/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-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:18:43,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:18:43,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:18:43,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 00:18:43,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 00:18:43,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 00:18:43,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 00:18:43,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 00:18:43,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 00:18:43,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 00:18:43,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 00:18:43,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 00:18:43,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:18:43,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:18:43,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:18:43,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:18:43,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:18:43,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:18:43,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:18:43,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:18:43,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:18:43,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:18:43,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:18:43,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:18:43,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 00:18:43,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 00:18:43,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 00:18:43,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 00:18:43,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-25 00:18:43,256 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:18:43,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:18:43,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:18:43,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:18:43,260 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:18:43,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:18:43,260 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:18:43,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:18:43,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:18:43,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:18:43,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:18:43,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:18:43,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:18:43,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:18:43,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:18:43,262 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:18:43,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:18:43,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:18:43,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:18:43,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:18:43,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:18:43,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:18:43,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:18:43,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:18:43,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:18:43,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:18:43,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:18:43,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:18:43,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:18:43,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:18:43,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:18:43,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:18:43,575 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:18:43,580 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:18:43,581 INFO L432 ainManager$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 [2021-03-25 00:18:43,581 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl' [2021-03-25 00:18:43,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:18:43,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:18:43,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:43,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:18:43,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:18:44,001 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 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,009 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 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:44,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:18:44,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:18:44,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:18:44,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/1) ... [2021-03-25 00:18:44,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:18:44,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:18:44,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:18:44,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:18:44,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:18:44,098 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:18:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:18:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:18:44,098 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:18:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:18:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:18:44,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:18:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:18:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:18:44,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 00:18:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 00:18:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 00:18:44,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 00:18:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 00:18:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 00:18:44,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-25 00:18:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-25 00:18:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-25 00:18:44,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-25 00:18:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-25 00:18:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-25 00:18:44,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-03-25 00:18:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-03-25 00:18:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-03-25 00:18:44,102 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 00:18:44,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:18:44,303 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:18:44,305 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:44 BoogieIcfgContainer [2021-03-25 00:18:44,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:18:44,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:18:44,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:18:44,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:18:44,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:43" (1/2) ... [2021-03-25 00:18:44,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426bcc45 and model type ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:18:44, skipping insertion in model container [2021-03-25 00:18:44,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:44" (2/2) ... [2021-03-25 00:18:44,311 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-7.wvr.bpl [2021-03-25 00:18:44,315 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:18:44,363 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:18:44,364 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:18:44,487 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-03-25 00:18:44,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-25 00:18:44,534 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:18:44,534 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:18:44,534 