06,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:41:06,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:41:06,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:41:06,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:41:06,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:41:06,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:41:06,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:41:06,954 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 00:41:06,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933591360] [2021-03-12 00:41:06,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:41:06,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:41:06,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043729878] [2021-03-12 00:41:06,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:41:06,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:41:06,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:41:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:41:06,955 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:41:06,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 5114 transitions, 145493 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:41:06,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:41:06,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:41:06,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:42:34,170 INFO L129 PetriNetUnfolder]: 100166/138597 cut-off events. [2021-03-12 00:42:34,170 INFO L130 PetriNetUnfolder]: For 2797974/2866082 co-relation queries the response was YES. [2021-03-12 00:42:34,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1232520 conditions, 138597 events. 100166/138597 cut-off events. For 2797974/2866082 co-relation queries the response was YES. Maximal size of possible extension queue 9245. Compared 1030441 event pairs, 12960 based on Foata normal form. 983/139444 useless extension candidates. Maximal degree in co-relation 1230854. Up to 124863 conditions per place. [2021-03-12 00:42:35,494 INFO L132 encePairwiseOnDemand]: 70/84 looper letters, 2231 selfloop transitions, 3408 changer transitions 0/5654 dead transitions. [2021-03-12 00:42:35,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 5654 transitions, 173498 flow [2021-03-12 00:42:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:42:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:42:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2021-03-12 00:42:35,500 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2021-03-12 00:42:35,500 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 250 transitions. [2021-03-12 00:42:35,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 250 transitions. [2021-03-12 00:42:35,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:42:35,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 250 transitions. [2021-03-12 00:42:35,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:42:35,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:42:35,502 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:42:35,502 INFO L185 Difference]: Start difference. First operand has 98 places, 5114 transitions, 145493 flow. Second operand 5 states and 250 transitions. [2021-03-12 00:42:35,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 5654 transitions, 173498 flow [2021-03-12 00:42:39,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 5654 transitions, 170095 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:42:39,454 INFO L241 Difference]: Finished difference. Result has 101 places, 5606 transitions, 166579 flow [2021-03-12 00:42:39,456 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142136, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2902, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166579, PETRI_PLACES=101, PETRI_TRANSITIONS=5606} [2021-03-12 00:42:39,457 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2021-03-12 00:42:39,457 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 5606 transitions, 166579 flow [2021-03-12 00:42:39,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:42:39,457 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:42:39,457 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] [2021-03-12 00:42:39,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-12 00:42:39,457 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:42:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:42:39,457 INFO L82 PathProgramCache]: Analyzing trace with hash -983914462, now seen corresponding path program 17 times [2021-03-12 00:42:39,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:42:39,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462179801] [2021-03-12 00:42:39,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:42:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:42:39,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:39,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:42:39,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:39,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:42:39,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:39,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:42:39,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:39,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:42:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:42:39,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462179801] [2021-03-12 00:42:39,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:42:39,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:42:39,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268671888] [2021-03-12 00:42:39,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:42:39,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:42:39,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:42:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:42:39,476 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:42:39,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 5606 transitions, 166579 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:42:39,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:42:39,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:42:39,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:44:17,479 INFO L129 PetriNetUnfolder]: 100112/138782 cut-off events. [2021-03-12 00:44:17,480 INFO L130 PetriNetUnfolder]: For 2854288/2928833 co-relation queries the response was YES. [2021-03-12 00:44:17,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1237913 conditions, 138782 events. 