/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/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 15:11:01,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 15:11:01,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 15:11:01,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 15:11:01,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 15:11:01,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 15:11:01,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 15:11:01,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 15:11:01,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 15:11:01,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 15:11:01,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 15:11:01,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 15:11:01,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 15:11:01,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 15:11:01,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 15:11:01,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 15:11:01,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 15:11:01,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 15:11:01,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 15:11:01,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 15:11:01,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 15:11:01,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 15:11:01,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 15:11:01,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 15:11:01,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 15:11:01,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 15:11:01,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 15:11:01,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 15:11:01,674 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 15:11:01,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 15:11:01,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 15:11:01,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 15:11:01,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 15:11:01,713 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 15:11:01,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 15:11:01,714 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 15:11:01,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 15:11:01,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 15:11:01,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 15:11:01,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 15:11:01,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 15:11:01,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 15:11:01,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 15:11:01,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 15:11:01,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 15:11:01,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 15:11:01,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 15:11:01,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 15:11:01,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 15:11:01,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 15:11:01,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 15:11:01,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 15:11:01,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 15:11:01,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 15:11:01,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 15:11:01,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 15:11:01,717 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 15:11:01,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 15:11:01,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 15:11:02,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 15:11:02,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 15:11:02,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 15:11:02,045 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 15:11:02,045 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 15:11:02,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl [2021-03-24 15:11:02,046 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl' [2021-03-24 15:11:02,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 15:11:02,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 15:11:02,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 15:11:02,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 15:11:02,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 15:11:02,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 15:11:02,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 15:11:02,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 15:11:02,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 15:11:02,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/1) ... [2021-03-24 15:11:02,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 15:11:02,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 15:11:02,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 15:11:02,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 15:11:02,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (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 15:11:02,202 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-24 15:11:02,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 15:11:02,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 15:11:02,203 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-24 15:11:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 15:11:02,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 15:11:02,204 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 15:11:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 15:11:02,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 15:11:02,205 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 15:11:02,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 15:11:02,389 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 15:11:02,390 INFO L202 PluginConnector]: Adding new model bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:11:02 BoogieIcfgContainer [2021-03-24 15:11:02,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 15:11:02,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 15:11:02,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 15:11:02,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 15:11:02,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:11:02" (1/2) ... [2021-03-24 15:11:02,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ce492d and model type bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 03:11:02, skipping insertion in model container [2021-03-24 15:11:02,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:11:02" (2/2) ... [2021-03-24 15:11:02,396 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth.wvr.bpl [2021-03-24 15:11:02,401 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 15:11:02,404 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 15:11:02,405 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 15:11:02,452 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-24 15:11:02,467 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 15:11:02,491 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 15:11:02,492 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 15:11:02,492 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 15:11:02,492 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 15:11:02,492 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 15:11:02,492 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 15:11:02,492 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 15:11:02,492 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 15:11:02,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 76 flow [2021-03-24 15:11:02,545 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-24 15:11:02,545 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 15:11:02,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 2/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-03-24 15:11:02,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 30 transitions, 76 flow [2021-03-24 15:11:02,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 26 transitions, 64 flow [2021-03-24 15:11:02,559 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 15:11:02,568 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 64 flow [2021-03-24 15:11:02,570 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 64 flow [2021-03-24 15:11:02,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 64 flow [2021-03-24 15:11:02,579 INFO L129 PetriNetUnfolder]: 2/26 cut-off events. [2021-03-24 15:11:02,580 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 15:11:02,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 2/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-03-24 15:11:02,582 INFO L142 LiptonReduction]: Number of co-enabled transitions 124 [2021-03-24 15:11:02,763 INFO L154 LiptonReduction]: Checked pairs total: 530 [2021-03-24 15:11:02,764 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-24 15:11:02,765 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 207 [2021-03-24 15:11:02,774 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-24 15:11:02,774 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 15:11:02,775 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:02,775 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:02,775 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash 688997093, now seen corresponding path program 1 times [2021-03-24 15:11:02,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:02,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563316121] [2021-03-24 15:11:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:02,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:02,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:11:02,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:02,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:02,912 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 15:11:02,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563316121] [2021-03-24 15:11:02,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:02,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 15:11:02,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390100956] [2021-03-24 15:11:02,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:11:02,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:02,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:11:02,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:11:02,946 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 39 [2021-03-24 15:11:02,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 15:11:02,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:02,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 39 [2021-03-24 15:11:02,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:02,970 INFO L129 PetriNetUnfolder]: 4/26 cut-off events. [2021-03-24 15:11:02,970 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 15:11:02,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 26 events. 