/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:03:51,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:03:51,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:03:51,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 00:03:51,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-25 00:03:51,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:03:51,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:03:51,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:03:51,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:03:51,382 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:03:51,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:03:51,383 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:03:51,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:03:51,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:03:51,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:03:51,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:03:51,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:03:51,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:03:51,385 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:03:51,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:03:51,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:03:51,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:03:51,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:03:51,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:03:51,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:03:51,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:03:51,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:03:51,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:03:51,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:03:51,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:03:51,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:03:51,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:03:51,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:03:51,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:03:51,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:03:51,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:03:51,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:03:51,763 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:03:51,765 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:03:51,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl [2021-03-25 00:03:51,766 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl' [2021-03-25 00:03:51,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:03:51,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:03:51,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:03:51,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:03:51,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:03:51,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:03:51,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:03:51,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:03:51,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:03:51,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... [2021-03-25 00:03:51,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:03:51,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:03:51,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:03:51,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:03:51,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:03:51,899 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:03:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:03:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:03:51,901 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:03:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:03:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:03:51,902 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:03:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:03:51,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:03:51,903 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 00:03:52,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:03:52,151 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:03:52,153 INFO L202 PluginConnector]: Adding new model bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:03:52 BoogieIcfgContainer [2021-03-25 00:03:52,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:03:52,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:03:52,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:03:52,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:03:52,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:03:51" (1/2) ... [2021-03-25 00:03:52,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694d847e and model type bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:03:52, skipping insertion in model container [2021-03-25 00:03:52,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:03:52" (2/2) ... [2021-03-25 00:03:52,160 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth.wvr.bpl [2021-03-25 00:03:52,165 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:03:52,169 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:03:52,170 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:03:52,202 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 00:03:52,223 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 00:03:52,246 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:03:52,246 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:03:52,246 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:03:52,246 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:03:52,246 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:03:52,246 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:03:52,246 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:03:52,247 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:03:52,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 76 flow [2021-03-25 00:03:52,274 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-25 00:03:52,274 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:03:52,277 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. [2021-03-25 00:03:52,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 30 transitions, 76 flow [2021-03-25 00:03:52,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 26 transitions, 64 flow [2021-03-25 00:03:52,283 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:03:52,297 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 64 flow [2021-03-25 00:03:52,300 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 64 flow [2021-03-25 00:03:52,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 64 flow [2021-03-25 00:03:52,310 INFO L129 PetriNetUnfolder]: 2/26 cut-off events. [2021-03-25 00:03:52,311 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:03:52,311 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. [2021-03-25 00:03:52,314 INFO L142 LiptonReduction]: Number of co-enabled transitions 124 [2021-03-25 00:03:52,696 INFO L154 LiptonReduction]: Checked pairs total: 307 [2021-03-25 00:03:52,696 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-25 00:03:52,698 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 416 [2021-03-25 00:03:52,716 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-25 00:03:52,716 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:03:52,716 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:52,717 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:52,717 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:52,732 INFO L82 PathProgramCache]: Analyzing trace with hash 998251156, now seen corresponding path program 1 times [2021-03-25 00:03:52,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:52,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478457407] [2021-03-25 00:03:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:52,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:52,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:03:52,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:52,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:52,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478457407] [2021-03-25 00:03:52,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:52,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 00:03:52,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766021265] [2021-03-25 00:03:52,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 00:03:52,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:52,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 00:03:52,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 00:03:52,918 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 44 [2021-03-25 00:03:52,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:52,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:52,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 44 [2021-03-25 00:03:52,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:52,952 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-03-25 00:03:52,952 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 00:03:52,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 22 events. 