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:18:44,534 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:18:44,534 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:18:44,534 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:18:44,534 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:18:44,534 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:18:44,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 62 transitions, 180 flow [2021-03-25 00:18:44,583 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-03-25 00:18:44,583 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 00:18:44,585 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. [2021-03-25 00:18:44,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 62 transitions, 180 flow [2021-03-25 00:18:44,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 53 transitions, 148 flow [2021-03-25 00:18:44,590 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:18:44,600 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 53 transitions, 148 flow [2021-03-25 00:18:44,602 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 53 transitions, 148 flow [2021-03-25 00:18:44,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 53 transitions, 148 flow [2021-03-25 00:18:44,630 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-03-25 00:18:44,630 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 00:18:44,631 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. [2021-03-25 00:18:44,637 INFO L142 LiptonReduction]: Number of co-enabled transitions 1542 [2021-03-25 00:18:46,172 INFO L154 LiptonReduction]: Checked pairs total: 2297 [2021-03-25 00:18:46,172 INFO L156 LiptonReduction]: Total number of compositions: 21 [2021-03-25 00:18:46,175 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1586 [2021-03-25 00:18:46,203 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-25 00:18:46,204 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 00:18:46,204 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:46,205 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:46,205 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]=== [2021-03-25 00:18:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1689739560, now seen corresponding path program 1 times [2021-03-25 00:18:46,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:46,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991665611] [2021-03-25 00:18:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:46,500 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-25 00:18:46,502 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-25 00:18:46,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:46,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:18:46,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:46,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:46,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:46,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:46,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:46,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:46,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:18:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:46,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991665611] [2021-03-25 00:18:46,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:46,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:18:46,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801207301] [2021-03-25 00:18:46,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:46,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:46,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:46,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:46,557 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 83 [2021-03-25 00:18:46,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 32 transitions, 106 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) [2021-03-25 00:18:46,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:46,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 83 [2021-03-25 00:18:46,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:48,308 INFO L129 PetriNetUnfolder]: 15335/20004 cut-off events. [2021-03-25 00:18:48,309 INFO L130 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2021-03-25 00:18:48,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40001 conditions, 20004 events. 15335/20004 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 107733 event pairs, 7502 based on Foata normal form. 1/19911 useless extension candidates. Maximal degree in co-relation 39963. Up to 10206 conditions per place. [2021-03-25 00:18:48,454 INFO L132 encePairwiseOnDemand]: 66/83 looper letters, 33 selfloop transitions, 15 changer transitions 1/64 dead transitions. [2021-03-25 00:18:48,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 268 flow [2021-03-25 00:18:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 295 transitions. [2021-03-25 00:18:48,466 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2021-03-25 00:18:48,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 295 transitions. [2021-03-25 00:18:48,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 295 transitions. [2021-03-25 00:18:48,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:48,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 295 transitions. [2021-03-25 00:18:48,509 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) [2021-03-25 00:18:48,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:48,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:48,516 INFO L185 Difference]: Start difference. First operand has 54 places, 32 transitions, 106 flow. Second operand 5 states and 295 transitions. [2021-03-25 00:18:48,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 268 flow [2021-03-25 00:18:48,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 240 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-03-25 00:18:48,536 INFO L241 Difference]: Finished difference. Result has 47 places, 45 transitions, 187 flow [2021-03-25 00:18:48,537 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2021-03-25 00:18:48,538 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2021-03-25 00:18:48,538 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 187 flow [2021-03-25 00:18:48,539 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) [2021-03-25 00:18:48,539 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:48,539 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:48,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:18:48,539 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]=== [2021-03-25 00:18:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash 393493870, now seen corresponding path program 2 times [2021-03-25 00:18:48,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:48,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871345637] [2021-03-25 00:18:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:48,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:48,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:48,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:48,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:48,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:48,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:48,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:48,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:48,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:48,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:48,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:48,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:48,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871345637] [2021-03-25 00:18:48,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:48,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:18:48,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669439720] [2021-03-25 00:18:48,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:18:48,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:48,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:18:48,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:18:48,637 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:18:48,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 187 flow. Second operand has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:48,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:48,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:18:48,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:53,130 INFO L129 PetriNetUnfolder]: 49280/64155 cut-off events. [2021-03-25 00:18:53,135 INFO L130 PetriNetUnfolder]: For 34113/36702 co-relation queries the response was YES. [2021-03-25 00:18:53,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196609 conditions, 64155 events. 