4/26 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 30. Up to 9 conditions per place. [2021-03-24 15:11:02,975 INFO L132 encePairwiseOnDemand]: 35/39 looper letters, 3 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-03-24 15:11:02,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 64 flow [2021-03-24 15:11:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:11:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:11:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2021-03-24 15:11:02,991 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2021-03-24 15:11:02,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2021-03-24 15:11:02,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2021-03-24 15:11:02,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:02,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2021-03-24 15:11:02,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 15:11:03,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 15:11:03,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 15:11:03,004 INFO L185 Difference]: Start difference. First operand has 23 places, 18 transitions, 48 flow. Second operand 3 states and 97 transitions. [2021-03-24 15:11:03,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 64 flow [2021-03-24 15:11:03,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 56 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 15:11:03,008 INFO L241 Difference]: Finished difference. Result has 22 places, 20 transitions, 59 flow [2021-03-24 15:11:03,009 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2021-03-24 15:11:03,010 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2021-03-24 15:11:03,010 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 59 flow [2021-03-24 15:11:03,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 15:11:03,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:03,010 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:03,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 15:11:03,011 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:03,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:03,011 INFO L82 PathProgramCache]: Analyzing trace with hash -145890702, now seen corresponding path program 1 times [2021-03-24 15:11:03,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:03,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76569074] [2021-03-24 15:11:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:03,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:03,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 15:11:03,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:03,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:03,054 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 15:11:03,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76569074] [2021-03-24 15:11:03,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:03,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 15:11:03,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545363565] [2021-03-24 15:11:03,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 15:11:03,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:03,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 15:11:03,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 15:11:03,057 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-24 15:11:03,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 59 flow. Second operand 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 15:11:03,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:03,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-24 15:11:03,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:03,080 INFO L129 PetriNetUnfolder]: 5/34 cut-off events. [2021-03-24 15:11:03,080 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 15:11:03,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 34 events. 5/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2021-03-24 15:11:03,081 INFO L132 encePairwiseOnDemand]: 35/39 looper letters, 1 selfloop transitions, 3 changer transitions 4/21 dead transitions. [2021-03-24 15:11:03,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 71 flow [2021-03-24 15:11:03,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 15:11:03,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 15:11:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2021-03-24 15:11:03,083 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2021-03-24 15:11:03,083 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 122 transitions. [2021-03-24 15:11:03,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 122 transitions. [2021-03-24 15:11:03,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:03,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 122 transitions. [2021-03-24 15:11:03,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 15:11:03,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 15:11:03,086 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 15:11:03,086 INFO L185 Difference]: Start difference. First operand has 22 places, 20 transitions, 59 flow. Second operand 4 states and 122 transitions. [2021-03-24 15:11:03,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 71 flow [2021-03-24 15:11:03,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 15:11:03,088 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 56 flow [2021-03-24 15:11:03,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-03-24 15:11:03,088 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-03-24 15:11:03,089 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 56 flow [2021-03-24 15:11:03,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 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 15:11:03,089 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:11:03,089 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:11:03,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 15:11:03,089 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:11:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:11:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1838131762, now seen corresponding path program 2 times [2021-03-24 15:11:03,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:11:03,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360762619] [2021-03-24 15:11:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:11:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:11:03,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:03,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:03,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:03,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:03,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:11:03,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:11:03,114 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 15:11:03,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360762619] [2021-03-24 15:11:03,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:11:03,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:11:03,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948075042] [2021-03-24 15:11:03,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 15:11:03,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:11:03,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 15:11:03,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 15:11:03,117 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 39 [2021-03-24 15:11:03,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 15:11:03,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:11:03,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 39 [2021-03-24 15:11:03,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:11:03,128 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-24 15:11:03,128 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-24 15:11:03,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 16 events. 1/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 19. Up to 4 conditions per place. [2021-03-24 15:11:03,129 INFO L132 encePairwiseOnDemand]: 36/39 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2021-03-24 15:11:03,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 58 flow [2021-03-24 15:11:03,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 15:11:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 15:11:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2021-03-24 15:11:03,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2021-03-24 15:11:03,131 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2021-03-24 15:11:03,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2021-03-24 15:11:03,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:11:03,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2021-03-24 15:11:03,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 15:11:03,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 15:11:03,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 15:11:03,134 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 56 flow. Second operand 4 states and 116 transitions. [2021-03-24 15:11:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 58 flow [2021-03-24 15:11:03,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 38 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-03-24 15:11:03,135 INFO L241 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2021-03-24 15:11:03,135 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2021-03-24 15:11:03,135 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, -4 predicate places. [2021-03-24 15:11:03,135 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2021-03-24 15:11:03,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 15:11:03,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 15:11:03,139 INFO L202 PluginConnector]: Adding new model bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 03:11:03 BasicIcfg [2021-03-24 15:11:03,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 15:11:03,141 INFO L168 Benchmark]: Toolchain (without parser) took 1045.33 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 236.2 MB in the beginning and 319.1 MB in the end (delta: -83.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.0 GB. [2021-03-24 15:11:03,141 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:11:03,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.74 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 15:11:03,142 INFO L168 Benchmark]: Boogie Preprocessor took 14.50 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.8 MB in the end (delta: 773.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:11:03,143 INFO L168 Benchmark]: RCFGBuilder took 254.50 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 239.5 MB in the end (delta: -5.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.0 GB. [2021-03-24 15:11:03,143 INFO L168 Benchmark]: TraceAbstraction took 747.81 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 238.8 MB in the beginning and 319.1 MB in the end (delta: -80.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.0 GB. [2021-03-24 15:11:03,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.74 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.50 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.8 MB in the end (delta: 773.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 254.50 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 239.5 MB in the end (delta: -5.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 747.81 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 238.8 MB in the beginning and 319.1 MB in the end (delta: -80.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 193.3ms, 31 PlacesBefore, 23 PlacesAfterwards, 26 TransitionsBefore, 18 TransitionsAfterwards, 124 CoEnabledTransitionPairs, 4 FixpointIterations, 6 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 530 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 291, positive: 218, positive conditional: 0, positive unconditional: 218, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 65, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 65, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 291, positive: 167, positive conditional: 0, positive unconditional: 167, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 65, unknown conditional: 0, unknown unconditional: 65] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 57]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 648.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 128.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 265.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 1 SDslu, 1 SDs, 0 SdLazy, 11 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=1, InterpolantAutomatonStates: 11, 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: 8.1ms SsaConstructionTime, 30.4ms SatisfiabilityAnalysisTime, 93.3ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...