/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 04:46:13,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 04:46:13,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 04:46:13,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 04:46:13,478 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-NoLbe.epf [2021-03-11 04:46:13,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 04:46:13,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 04:46:13,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 04:46:13,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 04:46:13,507 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 04:46:13,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 04:46:13,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 04:46:13,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 04:46:13,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 04:46:13,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 04:46:13,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 04:46:13,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 04:46:13,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 04:46:13,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 04:46:13,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 04:46:13,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 04:46:13,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 04:46:13,512 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 04:46:13,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 04:46:13,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 04:46:13,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 04:46:13,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 04:46:13,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 04:46:13,749 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 04:46:13,749 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 04:46:13,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_2.bpl [2021-03-11 04:46:13,750 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_2.bpl' [2021-03-11 04:46:13,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 04:46:13,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 04:46:13,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 04:46:13,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 04:46:13,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 04:46:13,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 04:46:13,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 04:46:13,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 04:46:13,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 04:46:13,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/1) ... [2021-03-11 04:46:13,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 04:46:13,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 04:46:13,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 04:46:13,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 04:46:13,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (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 [2021-03-11 04:46:13,839 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 04:46:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 04:46:13,839 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 04:46:13,839 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 04:46:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 04:46:13,839 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 04:46:13,839 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 04:46:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 04:46:13,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 04:46:13,840 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 04:46:13,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 04:46:13,913 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 04:46:13,914 INFO L202 PluginConnector]: Adding new model example_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:46:13 BoogieIcfgContainer [2021-03-11 04:46:13,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 04:46:13,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 04:46:13,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 04:46:13,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 04:46:13,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 04:46:13" (1/2) ... [2021-03-11 04:46:13,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1d5ac9 and model type example_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 04:46:13, skipping insertion in model container [2021-03-11 04:46:13,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 04:46:13" (2/2) ... [2021-03-11 04:46:13,918 INFO L111 eAbstractionObserver]: Analyzing ICFG example_2.bpl [2021-03-11 04:46:13,922 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 04:46:13,924 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 04:46:13,924 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 04:46:13,948 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 04:46:13,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 04:46:13,971 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 04:46:13,971 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 04:46:13,971 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 04:46:13,972 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 04:46:13,972 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 04:46:13,972 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 04:46:13,972 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 04:46:13,972 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 04:46:13,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 52 flow [2021-03-11 04:46:13,988 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-11 04:46:13,988 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 04:46:13,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 13 events. 1/13 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 4. Up to 3 conditions per place. [2021-03-11 04:46:13,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 15 transitions, 52 flow [2021-03-11 04:46:13,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 11 transitions, 40 flow [2021-03-11 04:46:13,995 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-03-11 04:46:13,995 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 04:46:13,995 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:46:13,995 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:46:13,996 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 04:46:13,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:46:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1311334296, now seen corresponding path program 1 times [2021-03-11 04:46:14,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:46:14,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327303606] [2021-03-11 04:46:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:46:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:46:14,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:46:14,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:46:14,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:46:14,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 04:46:14,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:46:14,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:46:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:46:14,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327303606] [2021-03-11 04:46:14,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:46:14,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:46:14,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801232991] [2021-03-11 04:46:14,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 04:46:14,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:46:14,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 04:46:14,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 04:46:14,117 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 15 [2021-03-11 04:46:14,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-03-11 04:46:14,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:46:14,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 15 [2021-03-11 04:46:14,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:46:14,126 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-11 04:46:14,127 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-11 04:46:14,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 9 events. 0/9 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 04:46:14,127 INFO L132 encePairwiseOnDemand]: 13/15 looper letters, 1 selfloop transitions, 1 changer transitions 0/9 dead transitions. [2021-03-11 04:46:14,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 9 transitions, 34 flow [2021-03-11 04:46:14,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 04:46:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 04:46:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2021-03-11 04:46:14,134 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-03-11 04:46:14,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 39 transitions. [2021-03-11 04:46:14,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 39 transitions. [2021-03-11 04:46:14,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:46:14,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 39 transitions. [2021-03-11 04:46:14,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-03-11 04:46:14,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-03-11 04:46:14,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-03-11 04:46:14,140 INFO L185 Difference]: Start difference. First operand has 16 places, 11 transitions, 40 flow. Second operand 3 states and 39 transitions. [2021-03-11 04:46:14,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 9 transitions, 34 flow [2021-03-11 04:46:14,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 9 transitions, 26 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 04:46:14,143 INFO L241 Difference]: Finished difference. Result has 14 places, 9 transitions, 24 flow [2021-03-11 04:46:14,144 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2021-03-11 04:46:14,144 INFO L335 CegarLoopForPetriNet]: 16 programPoint places, -2 predicate places. [2021-03-11 04:46:14,144 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 24 flow [2021-03-11 04:46:14,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-03-11 04:46:14,145 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:46:14,145 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:46:14,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 04:46:14,145 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 04:46:14,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:46:14,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2113080518, now