/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:36:18,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:36:18,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:36:18,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:36:19,007 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-FA-NoLbe.epf [2021-04-15 01:36:19,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:36:19,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:36:19,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:36:19,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:36:19,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:36:19,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:36:19,042 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:36:19,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:36:19,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:36:19,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:36:19,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:36:19,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:36:19,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:36:19,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:36:19,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:36:19,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:36:19,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:36:19,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:36:19,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:36:19,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:36:19,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:36:19,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:36:19,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:36:19,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:36:19,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:36:19,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:36:19,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:36:19,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:36:19,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:36:19,045 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:36:19,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:36:19,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:36:19,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:36:19,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:36:19,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:36:19,349 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-15 01:36:19,349 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-15 01:36:19,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl [2021-04-15 01:36:19,350 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl' [2021-04-15 01:36:19,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:36:19,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-15 01:36:19,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:36:19,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:36:19,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:36:19,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:36:19,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:36:19,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:36:19,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:36:19,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/1) ... [2021-04-15 01:36:19,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:36:19,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:36:19,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:36:19,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:36:19,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (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 [2021-04-15 01:36:19,469 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_y given in one single declaration [2021-04-15 01:36:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure set_y [2021-04-15 01:36:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure set_y [2021-04-15 01:36:19,470 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x_1 given in one single declaration [2021-04-15 01:36:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure set_x_1 [2021-04-15 01:36:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x_1 [2021-04-15 01:36:19,470 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x_0 given in one single declaration [2021-04-15 01:36:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure set_x_0 [2021-04-15 01:36:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x_0 [2021-04-15 01:36:19,470 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-15 01:36:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:36:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:36:19,471 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:36:19,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:36:19,568 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-15 01:36:19,570 INFO L202 PluginConnector]: Adding new model example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:36:19 BoogieIcfgContainer [2021-04-15 01:36:19,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:36:19,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:36:19,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:36:19,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:36:19,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:19" (1/2) ... [2021-04-15 01:36:19,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c0e29e and model type example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:36:19, skipping insertion in model container [2021-04-15 01:36:19,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:36:19" (2/2) ... [2021-04-15 01:36:19,574 INFO L111 eAbstractionObserver]: Analyzing ICFG example_multiple_interleavings.bpl [2021-04-15 01:36:19,578 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:36:19,578 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:36:19,580 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:36:19,581 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:36:19,640 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-04-15 01:36:19,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-15 01:36:19,679 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:36:19,679 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:36:19,679 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:36:19,679 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:36:19,679 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:36:19,680 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:36:19,680 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:36:19,680 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:36:19,688 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 90 flow [2021-04-15 01:36:19,704 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 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) [2021-04-15 01:36:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 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) [2021-04-15 01:36:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-15 01:36:19,713 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:36:19,713 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:36:19,713 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:36:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:36:19,718 INFO L82 PathProgramCache]: Analyzing trace with hash -922453780, now seen corresponding path program 1 times [2021-04-15 01:36:19,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:36:19,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775370785] [2021-04-15 01:36:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:36:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:36:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:36:19,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775370785] [2021-04-15 01:36:19,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:36:19,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:36:19,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561380109] [2021-04-15 01:36:19,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 01:36:19,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:36:19,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 01:36:19,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:36:19,886 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 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) Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-04-15 01:36:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:36:19,936 INFO L93 Difference]: Finished difference Result 118 states and 251 transitions. [2021-04-15 01:36:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 01:36:19,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2021-04-15 01:36:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:36:19,943 INFO L225 Difference]: With dead ends: 118 [2021-04-15 01:36:19,943 INFO L226 Difference]: Without dead ends: 78 [2021-04-15 01:36:19,944 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:36:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-04-15 01:36:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2021-04-15 01:36:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.1323529411764706) internal successors, (145), 68 states have internal predecessors, (145), 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) [2021-04-15 01:36:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 145 transitions. [2021-04-15 01:36:19,982 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 145 transitions. Word has length 13 [2021-04-15 01:36:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:36:19,982 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 145 transitions. [2021-04-15 01:36:19,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-04-15 01:36:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 145 transitions. [2021-04-15 01:36:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-15 01:36:19,983 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:36:19,984 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:36:19,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:36:19,984 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:36:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:36:19,987 INFO L82 PathProgramCache]: Analyzing trace with hash 674715692, now seen corresponding path program 2 times [2021-04-15 01:36:19,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:36:19,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996636489] [2021-04-15 01:36:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:36:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:36:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:36:20,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996636489] [2021-04-15 01:36:20,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:36:20,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:36:20,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622462164] [2021-04-15 01:36:20,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 01:36:20,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:36:20,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 01:36:20,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:36:20,039 INFO L87 Difference]: Start difference. First operand 69 states and 145 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-04-15 01:36:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:36:20,055 INFO L93 Difference]: Finished difference Result 118 states and 249 transitions. [2021-04-15 01:36:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 01:36:20,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2021-04-15 01:36:20,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:36:20,059 INFO L225 Difference]: With dead ends: 118 [2021-04-15 01:36:20,059 INFO L226 Difference]: Without