/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:30:24,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:30:24,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:30:25,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:30:25,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:30:25,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:30:25,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:30:25,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:30:25,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:30:25,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:30:25,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:30:25,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:30:25,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:30:25,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:30:25,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:30:25,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:30:25,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:30:25,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:30:25,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:30:25,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:30:25,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:30:25,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:30:25,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:30:25,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:30:25,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 13:30:25,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 13:30:25,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 13:30:25,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 13:30:25,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 13:30:25,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 13:30:25,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 13:30:25,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 13:30:25,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 13:30:25,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:30:25,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:30:25,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:30:25,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 13:30:25,061 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:30:25,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:30:25,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:30:25,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:30:25,062 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:30:25,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:30:25,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:30:25,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:30:25,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:30:25,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:30:25,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:30:25,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:30:25,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:30:25,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:30:25,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:30:25,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:30:25,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:30:25,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:30:25,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:30:25,064 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:30:25,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:30:25,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:30:25,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:30:25,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:30:25,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:30:25,299 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:30:25,301 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:30:25,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl [2021-03-24 13:30:25,314 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Bakery.bpl' [2021-03-24 13:30:25,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:30:25,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:30:25,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:30:25,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:30:25,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:30:25,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:30:25,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:30:25,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:30:25,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:30:25,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... [2021-03-24 13:30:25,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:30:25,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:30:25,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:30:25,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:30:25,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:30:25,418 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2021-03-24 13:30:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2021-03-24 13:30:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2021-03-24 13:30:25,419 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-24 13:30:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-24 13:30:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-24 13:30:25,419 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 13:30:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:30:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:30:25,420 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:30:25,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:30:25,525 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-03-24 13:30:25,526 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:30:25 BoogieIcfgContainer [2021-03-24 13:30:25,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:30:25,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:30:25,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:30:25,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:30:25,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:25" (1/2) ... [2021-03-24 13:30:25,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4467c3 and model type Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:30:25, skipping insertion in model container [2021-03-24 13:30:25,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:30:25" (2/2) ... [2021-03-24 13:30:25,531 INFO L111 eAbstractionObserver]: Analyzing ICFG Bakery.bpl [2021-03-24 13:30:25,534 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:30:25,536 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 13:30:25,537 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:30:25,554 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:30:25,565 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 13:30:25,578 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:30:25,578 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:30:25,578 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:30:25,578 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:30:25,578 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:30:25,578 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:30:25,578 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:30:25,578 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:30:25,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 62 flow [2021-03-24 13:30:25,597 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-24 13:30:25,597 