49280/64155 cut-off events. For 34113/36702 co-relation queries the response was YES. Maximal size of possible extension queue 3538. Compared 383667 event pairs, 10497 based on Foata normal form. 473/64526 useless extension candidates. Maximal degree in co-relation 195802. Up to 31018 conditions per place. [2021-03-25 00:18:53,555 INFO L132 encePairwiseOnDemand]: 67/83 looper letters, 41 selfloop transitions, 73 changer transitions 0/129 dead transitions. [2021-03-25 00:18:53,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 129 transitions, 776 flow [2021-03-25 00:18:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:18:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:18:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 366 transitions. [2021-03-25 00:18:53,560 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6299483648881239 [2021-03-25 00:18:53,560 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 366 transitions. [2021-03-25 00:18:53,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 366 transitions. [2021-03-25 00:18:53,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:53,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 366 transitions. [2021-03-25 00:18:53,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.285714285714285) internal successors, (366), 7 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,567 INFO L185 Difference]: Start difference. First operand has 47 places, 45 transitions, 187 flow. Second operand 7 states and 366 transitions. [2021-03-25 00:18:53,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 129 transitions, 776 flow [2021-03-25 00:18:53,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 129 transitions, 720 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 00:18:53,581 INFO L241 Difference]: Finished difference. Result has 53 places, 110 transitions, 725 flow [2021-03-25 00:18:53,581 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=725, PETRI_PLACES=53, PETRI_TRANSITIONS=110} [2021-03-25 00:18:53,583 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2021-03-25 00:18:53,583 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 110 transitions, 725 flow [2021-03-25 00:18:53,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,584 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:53,584 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:53,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:18:53,584 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]=== [2021-03-25 00:18:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash 464179424, now seen corresponding path program 3 times [2021-03-25 00:18:53,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:53,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104699553] [2021-03-25 00:18:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:53,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:53,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:53,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:53,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:53,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:53,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:53,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:53,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:53,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104699553] [2021-03-25 00:18:53,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:53,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:53,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796437257] [2021-03-25 00:18:53,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:53,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:53,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:53,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:53,636 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:18:53,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 110 transitions, 725 flow. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:53,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:53,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:18:53,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:57,821 INFO L129 PetriNetUnfolder]: 50096/65413 cut-off events. [2021-03-25 00:18:57,821 INFO L130 PetriNetUnfolder]: For 86137/99670 co-relation queries the response was YES. [2021-03-25 00:18:57,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292253 conditions, 65413 events. 50096/65413 cut-off events. For 86137/99670 co-relation queries the response was YES. Maximal size of possible extension queue 3647. Compared 387798 event pairs, 8938 based on Foata normal form. 212/65531 useless extension candidates. Maximal degree in co-relation 291186. Up to 62512 conditions per place. [2021-03-25 00:18:58,282 INFO L132 encePairwiseOnDemand]: 69/83 looper letters, 121 selfloop transitions, 74 changer transitions 0/210 dead transitions. [2021-03-25 00:18:58,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 210 transitions, 1856 flow [2021-03-25 00:18:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2021-03-25 00:18:58,283 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6096385542168675 [2021-03-25 00:18:58,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 253 transitions. [2021-03-25 00:18:58,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 253 transitions. [2021-03-25 00:18:58,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:58,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 253 transitions. [2021-03-25 00:18:58,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:58,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:58,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:58,286 INFO L185 Difference]: Start difference. First operand has 53 places, 110 transitions, 725 flow. Second operand 5 states and 253 transitions. [2021-03-25 00:18:58,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 210 transitions, 1856 flow [2021-03-25 00:18:58,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 210 transitions, 1780 flow, removed 34 selfloop flow, removed 1 redundant places. [2021-03-25 00:18:58,425 INFO L241 Difference]: Finished difference. Result has 58 places, 176 transitions, 1506 flow [2021-03-25 00:18:58,426 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1506, PETRI_PLACES=58, PETRI_TRANSITIONS=176} [2021-03-25 00:18:58,426 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2021-03-25 00:18:58,426 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 176 transitions, 1506 flow [2021-03-25 00:18:58,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:58,426 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:58,427 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:58,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:18:58,427 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]=== [2021-03-25 00:18:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash -149921324, now seen corresponding path program 4 times [2021-03-25 00:18:58,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:58,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553426675] [2021-03-25 