100112/138782 cut-off events. For 2854288/2928833 co-relation queries the response was YES. Maximal size of possible extension queue 9194. Compared 1036096 event pairs, 13552 based on Foata normal form. 988/139618 useless extension candidates. Maximal degree in co-relation 1236294. Up to 124408 conditions per place. [2021-03-12 00:44:18,842 INFO L132 encePairwiseOnDemand]: 70/84 looper letters, 2231 selfloop transitions, 3786 changer transitions 0/6032 dead transitions. [2021-03-12 00:44:18,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 6032 transitions, 192162 flow [2021-03-12 00:44:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:44:18,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:44:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2021-03-12 00:44:18,843 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2021-03-12 00:44:18,843 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 250 transitions. [2021-03-12 00:44:18,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 250 transitions. [2021-03-12 00:44:18,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:44:18,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 250 transitions. [2021-03-12 00:44:18,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:44:18,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:44:18,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:44:18,844 INFO L185 Difference]: Start difference. First operand has 101 places, 5606 transitions, 166579 flow. Second operand 5 states and 250 transitions. [2021-03-12 00:44:18,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 6032 transitions, 192162 flow [2021-03-12 00:44:22,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 6032 transitions, 188381 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:44:22,944 INFO L241 Difference]: Finished difference. Result has 104 places, 5990 transitions, 185109 flow [2021-03-12 00:44:22,947 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=161818, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185109, PETRI_PLACES=104, PETRI_TRANSITIONS=5990} [2021-03-12 00:44:22,948 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2021-03-12 00:44:22,948 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 5990 transitions, 185109 flow [2021-03-12 00:44:22,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:44:22,948 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:44:22,948 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] [2021-03-12 00:44:22,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-12 00:44:22,948 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:44:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:44:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash 315853486, now seen corresponding path program 18 times [2021-03-12 00:44:22,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:44:22,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264443742] [2021-03-12 00:44:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:44:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:44:22,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:22,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:44:22,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:22,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:22,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:22,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:22,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:22,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:44:22,966 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 00:44:22,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264443742] [2021-03-12 00:44:22,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:44:22,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:44:22,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656455610] [2021-03-12 00:44:22,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:44:22,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:44:22,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:44:22,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:44:22,967 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:44:22,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 5990 transitions, 185109 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:44:22,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:44:22,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:44:22,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:46:14,809 INFO L129 PetriNetUnfolder]: 99840/138253 cut-off events. [2021-03-12 00:46:14,809 INFO L130 PetriNetUnfolder]: For 2955862/3027373 co-relation queries the response was YES. [2021-03-12 00:46:15,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1240099 conditions, 138253 events. 99840/138253 cut-off events. For 2955862/3027373 co-relation queries the response was YES. Maximal size of possible extension queue 9057. Compared 1028961 event pairs, 11758 based on Foata normal form. 799/138916 useless extension candidates. Maximal degree in co-relation 1238882. Up to 123903 conditions per place. [2021-03-12 00:46:16,060 INFO L132 encePairwiseOnDemand]: 70/84 looper letters, 2227 selfloop transitions, 3944 changer transitions 1/6187 dead transitions. [2021-03-12 00:46:16,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 6187 transitions, 203451 flow [2021-03-12 00:46:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:46:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:46:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2021-03-12 00:46:16,071 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2021-03-12 00:46:16,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 250 transitions. [2021-03-12 00:46:16,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 250 transitions. [2021-03-12 00:46:16,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:46:16,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 250 transitions. [2021-03-12 00:46:16,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:16,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:46:16,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 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 00:46:16,072 INFO L185 Difference]: Start difference. First operand has 104 places, 5990 transitions, 185109 flow. Second operand 5 states and 250 transitions. [2021-03-12 00:46:16,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 6187 transitions, 203451 flow [2021-03-12 00:46:20,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 6187 transitions, 199510 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:46:20,362 INFO L241 Difference]: Finished difference. Result has 107 places, 6154 transitions, 196119 flow [2021-03-12 00:46:20,366 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=179052, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3715, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196119, PETRI_PLACES=107, PETRI_TRANSITIONS=6154} [2021-03-12 00:46:20,366 INFO L335 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2021-03-12 00:46:20,366 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 6154 transitions, 196119 flow [2021-03-12 00:46:20,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:20,366 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:46:20,366 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] [2021-03-12 00:46:20,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-12 00:46:20,367 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:46:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:46:20,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1608819872, now