seen corresponding path program 1 times [2021-03-11 04:46:14,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:46:14,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432718871] [2021-03-11 04:46:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:46:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:46:14,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:46:14,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:46:14,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:46:14,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:46:14,175 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-11 04:46:14,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 04:46:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:46:14,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432718871] [2021-03-11 04:46:14,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:46:14,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:46:14,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231709859] [2021-03-11 04:46:14,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 04:46:14,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:46:14,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 04:46:14,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 04:46:14,186 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 15 [2021-03-11 04:46:14,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 24 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-03-11 04:46:14,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:46:14,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 15 [2021-03-11 04:46:14,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:46:14,204 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-11 04:46:14,204 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 04:46:14,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 15 events. 0/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 04:46:14,205 INFO L132 encePairwiseOnDemand]: 12/15 looper letters, 2 selfloop transitions, 1 changer transitions 1/10 dead transitions. [2021-03-11 04:46:14,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 10 transitions, 34 flow [2021-03-11 04:46:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 04:46:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 04:46:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2021-03-11 04:46:14,206 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-03-11 04:46:14,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 49 transitions. [2021-03-11 04:46:14,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 49 transitions. [2021-03-11 04:46:14,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:46:14,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 49 transitions. [2021-03-11 04:46:14,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-03-11 04:46:14,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-11 04:46:14,207 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-11 04:46:14,207 INFO L185 Difference]: Start difference. First operand has 14 places, 9 transitions, 24 flow. Second operand 4 states and 49 transitions. [2021-03-11 04:46:14,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 10 transitions, 34 flow [2021-03-11 04:46:14,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 10 transitions, 33 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:46:14,208 INFO L241 Difference]: Finished difference. Result has 18 places, 9 transitions, 30 flow [2021-03-11 04:46:14,208 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=30, PETRI_PLACES=18, PETRI_TRANSITIONS=9} [2021-03-11 04:46:14,209 INFO L335 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2021-03-11 04:46:14,209 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 9 transitions, 30 flow [2021-03-11 04:46:14,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-03-11 04:46:14,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 04:46:14,209 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 04:46:14,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 04:46:14,209 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 04:46:14,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 04:46:14,210 INFO L82 PathProgramCache]: Analyzing trace with hash 303075458, now seen corresponding path program 2 times [2021-03-11 04:46:14,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 04:46:14,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274359075] [2021-03-11 04:46:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 04:46:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 04:46:14,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:46:14,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 04:46:14,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 04:46:14,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 04:46:14,235 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-11 04:46:14,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 04:46:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 04:46:14,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274359075] [2021-03-11 04:46:14,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 04:46:14,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 04:46:14,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529902629] [2021-03-11 04:46:14,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 04:46:14,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 04:46:14,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 04:46:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 04:46:14,245 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 15 [2021-03-11 04:46:14,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 9 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-03-11 04:46:14,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 04:46:14,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 15 [2021-03-11 04:46:14,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 04:46:14,267 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-11 04:46:14,267 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2021-03-11 04:46:14,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 11 events. 0/11 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 04:46:14,267 INFO L132 encePairwiseOnDemand]: 12/15 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-11 04:46:14,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 9 transitions, 37 flow [2021-03-11 04:46:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 04:46:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 04:46:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2021-03-11 04:46:14,268 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-03-11 04:46:14,268 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 48 transitions. [2021-03-11 04:46:14,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 48 transitions. [2021-03-11 04:46:14,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 04:46:14,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 48 transitions. [2021-03-11 04:46:14,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-03-11 04:46:14,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-11 04:46:14,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-11 04:46:14,270 INFO L185 Difference]: Start difference. First operand has 18 places, 9 transitions, 30 flow. Second operand 4 states and 48 transitions. [2021-03-11 04:46:14,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 9 transitions, 37 flow [2021-03-11 04:46:14,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 9 transitions, 35 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 04:46:14,271 INFO L241 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2021-03-11 04:46:14,271 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2021-03-11 04:46:14,271 INFO L335 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2021-03-11 04:46:14,271 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2021-03-11 04:46:14,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-03-11 04:46:14,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 04:46:14,274 INFO L202 PluginConnector]: Adding new model example_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 04:46:14 BasicIcfg [2021-03-11 04:46:14,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 04:46:14,275 INFO L168 Benchmark]: Toolchain (without parser) took 511.49 ms. Allocated memory is still 325.1 MB. Free memory was 305.3 MB in the beginning and 281.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.0 GB. [2021-03-11 04:46:14,276 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 325.1 MB. Free memory is still 306.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 04:46:14,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.17 ms. Allocated memory is still 325.1 MB. Free memory was 304.7 MB in the beginning and 303.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 04:46:14,277 INFO L168 Benchmark]: Boogie Preprocessor took 7.66 ms. Allocated memory is still 325.1 MB. Free memory was 303.2 MB in the beginning and 302.4 MB in the end (delta: 792.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 04:46:14,277 INFO L168 Benchmark]: RCFGBuilder took 122.65 ms. Allocated memory is still 325.1 MB. Free memory was 302.4 MB in the beginning and 294.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 04:46:14,277 INFO L168 Benchmark]: TraceAbstraction took 359.41 ms. Allocated memory is still 325.1 MB. Free memory was 293.8 MB in the beginning and 281.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.0 GB. [2021-03-11 04:46:14,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 325.1 MB. Free memory is still 306.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.17 ms. Allocated memory is still 325.1 MB. Free memory was 304.7 MB in the beginning and 303.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 7.66 ms. Allocated memory is still 325.1 MB. Free memory was 303.2 MB in the beginning and 302.4 MB in the end (delta: 792.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 122.65 ms. Allocated memory is still 325.1 MB. Free memory was 302.4 MB in the beginning and 294.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 359.41 ms. Allocated memory is still 325.1 MB. Free memory was 293.8 MB in the beginning and 281.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 302.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 81.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 4 SDslu, 2 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, 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: 3.1ms SsaConstructionTime, 12.0ms SatisfiabilityAnalysisTime, 108.6ms InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...