/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/popl20-more/min-le-max.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 02:11:52,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 02:11:52,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 02:11:52,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-12 02:11:52,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-12 02:11:52,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-12 02:11:52,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-12 02:11:52,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-12 02:11:52,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-12 02:11:52,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-12 02:11:52,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-12 02:11:52,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-12 02:11:52,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 02:11:52,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 02:11:52,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 02:11:52,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 02:11:52,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 02:11:52,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 02:11:52,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 02:11:52,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 02:11:52,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 02:11:52,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 02:11:52,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 02:11:52,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 02:11:52,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 02:11:52,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-12 02:11:52,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-12 02:11:52,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-12 02:11:52,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-12 02:11:53,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 02:11:53,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 02:11:53,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 02:11:53,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 02:11:53,024 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 02:11:53,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 02:11:53,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 02:11:53,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 02:11:53,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 02:11:53,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 02:11:53,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 02:11:53,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 02:11:53,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 02:11:53,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 02:11:53,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 02:11:53,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 02:11:53,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 02:11:53,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 02:11:53,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 02:11:53,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 02:11:53,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 02:11:53,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 02:11:53,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 02:11:53,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 02:11:53,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 02:11:53,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 02:11:53,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 02:11:53,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 02:11:53,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 02:11:53,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 02:11:53,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 02:11:53,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 02:11:53,272 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 02:11:53,273 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 02:11:53,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl [2021-03-12 02:11:53,274 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl' [2021-03-12 02:11:53,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 02:11:53,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 02:11:53,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 02:11:53,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 02:11:53,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 02:11:53,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 02:11:53,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 02:11:53,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 02:11:53,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 02:11:53,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... [2021-03-12 02:11:53,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 02:11:53,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 02:11:53,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 02:11:53,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 02:11:53,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 02:11:53,382 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 02:11:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 02:11:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 02:11:53,383 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 02:11:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 02:11:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 02:11:53,383 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 02:11:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 02:11:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 02:11:53,383 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 02:11:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 02:11:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 02:11:53,384 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 02:11:53,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 02:11:53,544 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 02:11:53,545 INFO L202 PluginConnector]: Adding new model min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 02:11:53 BoogieIcfgContainer [2021-03-12 02:11:53,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 02:11:53,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 02:11:53,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 02:11:53,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 02:11:53,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 02:11:53" (1/2) ... [2021-03-12 02:11:53,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7923f5a3 and model type min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 02:11:53, skipping insertion in model container [2021-03-12 02:11:53,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 02:11:53" (2/2) ... [2021-03-12 02:11:53,549 INFO L111 eAbstractionObserver]: Analyzing ICFG min-le-max.wvr.bpl [2021-03-12 02:11:53,552 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 02:11:53,554 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 02:11:53,556 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 02:11:53,615 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-12 02:11:53,626 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-12 02:11:53,655 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 02:11:53,656 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 02:11:53,656 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 02:11:53,656 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 02:11:53,656 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 02:11:53,656 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 02:11:53,656 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 02:11:53,656 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 02:11:53,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 76 flow [2021-03-12 02:11:53,697 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-12 02:11:53,697 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 02:11:53,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 2/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2021-03-12 02:11:53,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 26 transitions, 76 flow [2021-03-12 02:11:53,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 21 transitions, 60 flow [2021-03-12 02:11:53,707 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 02:11:53,714 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 21 transitions, 60 flow [2021-03-12 02:11:53,719 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 21 transitions, 60 flow [2021-03-12 02:11:53,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 21 transitions, 60 flow [2021-03-12 02:11:53,732 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-12 02:11:53,732 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 02:11:53,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 2/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2021-03-12 02:11:53,735 INFO L116 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-12 02:11:53,927 INFO L131 LiptonReduction]: Checked pairs total: 147 [2021-03-12 02:11:53,928 INFO L133 LiptonReduction]: Total number of compositions: 8 [2021-03-12 02:11:53,928 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 223 [2021-03-12 02:11:53,942 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2021-03-12 02:11:53,942 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-12 02:11:53,942 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:11:53,943 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:11:53,943 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:11:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:11:53,947 INFO L82 PathProgramCache]: Analyzing trace with hash -7563022, now seen corresponding path program 1 times [2021-03-12 02:11:53,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:11:53,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563034489] [2021-03-12 02:11:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:11:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:11:54,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:11:54,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:11:54,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563034489] [2021-03-12 02:11:54,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 02:11:54,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 02:11:54,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314704002] [2021-03-12 02:11:54,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-12 02:11:54,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:11:54,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-12 02:11:54,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-12 02:11:54,048 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 34 [2021-03-12 02:11:54,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:11:54,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 34 [2021-03-12 02:11:54,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:11:54,081 INFO L129 PetriNetUnfolder]: 11/35 cut-off events. [2021-03-12 02:11:54,081 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-12 02:11:54,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 35 events. 