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:25,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-03-24 13:30:25,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 62 flow [2021-03-24 13:30:25,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 54 flow [2021-03-24 13:30:25,602 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:30:25,608 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 24 transitions, 54 flow [2021-03-24 13:30:25,610 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 24 transitions, 54 flow [2021-03-24 13:30:25,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 54 flow [2021-03-24 13:30:25,630 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-24 13:30:25,630 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:25,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-03-24 13:30:25,634 INFO L142 LiptonReduction]: Number of co-enabled transitions 216 [2021-03-24 13:30:25,724 INFO L154 LiptonReduction]: Checked pairs total: 139 [2021-03-24 13:30:25,724 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-24 13:30:25,725 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 124 [2021-03-24 13:30:25,731 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-24 13:30:25,731 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:25,732 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:25,732 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 13:30:25,732 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:25,736 INFO L82 PathProgramCache]: Analyzing trace with hash 103815741, now seen corresponding path program 1 times [2021-03-24 13:30:25,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:25,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060941828] [2021-03-24 13:30:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:25,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:25,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:25,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:25,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:25,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:25,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:25,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060941828] [2021-03-24 13:30:25,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:25,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:25,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420095244] [2021-03-24 13:30:25,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 13:30:25,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:25,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 13:30:25,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 13:30:25,846 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2021-03-24 13:30:25,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:25,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2021-03-24 13:30:25,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:25,901 INFO L129 PetriNetUnfolder]: 17/71 cut-off events. [2021-03-24 13:30:25,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:25,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 71 events. 17/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 237 event pairs, 4 based on Foata normal form. 3/64 useless extension candidates. Maximal degree in co-relation 106. Up to 24 conditions per place. [2021-03-24 13:30:25,902 INFO L132 encePairwiseOnDemand]: 23/30 looper letters, 10 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2021-03-24 13:30:25,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 92 flow [2021-03-24 13:30:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 13:30:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 13:30:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2021-03-24 13:30:25,911 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2021-03-24 13:30:25,911 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 86 transitions. [2021-03-24 13:30:25,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 86 transitions. [2021-03-24 13:30:25,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:25,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 86 transitions. [2021-03-24 13:30:25,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,925 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,927 INFO L185 Difference]: Start difference. First operand has 25 places, 20 transitions, 46 flow. Second operand 4 states and 86 transitions. [2021-03-24 13:30:25,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 92 flow [2021-03-24 13:30:25,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:25,931 INFO L241 Difference]: Finished difference. Result has 26 places, 23 transitions, 78 flow [2021-03-24 13:30:25,933 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2021-03-24 13:30:25,933 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2021-03-24 13:30:25,933 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 78 flow [2021-03-24 13:30:25,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,933 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:25,934 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 13:30:25,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:30:25,934 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:25,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1076046703, now seen corresponding path program 1 times [2021-03-24 13:30:25,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:25,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417627501] [2021-03-24 13:30:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:25,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:25,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:25,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417627501] [2021-03-24 13:30:25,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:25,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 13:30:25,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592468574] [2021-03-24 13:30:25,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:25,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:25,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:25,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:25,977 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2021-03-24 13:30:25,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:25,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2021-03-24 13:30:25,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:26,031 INFO L129 PetriNetUnfolder]: 37/122 cut-off events. [2021-03-24 13:30:26,031 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 13:30:26,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 122 events. 