00:18:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:58,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:58,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:58,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:58,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:58,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:58,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:58,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:58,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:58,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:58,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:18:58,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553426675] [2021-03-25 00:18:58,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:58,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:18:58,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780736314] [2021-03-25 00:18:58,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:18:58,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:18:58,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:18:58,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:18:58,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 176 transitions, 1506 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:18:58,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:58,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:18:58,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:05,305 INFO L129 PetriNetUnfolder]: 72251/95122 cut-off events. [2021-03-25 00:19:05,305 INFO L130 PetriNetUnfolder]: For 205592/221862 co-relation queries the response was YES. [2021-03-25 00:19:05,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 451478 conditions, 95122 events. 72251/95122 cut-off events. For 205592/221862 co-relation queries the response was YES. Maximal size of possible extension queue 5472. Compared 595414 event pairs, 9200 based on Foata normal form. 951/95980 useless extension candidates. Maximal degree in co-relation 449893. Up to 57952 conditions per place. [2021-03-25 00:19:05,904 INFO L132 encePairwiseOnDemand]: 67/83 looper letters, 113 selfloop transitions, 174 changer transitions 0/302 dead transitions. [2021-03-25 00:19:05,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 302 transitions, 3174 flow [2021-03-25 00:19:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:19:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:19:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2021-03-25 00:19:05,905 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6224899598393574 [2021-03-25 00:19:05,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 310 transitions. [2021-03-25 00:19:05,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 310 transitions. [2021-03-25 00:19:05,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:05,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 310 transitions. [2021-03-25 00:19:05,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:05,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:05,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:05,908 INFO L185 Difference]: Start difference. First operand has 58 places, 176 transitions, 1506 flow. Second operand 6 states and 310 transitions. [2021-03-25 00:19:05,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 302 transitions, 3174 flow [2021-03-25 00:19:06,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 302 transitions, 3166 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 00:19:06,585 INFO L241 Difference]: Finished difference. Result has 65 places, 278 transitions, 3209 flow [2021-03-25 00:19:06,586 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3209, PETRI_PLACES=65, PETRI_TRANSITIONS=278} [2021-03-25 00:19:06,586 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2021-03-25 00:19:06,586 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 278 transitions, 3209 flow [2021-03-25 00:19:06,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:06,586 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:06,587 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:19:06,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 00:19:06,587 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]=== [2021-03-25 00:19:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:06,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1113668976, now seen corresponding path program 5 times [2021-03-25 00:19:06,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:06,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718197628] [2021-03-25 00:19:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:06,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:06,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:06,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:06,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:06,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:06,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:06,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:06,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:06,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718197628] [2021-03-25 00:19:06,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:06,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:19:06,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836961519] [2021-03-25 00:19:06,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:19:06,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:06,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:19:06,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:19:06,628 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:19:06,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 278 transitions, 3209 flow. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:06,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:06,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:19:06,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:14,739 INFO L129 PetriNetUnfolder]: 72994/96437 cut-off events. [2021-03-25 00:19:14,740 INFO L130 PetriNetUnfolder]: For 311853/342380 co-relation queries the response was YES. [2021-03-25 00:19:15,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 552681 conditions, 96437 events. 72994/96437 cut-off events. For 311853/342380 co-relation queries the response was YES. Maximal size of possible extension queue 5546. Compared 610526 event pairs, 14727 based on Foata normal form. 428/96752 useless extension candidates. Maximal degree in co-relation 550749. Up to 91607 conditions per place. [2021-03-25 00:19:15,437 INFO L132 encePairwiseOnDemand]: 69/83 looper letters, 205 selfloop transitions, 143 changer transitions 0/363 dead transitions. [2021-03-25 00:19:15,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 363 transitions, 4914 flow [2021-03-25 00:19:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:19:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:19:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2021-03-25 00:19:15,438 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6096385542168675 [2021-03-25 00:19:15,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 253 transitions. [2021-03-25 00:19:15,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 253 transitions. [2021-03-25 00:19:15,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:15,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 253 transitions. [2021-03-25 00:19:15,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:15,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:15,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:15,440 INFO L185 Difference]: Start difference. First operand has 65 places, 278 transitions, 3209 flow. Second operand 5 states and 253 transitions. [2021-03-25 00:19:15,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 363 transitions, 4914 flow [2021-03-25 00:19:17,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 363 transitions, 4902 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 00:19:17,558 INFO L241 Difference]: Finished difference. Result has 69 places, 332 transitions, 4338 flow [2021-03-25 00:19:17,559 