seen corresponding path program 19 times [2021-03-12 00:46:20,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:46:20,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937767434] [2021-03-12 00:46:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:46:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:46:20,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:20,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:20,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:20,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:20,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:20,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:20,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:20,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:20,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:20,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:20,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:20,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:20,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:20,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:46:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:20,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937767434] [2021-03-12 00:46:20,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:46:20,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:46:20,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523908312] [2021-03-12 00:46:20,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:46:20,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:46:20,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:46:20,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:46:20,408 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-12 00:46:20,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 6154 transitions, 196119 flow. Second operand has 8 states, 8 states have (on average 42.0) internal successors, (336), 8 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:20,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:46:20,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-12 00:46:20,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-12 00:47:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:47:50,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-12 00:47:50,504 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-12 00:47:50,507 WARN L224 ceAbstractionStarter]: Timeout [2021-03-12 00:47:50,507 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 12:47:50 BasicIcfg [2021-03-12 00:47:50,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 00:47:50,507 INFO L168 Benchmark]: Toolchain (without parser) took 823359.97 ms. Allocated memory was 255.9 MB in the beginning and 12.1 GB in the end (delta: 11.9 GB). Free memory was 237.0 MB in the beginning and 6.8 GB in the end (delta: -6.6 GB). Peak memory consumption was 6.3 GB. Max. memory is 16.0 GB. [2021-03-12 00:47:50,508 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:47:50,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.79 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:47:50,508 INFO L168 Benchmark]: Boogie Preprocessor took 9.96 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 233.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:47:50,508 INFO L168 Benchmark]: RCFGBuilder took 214.80 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 232.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.0 GB. [2021-03-12 00:47:50,509 INFO L168 Benchmark]: TraceAbstraction took 823112.65 ms. Allocated memory was 255.9 MB in the beginning and 12.1 GB in the end (delta: 11.9 GB). Free memory was 231.7 MB in the beginning and 6.8 GB in the end (delta: -6.6 GB). Peak memory consumption was 6.3 GB. Max. memory is 16.0 GB. [2021-03-12 00:47:50,510 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 0.10 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.79 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.96 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 233.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 214.80 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 232.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 823112.65 ms. Allocated memory was 255.9 MB in the beginning and 12.1 GB in the end (delta: 11.9 GB). Free memory was 231.7 MB in the beginning and 6.8 GB in the end (delta: -6.6 GB). Peak memory consumption was 6.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1343.7ms, 75 PlacesBefore, 53 PlacesAfterwards, 53 TransitionsBefore, 31 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 22 TotalNumberOfCompositions, 2679 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1215, positive: 1141, positive conditional: 0, positive unconditional: 1141, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 986, positive: 941, positive conditional: 0, positive unconditional: 941, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 986, positive: 801, positive conditional: 0, positive unconditional: 801, negative: 185, negative conditional: 0, negative unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 185, positive: 140, positive conditional: 0, positive unconditional: 140, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 502, positive: 360, positive conditional: 0, positive unconditional: 360, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1215, positive: 200, positive conditional: 0, positive unconditional: 200, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 986, unknown conditional: 0, unknown unconditional: 986] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 125). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (8states, 40/84 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 882436 conditions, 94945 events (68847/94944 cut-off events. For 2282483/2333398 co-relation queries the response was YES. Maximal size of possible extension queue 10020. Compared 737370 event pairs, 6477 based on Foata normal form. 2034/104930 useless extension candidates. Maximal degree in co-relation 882090. Up to 46207 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 822990.0ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 820681.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1398.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 65 SDslu, 27 SDs, 0 SdLazy, 3447 SolverSat, 652 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1398.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 306.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=196119occurred in iteration=18, InterpolantAutomatonStates: 109, 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: 30.0ms SsaConstructionTime, 157.6ms SatisfiabilityAnalysisTime, 563.2ms InterpolantComputationTime, 589 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 570 ConstructedInterpolants, 0 QuantifiedInterpolants, 1483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 could not prove your program: Timeout Completed graceful shutdown