37/122 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 483 event pairs, 8 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 239. Up to 49 conditions per place. [2021-03-24 13:30:26,036 INFO L132 encePairwiseOnDemand]: 21/30 looper letters, 8 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2021-03-24 13:30:26,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 120 flow [2021-03-24 13:30:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2021-03-24 13:30:26,038 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-03-24 13:30:26,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2021-03-24 13:30:26,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2021-03-24 13:30:26,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:26,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2021-03-24 13:30:26,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,043 INFO L185 Difference]: Start difference. First operand has 26 places, 23 transitions, 78 flow. Second operand 3 states and 65 transitions. [2021-03-24 13:30:26,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 120 flow [2021-03-24 13:30:26,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 13:30:26,050 INFO L241 Difference]: Finished difference. Result has 30 places, 29 transitions, 134 flow [2021-03-24 13:30:26,050 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2021-03-24 13:30:26,051 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2021-03-24 13:30:26,051 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 134 flow [2021-03-24 13:30:26,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,053 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:26,053 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:26,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:30:26,053 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:26,054 INFO L82 PathProgramCache]: Analyzing trace with hash 381295873, now seen corresponding path program 1 times [2021-03-24 13:30:26,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:26,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632377643] [2021-03-24 13:30:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:26,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:26,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:26,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632377643] [2021-03-24 13:30:26,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:26,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 13:30:26,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182447647] [2021-03-24 13:30:26,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 13:30:26,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 13:30:26,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 13:30:26,096 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2021-03-24 13:30:26,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:26,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2021-03-24 13:30:26,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:26,179 INFO L129 PetriNetUnfolder]: 55/174 cut-off events. [2021-03-24 13:30:26,179 INFO L130 PetriNetUnfolder]: For 42/46 co-relation queries the response was YES. [2021-03-24 13:30:26,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 174 events. 55/174 cut-off events. For 42/46 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 496 event pairs, 13 based on Foata normal form. 10/181 useless extension candidates. Maximal degree in co-relation 456. Up to 64 conditions per place. [2021-03-24 13:30:26,182 INFO L132 encePairwiseOnDemand]: 23/30 looper letters, 10 selfloop transitions, 14 changer transitions 0/41 dead transitions. [2021-03-24 13:30:26,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 222 flow [2021-03-24 13:30:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 13:30:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 13:30:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2021-03-24 13:30:26,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2021-03-24 13:30:26,186 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 118 transitions. [2021-03-24 13:30:26,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 118 transitions. [2021-03-24 13:30:26,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:26,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 118 transitions. [2021-03-24 13:30:26,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,189 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,189 INFO L185 Difference]: Start difference. First operand has 30 places, 29 transitions, 134 flow. Second operand 6 states and 118 transitions. [2021-03-24 13:30:26,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 222 flow [2021-03-24 13:30:26,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:26,193 INFO L241 Difference]: Finished difference. Result has 37 places, 37 transitions, 211 flow [2021-03-24 13:30:26,193 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2021-03-24 13:30:26,193 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2021-03-24 13:30:26,193 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 211 flow [2021-03-24 13:30:26,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,193 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:26,193 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:26,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:30:26,194 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:26,194 INFO L82 PathProgramCache]: Analyzing trace with hash 310846171, now seen corresponding path program 2 times [2021-03-24 13:30:26,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:26,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754372739] [2021-03-24 13:30:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:26,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:26,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:26,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754372739] [2021-03-24 13:30:26,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:26,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 13:30:26,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920804563] [2021-03-24 13:30:26,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 13:30:26,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:26,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 13:30:26,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 13:30:26,246 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2021-03-24 13:30:26,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:26,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2021-03-24 13:30:26,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:26,303 INFO L129 PetriNetUnfolder]: 59/200 cut-off events. [2021-03-24 13:30:26,303 INFO L130 PetriNetUnfolder]: For 185/191 co-relation queries the response was YES. [2021-03-24 13:30:26,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 200 events. 59/200 cut-off events. For 185/191 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 794 event pairs, 11 based on Foata normal form. 12/205 useless extension candidates. Maximal degree in co-relation 565. Up to 71 conditions per place. [2021-03-24 13:30:26,305 INFO L132 encePairwiseOnDemand]: 24/30 looper letters, 15 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2021-03-24 13:30:26,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 317 flow [2021-03-24 13:30:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 13:30:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 13:30:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-03-24 13:30:26,306 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.68 [2021-03-24 13:30:26,306 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-03-24 13:30:26,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-03-24 13:30:26,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:26,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-03-24 13:30:26,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,309 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,309 INFO L185 Difference]: Start difference. First operand has 37 places, 37 transitions, 211 flow. Second operand 5 states and 102 transitions. [2021-03-24 13:30:26,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 317 flow [2021-03-24 13:30:26,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 306 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-03-24 