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4338, PETRI_PLACES=69, PETRI_TRANSITIONS=332} [2021-03-25 00:19:17,559 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2021-03-25 00:19:17,559 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 332 transitions, 4338 flow [2021-03-25 00:19:17,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:17,559 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:17,559 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:19:17,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 00:19:17,559 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]=== [2021-03-25 00:19:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash 959712120, now seen corresponding path program 6 times [2021-03-25 00:19:17,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:17,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579855247] [2021-03-25 00:19:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:17,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:17,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:17,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:17,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:17,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:17,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:17,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:17,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:17,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:17,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:17,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:17,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:17,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:17,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579855247] [2021-03-25 00:19:17,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:17,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 00:19:17,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084081855] [2021-03-25 00:19:17,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 00:19:17,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:17,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 00:19:17,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-25 00:19:17,609 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:19:17,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 332 transitions, 4338 flow. Second operand has 8 states, 8 states have (on average 42.125) internal successors, (337), 8 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:17,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:17,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:19:17,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:27,792 INFO L129 PetriNetUnfolder]: 83883/111543 cut-off events. [2021-03-25 00:19:27,792 INFO L130 PetriNetUnfolder]: For 411465/448574 co-relation queries the response was YES. [2021-03-25 00:19:28,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 631826 conditions, 111543 events. 83883/111543 cut-off events. For 411465/448574 co-relation queries the response was YES. Maximal size of possible extension queue 6288. Compared 729962 event pairs, 11115 based on Foata normal form. 813/112219 useless extension candidates. Maximal degree in co-relation 629914. Up to 54625 conditions per place. [2021-03-25 00:19:28,864 INFO L132 encePairwiseOnDemand]: 68/83 looper letters, 49 selfloop transitions, 643 changer transitions 0/707 dead transitions. [2021-03-25 00:19:28,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 707 transitions, 10343 flow [2021-03-25 00:19:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 00:19:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 00:19:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 423 transitions. [2021-03-25 00:19:28,873 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6370481927710844 [2021-03-25 00:19:28,873 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 423 transitions. [2021-03-25 00:19:28,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 423 transitions. [2021-03-25 00:19:28,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:28,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 423 transitions. [2021-03-25 00:19:28,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 52.875) internal successors, (423), 8 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:28,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:28,876 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:28,876 INFO L185 Difference]: Start difference. First operand has 69 places, 332 transitions, 4338 flow. Second operand 8 states and 423 transitions. [2021-03-25 00:19:28,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 707 transitions, 10343 flow [2021-03-25 00:19:29,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 707 transitions, 10068 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:19:29,427 INFO L241 Difference]: Finished difference. Result has 77 places, 684 transitions, 10778 flow [2021-03-25 00:19:29,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10778, PETRI_PLACES=77, PETRI_TRANSITIONS=684} [2021-03-25 00:19:29,428 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2021-03-25 00:19:29,428 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 684 transitions, 10778 flow [2021-03-25 00:19:29,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 42.125) internal successors, (337), 8 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:29,428 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:29,429 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:19:29,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 00:19:29,429 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]=== [2021-03-25 00:19:29,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:29,429 INFO L82 PathProgramCache]: Analyzing trace with hash 385669716, now seen corresponding path program 7 times [2021-03-25 00:19:29,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:29,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593998896] [2021-03-25 00:19:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:29,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:29,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:29,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:29,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:29,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:29,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:29,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:29,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593998896] [2021-03-25 00:19:29,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:29,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:19:29,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053967307] [2021-03-25 00:19:29,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:19:29,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:29,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:19:29,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:19:29,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:19:29,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 684 transitions, 10778 flow. Second operand has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:29,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:29,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:19:29,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:19:44,127 INFO L129 PetriNetUnfolder]: 88384/117798 cut-off events. [2021-03-25 00:19:44,127 INFO L130 PetriNetUnfolder]: For 758084/833669 co-relation queries the response was YES. [2021-03-25 00:19:44,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 856447 conditions, 117798 events. 