dead ends: 71 [2021-04-15 01:36:20,060 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:36:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-04-15 01:36:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2021-04-15 01:36:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 61 states have internal predecessors, (129), 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) [2021-04-15 01:36:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 129 transitions. [2021-04-15 01:36:20,067 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 129 transitions. Word has length 13 [2021-04-15 01:36:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:36:20,067 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 129 transitions. [2021-04-15 01:36:20,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-04-15 01:36:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 129 transitions. [2021-04-15 01:36:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-15 01:36:20,068 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:36:20,068 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:36:20,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:36:20,068 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:36:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:36:20,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1328845422, now seen corresponding path program 1 times [2021-04-15 01:36:20,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:36:20,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230022495] [2021-04-15 01:36:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:36:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:36:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:36:20,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230022495] [2021-04-15 01:36:20,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:36:20,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:36:20,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374173088] [2021-04-15 01:36:20,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 01:36:20,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:36:20,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 01:36:20,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:36:20,089 INFO L87 Difference]: Start difference. First operand 62 states and 129 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-04-15 01:36:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:36:20,092 INFO L93 Difference]: Finished difference Result 50 states and 99 transitions. [2021-04-15 01:36:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 01:36:20,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) Word has length 13 [2021-04-15 01:36:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:36:20,093 INFO L225 Difference]: With dead ends: 50 [2021-04-15 01:36:20,093 INFO L226 Difference]: Without dead ends: 50 [2021-04-15 01:36:20,093 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:36:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-04-15 01:36:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-04-15 01:36:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 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) [2021-04-15 01:36:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 99 transitions. [2021-04-15 01:36:20,096 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 99 transitions. Word has length 13 [2021-04-15 01:36:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:36:20,096 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 99 transitions. [2021-04-15 01:36:20,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-04-15 01:36:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 99 transitions. [2021-04-15 01:36:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-15 01:36:20,097 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:36:20,097 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:36:20,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 01:36:20,097 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:36:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:36:20,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1989043106, now seen corresponding path program 3 times [2021-04-15 01:36:20,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:36:20,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201841510] [2021-04-15 01:36:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:36:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:36:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:36:20,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201841510] [2021-04-15 01:36:20,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:36:20,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:36:20,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851824161] [2021-04-15 01:36:20,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 01:36:20,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:36:20,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 01:36:20,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:36:20,118 INFO L87 Difference]: Start difference. First operand 50 states and 99 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-04-15 01:36:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:36:20,124 INFO L93 Difference]: Finished difference Result 69 states and 133 transitions. [2021-04-15 01:36:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 01:36:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2021-04-15 01:36:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:36:20,124 INFO L225 Difference]: With dead ends: 69 [2021-04-15 01:36:20,124 INFO L226 Difference]: Without dead ends: 42 [2021-04-15 01:36:20,125 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:36:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-04-15 01:36:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-04-15 01:36:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 41 states have internal predecessors, (79), 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) [2021-04-15 01:36:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 79 transitions. [2021-04-15 01:36:20,127 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 79 transitions. Word has length 13 [2021-04-15 01:36:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:36:20,127 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 79 transitions. [2021-04-15 01:36:20,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-04-15 01:36:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 79 transitions. [2021-04-15 01:36:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-15 01:36:20,128 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:36:20,128 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:36:20,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 01:36:20,128 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:36:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:36:20,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1122234654, now seen corresponding path program 4 times [2021-04-15 01:36:20,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:36:20,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975460246] [2021-04-15 01:36:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:36:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:36:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:36:20,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975460246] [2021-04-15 01:36:20,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:36:20,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:36:20,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873907562] [2021-04-15 01:36:20,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 01:36:20,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:36:20,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 01:36:20,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:36:20,159 INFO L87 Difference]: Start difference. First operand 42 states and 79 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-04-15 01:36:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:36:20,162 INFO L93 Difference]: Finished difference Result 41 states and 78 transitions. [2021-04-15 01:36:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 01:36:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2021-04-15 01:36:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:36:20,163 INFO L225 Difference]: With dead ends: 41 [2021-04-15 01:36:20,163 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:36:20,163 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:36:20,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:36:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:36:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-04-15 01:36:20,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:36:20,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-04-15 01:36:20,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:36:20,164 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:36:20,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-04-15 01:36:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:36:20,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:36:20,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 01:36:20,167 INFO L202 PluginConnector]: Adding new model example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:36:20 BasicIcfg [2021-04-15 01:36:20,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:36:20,168 INFO L168 Benchmark]: Toolchain (without parser) took 788.53 ms. Allocated memory is still 346.0 MB. Free memory was 326.5 MB in the beginning and 294.6 MB in the end (delta: 31.9 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.0 GB. [2021-04-15 01:36:20,168 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 327.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:36:20,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.58 ms. Allocated memory is still 346.0 MB. Free memory was 326.4 MB in the beginning and 324.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:36:20,169 INFO L168 Benchmark]: Boogie Preprocessor took 10.59 ms. Allocated memory is still 346.0 MB. Free memory was 324.9 MB in the beginning and 324.1 MB in the end (delta: 866.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:36:20,169 INFO L168 Benchmark]: RCFGBuilder took 158.47 ms. Allocated memory is still 346.0 MB. Free memory was 324.1 MB in the beginning and 315.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:36:20,170 INFO L168 Benchmark]: TraceAbstraction took 596.61 ms. Allocated memory is still 346.0 MB. Free memory was 315.0 MB in the beginning and 294.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.0 GB. [2021-04-15 01:36:20,171 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 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 327.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.58 ms. Allocated memory is still 346.0 MB. Free memory was 326.4 MB in the beginning and 324.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.59 ms. Allocated memory is still 346.0 MB. Free memory was 324.9 MB in the beginning and 324.1 MB in the end (delta: 866.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 158.47 ms. Allocated memory is still 346.0 MB. Free memory was 324.1 MB in the beginning and 315.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 596.61 ms. Allocated memory is still 346.0 MB. Free memory was 315.0 MB in the beginning and 294.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 487.4ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 104.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 135 SDtfs, 95 SDslu, 87 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.5ms SsaConstructionTime, 26.1ms SatisfiabilityAnalysisTime, 164.0ms InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...