11/35 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2021-03-12 02:11:54,082 INFO L132 encePairwiseOnDemand]: 29/34 looper letters, 4 selfloop transitions, 3 changer transitions 5/20 dead transitions. [2021-03-12 02:11:54,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 82 flow [2021-03-12 02:11:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 02:11:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 02:11:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-03-12 02:11:54,089 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7294117647058823 [2021-03-12 02:11:54,089 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-03-12 02:11:54,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-03-12 02:11:54,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:11:54,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-03-12 02:11:54,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,101 INFO L185 Difference]: Start difference. First operand has 21 places, 13 transitions, 44 flow. Second operand 5 states and 124 transitions. [2021-03-12 02:11:54,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 82 flow [2021-03-12 02:11:54,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 70 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-12 02:11:54,106 INFO L241 Difference]: Finished difference. Result has 22 places, 15 transitions, 59 flow [2021-03-12 02:11:54,106 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2021-03-12 02:11:54,107 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2021-03-12 02:11:54,107 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 59 flow [2021-03-12 02:11:54,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,107 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 02:11:54,107 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 02:11:54,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 02:11:54,108 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 02:11:54,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 02:11:54,108 INFO L82 PathProgramCache]: Analyzing trace with hash 896695080, now seen corresponding path program 1 times [2021-03-12 02:11:54,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 02:11:54,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998501908] [2021-03-12 02:11:54,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 02:11:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:11:54,175 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-03-12 02:11:54,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-12 02:11:54,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:11:54,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998501908] [2021-03-12 02:11:54,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810967812] [2021-03-12 02:11:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 02:11:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 02:11:54,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-12 02:11:54,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 02:11:54,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 02:11:54,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:11:54,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 02:11:54,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-12 02:11:54,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 02:11:54,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 02:11:54,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 02:11:54,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 02:11:54,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 02:11:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 02:11:54,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 02:11:54,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-03-12 02:11:54,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626786739] [2021-03-12 02:11:54,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 02:11:54,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 02:11:54,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 02:11:54,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-12 02:11:54,310 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2021-03-12 02:11:54,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 59 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 02:11:54,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2021-03-12 02:11:54,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 02:11:54,422 INFO L129 PetriNetUnfolder]: 25/57 cut-off events. [2021-03-12 02:11:54,423 INFO L130 PetriNetUnfolder]: For 32/40 co-relation queries the response was YES. [2021-03-12 02:11:54,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 57 events. 25/57 cut-off events. For 32/40 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 152 event pairs, 1 based on Foata normal form. 7/62 useless extension candidates. Maximal degree in co-relation 154. Up to 29 conditions per place. [2021-03-12 02:11:54,423 INFO L132 encePairwiseOnDemand]: 28/34 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-12 02:11:54,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 147 flow [2021-03-12 02:11:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 02:11:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 02:11:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2021-03-12 02:11:54,424 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5168067226890757 [2021-03-12 02:11:54,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 123 transitions. [2021-03-12 02:11:54,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 123 transitions. [2021-03-12 02:11:54,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 02:11:54,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 123 transitions. [2021-03-12 02:11:54,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,426 INFO L185 Difference]: Start difference. First operand has 22 places, 15 transitions, 59 flow. Second operand 7 states and 123 transitions. [2021-03-12 02:11:54,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 147 flow [2021-03-12 02:11:54,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 27 transitions, 128 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-03-12 02:11:54,428 INFO L241 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2021-03-12 02:11:54,428 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2021-03-12 02:11:54,428 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2021-03-12 02:11:54,428 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2021-03-12 02:11:54,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 02:11:54,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-03-12 02:11:54,645 INFO L202 PluginConnector]: Adding new model min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 02:11:54 BasicIcfg [2021-03-12 02:11:54,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 02:11:54,646 INFO L168 Benchmark]: Toolchain (without parser) took 1346.49 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 236.5 MB in the beginning and 310.6 MB in the end (delta: -74.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-03-12 02:11:54,646 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 92.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 02:11:54,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.78 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 02:11:54,647 INFO L168 Benchmark]: Boogie Preprocessor took 11.15 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 965.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 02:11:54,647 INFO L168 Benchmark]: RCFGBuilder took 211.65 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 239.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. [2021-03-12 02:11:54,648 INFO L168 Benchmark]: TraceAbstraction took 1099.70 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 238.7 MB in the beginning and 310.6 MB in the end (delta: -71.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.0 GB. [2021-03-12 02:11:54,656 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 0.08 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 92.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.78 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.15 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 965.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 211.65 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 239.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1099.70 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 238.7 MB in the beginning and 310.6 MB in the end (delta: -71.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 208.1ms, 29 PlacesBefore, 21 PlacesAfterwards, 21 TransitionsBefore, 13 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 147 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 130, positive: 125, positive conditional: 0, positive unconditional: 125, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 102, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 102, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 130, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 102, unknown conditional: 0, unknown unconditional: 102] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - PositiveResult [Line: 52]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 990.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 180.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 281.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 13 SDslu, 3 SDs, 0 SdLazy, 66 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=1, InterpolantAutomatonStates: 12, 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: 9.5ms SsaConstructionTime, 44.1ms SatisfiabilityAnalysisTime, 159.6ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...