88384/117798 cut-off events. For 758084/833669 co-relation queries the response was YES. Maximal size of possible extension queue 6618. Compared 777234 event pairs, 11845 based on Foata normal form. 1751/119419 useless extension candidates. Maximal degree in co-relation 854322. Up to 58117 conditions per place. [2021-03-25 00:19:45,453 INFO L132 encePairwiseOnDemand]: 68/83 looper letters, 130 selfloop transitions, 696 changer transitions 0/841 dead transitions. [2021-03-25 00:19:45,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 841 transitions, 15021 flow [2021-03-25 00:19:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:19:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:19:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 367 transitions. [2021-03-25 00:19:45,455 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6316695352839932 [2021-03-25 00:19:45,455 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 367 transitions. [2021-03-25 00:19:45,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 367 transitions. [2021-03-25 00:19:45,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:19:45,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 367 transitions. [2021-03-25 00:19:45,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:45,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:45,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:45,457 INFO L185 Difference]: Start difference. First operand has 77 places, 684 transitions, 10778 flow. Second operand 7 states and 367 transitions. [2021-03-25 00:19:45,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 841 transitions, 15021 flow [2021-03-25 00:19:50,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 841 transitions, 14883 flow, removed 65 selfloop flow, removed 1 redundant places. [2021-03-25 00:19:50,603 INFO L241 Difference]: Finished difference. Result has 83 places, 814 transitions, 14634 flow [2021-03-25 00:19:50,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=10664, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=566, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14634, PETRI_PLACES=83, PETRI_TRANSITIONS=814} [2021-03-25 00:19:50,604 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2021-03-25 00:19:50,604 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 814 transitions, 14634 flow [2021-03-25 00:19:50,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:50,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:19:50,604 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:19:50,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 00:19:50,604 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]=== [2021-03-25 00:19:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:19:50,605 INFO L82 PathProgramCache]: Analyzing trace with hash -2060778768, now seen corresponding path program 8 times [2021-03-25 00:19:50,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:19:50,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337975924] [2021-03-25 00:19:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:19:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:19:50,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:50,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:19:50,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:50,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:50,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:50,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:50,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:50,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:50,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:50,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:19:50,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:19:50,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:19:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:19:50,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337975924] [2021-03-25 00:19:50,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:19:50,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:19:50,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077914310] [2021-03-25 00:19:50,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:19:50,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:19:50,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:19:50,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:19:50,644 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:19:50,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 814 transitions, 14634 flow. Second operand has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:19:50,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:19:50,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:19:50,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:20:09,671 INFO L129 PetriNetUnfolder]: 94067/125515 cut-off events. [2021-03-25 00:20:09,671 INFO L130 PetriNetUnfolder]: For 1053260/1108410 co-relation queries the response was YES. [2021-03-25 00:20:10,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 981633 conditions, 125515 events. 94067/125515 cut-off events. For 1053260/1108410 co-relation queries the response was YES. Maximal size of possible extension queue 7128. Compared 835987 event pairs, 12168 based on Foata normal form. 2468/127866 useless extension candidates. Maximal degree in co-relation 979657. Up to 62577 conditions per place. [2021-03-25 00:20:10,980 INFO L132 encePairwiseOnDemand]: 68/83 looper letters, 130 selfloop transitions, 1001 changer transitions 0/1146 dead transitions. [2021-03-25 00:20:10,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 1146 transitions, 23328 flow [2021-03-25 00:20:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:20:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:20:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 367 transitions. [2021-03-25 00:20:10,981 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6316695352839932 [2021-03-25 00:20:10,981 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 367 transitions. [2021-03-25 00:20:10,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 367 transitions. [2021-03-25 00:20:10,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:20:10,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 367 transitions. [2021-03-25 00:20:10,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:10,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:10,984 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:10,984 INFO L185 Difference]: Start difference. First operand has 83 places, 814 transitions, 14634 flow. Second operand 7 states and 367 transitions. [2021-03-25 00:20:10,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 1146 transitions, 23328 flow [2021-03-25 00:20:15,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 1146 transitions, 22178 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:20:15,695 INFO L241 Difference]: Finished difference. Result has 86 places, 1121 transitions, 22211 flow [2021-03-25 00:20:15,695 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=13789, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=694, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22211, PETRI_PLACES=86, PETRI_TRANSITIONS=1121} [2021-03-25 00:20:15,696 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2021-03-25 00:20:15,696 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 1121 transitions, 22211 flow [2021-03-25 00:20:15,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:15,696 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:15,696 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:20:15,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 00:20:15,696 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]=== [2021-03-25 00:20:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:15,697 INFO L82 PathProgramCache]: Analyzing trace with hash -809741794, now seen corresponding path program 9 times [2021-03-25 00:20:15,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:15,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157584415] [2021-03-25 