2/22 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 24. Up to 4 conditions per place. [2021-03-25 00:03:52,954 INFO L132 encePairwiseOnDemand]: 39/44 looper letters, 1 selfloop transitions, 4 changer transitions 1/16 dead transitions. [2021-03-25 00:03:52,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 56 flow [2021-03-25 00:03:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 00:03:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 00:03:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2021-03-25 00:03:52,966 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-03-25 00:03:52,967 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2021-03-25 00:03:52,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2021-03-25 00:03:52,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:52,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2021-03-25 00:03:52,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:52,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:52,978 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:52,980 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 42 flow. Second operand 4 states and 135 transitions. [2021-03-25 00:03:52,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 56 flow [2021-03-25 00:03:52,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 48 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:03:52,986 INFO L241 Difference]: Finished difference. Result has 21 places, 15 transitions, 47 flow [2021-03-25 00:03:52,987 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=47, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2021-03-25 00:03:52,988 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2021-03-25 00:03:52,989 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 47 flow [2021-03-25 00:03:52,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:52,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:52,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:52,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:03:52,990 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:52,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1425408436, now seen corresponding path program 1 times [2021-03-25 00:03:52,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:52,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296794986] [2021-03-25 00:03:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:53,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:53,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:03:53,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:53,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:53,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296794986] [2021-03-25 00:03:53,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:53,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 00:03:53,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798106759] [2021-03-25 00:03:53,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 00:03:53,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:53,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 00:03:53,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 00:03:53,016 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 44 [2021-03-25 00:03:53,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:53,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 44 [2021-03-25 00:03:53,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:53,024 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 00:03:53,024 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 00:03:53,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 14 events. 0/14 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 00:03:53,024 INFO L132 encePairwiseOnDemand]: 41/44 looper letters, 1 selfloop transitions, 2 changer transitions 1/14 dead transitions. [2021-03-25 00:03:53,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 48 flow [2021-03-25 00:03:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 00:03:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 00:03:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2021-03-25 00:03:53,026 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2021-03-25 00:03:53,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2021-03-25 00:03:53,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2021-03-25 00:03:53,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:53,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2021-03-25 00:03:53,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,029 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 47 flow. Second operand 3 states and 94 transitions. [2021-03-25 00:03:53,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 48 flow [2021-03-25 00:03:53,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 34 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-03-25 00:03:53,030 INFO L241 Difference]: Finished difference. Result has 17 places, 13 transitions, 30 flow [2021-03-25 00:03:53,031 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2021-03-25 00:03:53,031 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, -4 predicate places. [2021-03-25 00:03:53,031 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 30 flow [2021-03-25 00:03:53,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,032 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:03:53,032 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:03:53,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:03:53,032 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:03:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:03:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1204905580, now seen corresponding path program 2 times [2021-03-25 00:03:53,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:03:53,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092706687] [2021-03-25 00:03:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:03:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:03:53,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:53,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:53,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:53,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:53,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:03:53,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:03:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 00:03:53,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092706687] [2021-03-25 00:03:53,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:03:53,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:03:53,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911452294] [2021-03-25 00:03:53,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 00:03:53,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:03:53,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 00:03:53,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 00:03:53,066 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 44 [2021-03-25 00:03:53,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:03:53,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 44 [2021-03-25 00:03:53,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:03:53,083 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 00:03:53,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 00:03:53,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 00:03:53,083 INFO L132 encePairwiseOnDemand]: 41/44 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-03-25 00:03:53,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 34 flow [2021-03-25 00:03:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 00:03:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 00:03:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2021-03-25 00:03:53,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-03-25 00:03:53,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 136 transitions. [2021-03-25 00:03:53,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 136 transitions. [2021-03-25 00:03:53,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:03:53,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 136 transitions. [2021-03-25 00:03:53,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,090 INFO L185 Difference]: Start difference. First operand has 17 places, 13 transitions, 30 flow. Second operand 4 states and 136 transitions. [2021-03-25 00:03:53,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 34 flow [2021-03-25 00:03:53,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 30 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 00:03:53,091 INFO L241 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2021-03-25 00:03:53,091 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2021-03-25 00:03:53,091 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, -5 predicate places. [2021-03-25 00:03:53,091 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2021-03-25 00:03:53,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 00:03:53,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:03:53,095 INFO L202 PluginConnector]: Adding new model bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:03:53 BasicIcfg [2021-03-25 00:03:53,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:03:53,096 INFO L168 Benchmark]: Toolchain (without parser) took 1307.62 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 236.5 MB in the beginning and 336.5 MB in the end (delta: -100.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.0 GB. [2021-03-25 00:03:53,097 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:03:53,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.66 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:03:53,098 INFO L168 Benchmark]: Boogie Preprocessor took 13.98 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.1 MB in the end (delta: 877.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:03:53,099 INFO L168 Benchmark]: RCFGBuilder took 320.60 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 239.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.0 GB. [2021-03-25 00:03:53,099 INFO L168 Benchmark]: TraceAbstraction took 940.90 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 238.7 MB in the beginning and 336.5 MB in the end (delta: -97.8 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.0 GB. [2021-03-25 00:03:53,102 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 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.66 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.98 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.1 MB in the end (delta: 877.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 320.60 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 239.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 940.90 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 238.7 MB in the beginning and 336.5 MB in the end (delta: -97.8 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 396.0ms, 31 PlacesBefore, 21 PlacesAfterwards, 26 TransitionsBefore, 15 TransitionsAfterwards, 124 CoEnabledTransitionPairs, 4 FixpointIterations, 6 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 14 TotalNumberOfCompositions, 307 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 177, positive: 137, positive conditional: 0, positive unconditional: 137, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 97, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 97, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 97, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 119, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 177, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 97, unknown conditional: 0, unknown unconditional: 97] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 4.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 850.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 118.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 464.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 10 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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: 6.4ms SsaConstructionTime, 31.1ms SatisfiabilityAnalysisTime, 79.1ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 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...