13:30:26,314 INFO L241 Difference]: Finished difference. Result has 44 places, 40 transitions, 286 flow [2021-03-24 13:30:26,314 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2021-03-24 13:30:26,315 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2021-03-24 13:30:26,315 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 286 flow [2021-03-24 13:30:26,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,315 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:26,315 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:26,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 13:30:26,315 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:26,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1382202857, now seen corresponding path program 1 times [2021-03-24 13:30:26,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:26,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166335790] [2021-03-24 13:30:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:26,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:26,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:26,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166335790] [2021-03-24 13:30:26,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:26,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 13:30:26,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392253489] [2021-03-24 13:30:26,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 13:30:26,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:26,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 13:30:26,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-24 13:30:26,381 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2021-03-24 13:30:26,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:26,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2021-03-24 13:30:26,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:26,425 INFO L129 PetriNetUnfolder]: 39/144 cut-off events. [2021-03-24 13:30:26,425 INFO L130 PetriNetUnfolder]: For 363/373 co-relation queries the response was YES. [2021-03-24 13:30:26,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 144 events. 39/144 cut-off events. For 363/373 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 452 event pairs, 6 based on Foata normal form. 12/152 useless extension candidates. Maximal degree in co-relation 504. Up to 47 conditions per place. [2021-03-24 13:30:26,426 INFO L132 encePairwiseOnDemand]: 24/30 looper letters, 11 selfloop transitions, 20 changer transitions 0/48 dead transitions. [2021-03-24 13:30:26,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 398 flow [2021-03-24 13:30:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 13:30:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 13:30:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2021-03-24 13:30:26,428 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2021-03-24 13:30:26,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 135 transitions. [2021-03-24 13:30:26,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 135 transitions. [2021-03-24 13:30:26,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:26,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 135 transitions. [2021-03-24 13:30:26,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,430 INFO L185 Difference]: Start difference. First operand has 44 places, 40 transitions, 286 flow. Second operand 7 states and 135 transitions. [2021-03-24 13:30:26,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 398 flow [2021-03-24 13:30:26,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 381 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-03-24 13:30:26,433 INFO L241 Difference]: Finished difference. Result has 50 places, 42 transitions, 336 flow [2021-03-24 13:30:26,433 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2021-03-24 13:30:26,434 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2021-03-24 13:30:26,434 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 336 flow [2021-03-24 13:30:26,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,434 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:26,434 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:26,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 13:30:26,435 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:26,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1265854829, now seen corresponding path program 2 times [2021-03-24 13:30:26,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:26,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387688712] [2021-03-24 13:30:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:26,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:26,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:26,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:26,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387688712] [2021-03-24 13:30:26,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:26,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 13:30:26,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343029987] [2021-03-24 13:30:26,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 13:30:26,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:26,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 13:30:26,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 13:30:26,483 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2021-03-24 13:30:26,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:26,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2021-03-24 13:30:26,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:26,517 INFO L129 PetriNetUnfolder]: 37/139 cut-off events. [2021-03-24 13:30:26,517 INFO L130 PetriNetUnfolder]: For 478/493 co-relation queries the response was YES. [2021-03-24 13:30:26,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 139 events. 37/139 cut-off events. For 478/493 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 397 event pairs, 5 based on Foata normal form. 13/148 useless extension candidates. Maximal degree in co-relation 510. Up to 45 conditions per place. [2021-03-24 13:30:26,519 INFO L132 encePairwiseOnDemand]: 24/30 looper letters, 16 selfloop transitions, 16 changer transitions 0/49 dead transitions. [2021-03-24 13:30:26,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 444 flow [2021-03-24 13:30:26,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 13:30:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 13:30:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2021-03-24 13:30:26,521 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-03-24 13:30:26,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 100 transitions. [2021-03-24 13:30:26,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 100 transitions. [2021-03-24 13:30:26,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:26,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 100 transitions. [2021-03-24 13:30:26,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,522 INFO L185 Difference]: Start difference. First operand has 50 places, 42 transitions, 336 flow. Second operand 5 states and 100 transitions. [2021-03-24 13:30:26,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 444 flow [2021-03-24 13:30:26,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 389 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:30:26,526 INFO L241 Difference]: Finished difference. Result has 49 places, 43 transitions, 334 flow [2021-03-24 13:30:26,526 