00:20:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:15,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:15,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:15,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:15,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:15,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:15,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:15,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:15,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:15,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:15,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:15,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:15,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:20:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:20:15,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157584415] [2021-03-25 00:20:15,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:15,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 00:20:15,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169726406] [2021-03-25 00:20:15,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 00:20:15,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 00:20:15,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 00:20:15,750 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:20:15,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 1121 transitions, 22211 flow. Second operand has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:15,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:15,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:20:15,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:20:38,488 INFO L129 PetriNetUnfolder]: 99741/133575 cut-off events. [2021-03-25 00:20:38,488 INFO L130 PetriNetUnfolder]: For 1396654/1457338 co-relation queries the response was YES. [2021-03-25 00:20:39,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1093753 conditions, 133575 events. 99741/133575 cut-off events. For 1396654/1457338 co-relation queries the response was YES. Maximal size of possible extension queue 7647. Compared 905769 event pairs, 12325 based on Foata normal form. 2979/136429 useless extension candidates. Maximal degree in co-relation 1091842. Up to 67009 conditions per place. [2021-03-25 00:20:39,982 INFO L132 encePairwiseOnDemand]: 68/83 looper letters, 130 selfloop transitions, 1474 changer transitions 0/1619 dead transitions. [2021-03-25 00:20:39,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 1619 transitions, 36046 flow [2021-03-25 00:20:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 00:20:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 00:20:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 367 transitions. [2021-03-25 00:20:39,984 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6316695352839932 [2021-03-25 00:20:39,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 367 transitions. [2021-03-25 00:20:39,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 367 transitions. [2021-03-25 00:20:39,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:20:39,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 367 transitions. [2021-03-25 00:20:39,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:39,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:39,986 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:39,986 INFO L185 Difference]: Start difference. First operand has 86 places, 1121 transitions, 22211 flow. Second operand 7 states and 367 transitions. [2021-03-25 00:20:39,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 1619 transitions, 36046 flow [2021-03-25 00:20:46,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 1619 transitions, 34423 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:20:46,929 INFO L241 Difference]: Finished difference. Result has 89 places, 1596 transitions, 34779 flow [2021-03-25 00:20:46,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=21061, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=999, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34779, PETRI_PLACES=89, PETRI_TRANSITIONS=1596} [2021-03-25 00:20:46,931 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2021-03-25 00:20:46,931 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 1596 transitions, 34779 flow [2021-03-25 00:20:46,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:46,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:20:46,931 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:20:46,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 00:20:46,931 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]=== [2021-03-25 00:20:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:20:46,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1746882146, now seen corresponding path program 10 times [2021-03-25 00:20:46,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:20:46,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827689748] [2021-03-25 00:20:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:20:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:20:46,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:20:46,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:46,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:46,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:20:46,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:20:46,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:20:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:20:46,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827689748] [2021-03-25 00:20:46,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:20:46,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 00:20:46,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212887068] [2021-03-25 00:20:46,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 00:20:46,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:20:46,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 00:20:46,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 00:20:46,965 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-25 00:20:46,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 1596 transitions, 34779 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:20:46,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:20:46,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-25 00:20:46,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:21:17,938 INFO L129 PetriNetUnfolder]: 106098/142764 cut-off events. [2021-03-25 00:21:17,938 INFO L130 PetriNetUnfolder]: For 1749596/1809630 co-relation queries the response was YES. [2021-03-25 00:21:18,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1221798 conditions, 142764 events. 106098/142764 cut-off events. For 1749596/1809630 co-relation queries the response was YES. Maximal size of possible extension queue 8283. Compared 986765 event pairs, 14158 based on Foata normal form. 2993/145624 useless extension candidates. Maximal degree in co-relation 1219736. Up to 74277 conditions per place. [2021-03-25 00:21:19,516 INFO L132 encePairwiseOnDemand]: 68/83 looper letters, 385 selfloop transitions, 1581 changer transitions 0/1981 dead transitions. [2021-03-25 00:21:19,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 1981 transitions, 47635 flow [2021-03-25 00:21:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 00:21:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 00:21:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 311 transitions. [2021-03-25 00:21:19,518 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6244979919678715 [2021-03-25 00:21:19,518 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 311 transitions. [2021-03-25 00:21:19,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 311 transitions. [2021-03-25 00:21:19,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:21:19,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 311 transitions. [2021-03-25 00:21:19,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:19,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:19,520 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:21:19,520 INFO L185 Difference]: Start difference. First operand has 89 places, 1596 transitions, 34779 flow. Second operand 6 states and 311 transitions. [2021-03-25 00:21:19,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 1981 transitions, 47635 flow