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2021-03-24 13:30:26,526 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2021-03-24 13:30:26,526 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 334 flow [2021-03-24 13:30:26,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,526 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:26,526 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:26,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 13:30:26,526 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:26,527 INFO L82 PathProgramCache]: Analyzing trace with hash 234156435, now seen corresponding path program 1 times [2021-03-24 13:30:26,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:26,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225106071] [2021-03-24 13:30:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:26,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:26,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:26,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:26,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:26,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225106071] [2021-03-24 13:30:26,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:26,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:30:26,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725974804] [2021-03-24 13:30:26,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 13:30:26,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:26,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 13:30:26,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-24 13:30:26,562 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 30 [2021-03-24 13:30:26,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:26,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 30 [2021-03-24 13:30:26,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:26,595 INFO L129 PetriNetUnfolder]: 17/83 cut-off events. [2021-03-24 13:30:26,595 INFO L130 PetriNetUnfolder]: For 346/358 co-relation queries the response was YES. [2021-03-24 13:30:26,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 83 events. 17/83 cut-off events. For 346/358 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 1 based on Foata normal form. 11/94 useless extension candidates. Maximal degree in co-relation 336. Up to 21 conditions per place. [2021-03-24 13:30:26,596 INFO L132 encePairwiseOnDemand]: 24/30 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2021-03-24 13:30:26,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 425 flow [2021-03-24 13:30:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 13:30:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 13:30:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2021-03-24 13:30:26,597 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2021-03-24 13:30:26,597 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 133 transitions. [2021-03-24 13:30:26,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 133 transitions. [2021-03-24 13:30:26,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:26,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 133 transitions. [2021-03-24 13:30:26,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,598 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,598 INFO L185 Difference]: Start difference. First operand has 49 places, 43 transitions, 334 flow. Second operand 7 states and 133 transitions. [2021-03-24 13:30:26,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 425 flow [2021-03-24 13:30:26,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 401 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 13:30:26,599 INFO L241 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2021-03-24 13:30:26,600 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2021-03-24 13:30:26,600 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2021-03-24 13:30:26,600 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2021-03-24 13:30:26,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 13:30:26,603 INFO L202 PluginConnector]: Adding new model Bakery.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:30:26 BasicIcfg [2021-03-24 13:30:26,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:30:26,603 INFO L168 Benchmark]: Toolchain (without parser) took 1263.46 ms. Allocated memory is still 341.8 MB. Free memory was 321.9 MB in the beginning and 199.1 MB in the end (delta: 122.8 MB). Peak memory consumption was 124.2 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:26,604 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 341.8 MB. Free memory was 322.9 MB in the beginning and 322.9 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:30:26,604 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.86 ms. Allocated memory is still 341.8 MB. Free memory was 321.8 MB in the beginning and 320.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:26,604 INFO L168 Benchmark]: Boogie Preprocessor took 10.35 ms. Allocated memory is still 341.8 MB. Free memory was 320.3 MB in the beginning and 319.4 MB in the end (delta: 922.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:30:26,604 INFO L168 Benchmark]: RCFGBuilder took 157.24 ms. Allocated memory is still 341.8 MB. Free memory was 319.3 MB in the beginning and 309.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:26,605 INFO L168 Benchmark]: TraceAbstraction took 1075.41 ms. Allocated memory is still 341.8 MB. Free memory was 308.7 MB in the beginning and 199.1 MB in the end (delta: 109.6 MB). Peak memory consumption was 111.6 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:26,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 341.8 MB. Free memory was 322.9 MB in the beginning and 322.9 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.86 ms. Allocated memory is still 341.8 MB. Free memory was 321.8 MB in the beginning and 320.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.35 ms. Allocated memory is still 341.8 MB. Free memory was 320.3 MB in the beginning and 319.4 MB in the end (delta: 922.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 157.24 ms. Allocated memory is still 341.8 MB. Free memory was 319.3 MB in the beginning and 309.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1075.41 ms. Allocated memory is still 341.8 MB. Free memory was 308.7 MB in the beginning and 199.1 MB in the end (delta: 109.6 MB). Peak memory consumption was 111.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 114.3ms, 29 PlacesBefore, 25 PlacesAfterwards, 24 TransitionsBefore, 20 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 139 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 61, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 33, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 33, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 61, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 33, unknown conditional: 0, unknown unconditional: 33] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 53]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1025.4ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 467.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 150.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 65 SDslu, 18 SDs, 0 SdLazy, 134 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 119.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.9ms SsaConstructionTime, 48.7ms SatisfiabilityAnalysisTime, 239.6ms InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 15/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...