/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 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-01 17:09:13,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-01 17:09:13,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-01 17:09:13,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-01 17:09:13,742 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 [2021-06-01 17:09:13,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-01 17:09:13,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-01 17:09:13,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-01 17:09:13,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-01 17:09:13,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-01 17:09:13,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-01 17:09:13,771 INFO L138 SettingsManager]: * Use SBE=true [2021-06-01 17:09:13,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-01 17:09:13,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-01 17:09:13,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-01 17:09:13,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-01 17:09:13,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-01 17:09:13,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-01 17:09:13,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-01 17:09:13,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-01 17:09:13,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-01 17:09:13,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-01 17:09:13,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-01 17:09:13,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-01 17:09:13,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-01 17:09:13,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-01 17:09:13,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-01 17:09:13,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-01 17:09:13,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 17:09:13,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-01 17:09:13,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-01 17:09:13,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-01 17:09:13,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-01 17:09:13,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-01 17:09:13,775 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-01 17:09:13,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-01 17:09:13,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-01 17:09:14,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-01 17:09:14,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-01 17:09:14,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-01 17:09:14,023 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-01 17:09:14,025 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-01 17:09:14,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl [2021-06-01 17:09:14,026 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_multiple_interleavings.bpl' [2021-06-01 17:09:14,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-01 17:09:14,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-01 17:09:14,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-01 17:09:14,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-01 17:09:14,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-01 17:09:14,082 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 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,087 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 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-01 17:09:14,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-01 17:09:14,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-01 17:09:14,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-01 17:09:14,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (1/1) ... [2021-06-01 17:09:14,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-01 17:09:14,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-01 17:09:14,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-01 17:09:14,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-01 17:09:14,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (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 [2021-06-01 17:09:14,162 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_y given in one single declaration [2021-06-01 17:09:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure set_y [2021-06-01 17:09:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure set_y [2021-06-01 17:09:14,163 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x_1 given in one single declaration [2021-06-01 17:09:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure set_x_1 [2021-06-01 17:09:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x_1 [2021-06-01 17:09:14,163 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x_0 given in one single declaration [2021-06-01 17:09:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure set_x_0 [2021-06-01 17:09:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x_0 [2021-06-01 17:09:14,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-01 17:09:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-01 17:09:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-01 17:09:14,164 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-01 17:09:14,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-01 17:09:14,269 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-01 17:09:14,271 INFO L202 PluginConnector]: Adding new model example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 05:09:14 BoogieIcfgContainer [2021-06-01 17:09:14,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-01 17:09:14,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-01 17:09:14,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-01 17:09:14,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-01 17:09:14,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:14" (1/2) ... [2021-06-01 17:09:14,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2f1041 and model type example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 05:09:14, skipping insertion in model container [2021-06-01 17:09:14,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 05:09:14" (2/2) ... [2021-06-01 17:09:14,277 INFO L111 eAbstractionObserver]: Analyzing ICFG example_multiple_interleavings.bpl [2021-06-01 17:09:14,283 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-01 17:09:14,284 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-01 17:09:14,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-01 17:09:14,285 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-01 17:09:14,347 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-06-01 17:09:14,362 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-01 17:09:14,374 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 17:09:14,374 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 17:09:14,374 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 17:09:14,374 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 17:09:14,374 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 17:09:14,374 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 17:09:14,375 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 17:09:14,375 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-01 17:09:14,385 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 90 flow [2021-06-01 17:09:14,401 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) [2021-06-01 17:09:14,403 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) [2021-06-01 17:09:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-01 17:09:14,409 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:14,410 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:14,410 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:14,416 INFO L82 PathProgramCache]: Analyzing trace with hash -922453780, now seen corresponding path program 1 times [2021-06-01 17:09:14,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:14,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734046569] [2021-06-01 17:09:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:14,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:14,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734046569] [2021-06-01 17:09:14,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734046569] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:14,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:14,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:09:14,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270944066] [2021-06-01 17:09:14,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-01 17:09:14,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:14,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-01 17:09:14,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-01 17:09:14,606 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) [2021-06-01 17:09:14,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:14,627 INFO L93 Difference]: Finished difference Result 118 states and 251 transitions. [2021-06-01 17:09:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-01 17:09:14,628 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 [2021-06-01 17:09:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:14,634 INFO L225 Difference]: With dead ends: 118 [2021-06-01 17:09:14,634 INFO L226 Difference]: Without dead ends: 78 [2021-06-01 17:09:14,635 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-01 17:09:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-06-01 17:09:14,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2021-06-01 17:09:14,655 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) [2021-06-01 17:09:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 145 transitions. [2021-06-01 17:09:14,671 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 145 transitions. Word has length 13 [2021-06-01 17:09:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:14,671 INFO L482 AbstractCegarLoop]: Abstraction has 69 states and 145 transitions. [2021-06-01 17:09:14,672 INFO L483 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) [2021-06-01 17:09:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 145 transitions. [2021-06-01 17:09:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-01 17:09:14,672 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:14,672 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:14,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-01 17:09:14,673 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash 674715692, now seen corresponding path program 2 times [2021-06-01 17:09:14,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:14,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723407403] [2021-06-01 17:09:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:14,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:14,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723407403] [2021-06-01 17:09:14,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723407403] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:14,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:14,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:09:14,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976987738] [2021-06-01 17:09:14,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-01 17:09:14,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-01 17:09:14,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-01 17:09:14,711 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) [2021-06-01 17:09:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:14,724 INFO L93 Difference]: Finished difference Result 118 states and 249 transitions. [2021-06-01 17:09:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-01 17:09:14,724 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 [2021-06-01 17:09:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:14,725 INFO L225 Difference]: With dead ends: 118 [2021-06-01 17:09:14,725 INFO L226 Difference]: Without dead ends: 71 [2021-06-01 17:09:14,726 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-01 17:09:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-06-01 17:09:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2021-06-01 17:09:14,731 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) [2021-06-01 17:09:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 129 transitions. [2021-06-01 17:09:14,732 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 129 transitions. Word has length 13 [2021-06-01 17:09:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:14,732 INFO L482 AbstractCegarLoop]: Abstraction has 62 states and 129 transitions. [2021-06-01 17:09:14,732 INFO L483 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) [2021-06-01 17:09:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 129 transitions. [2021-06-01 17:09:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-01 17:09:14,732 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:14,732 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:14,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-01 17:09:14,733 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1328845422, now seen corresponding path program 1 times [2021-06-01 17:09:14,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:14,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852188830] [2021-06-01 17:09:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:14,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:14,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852188830] [2021-06-01 17:09:14,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852188830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:14,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:14,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:09:14,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735271509] [2021-06-01 17:09:14,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-01 17:09:14,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:14,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-01 17:09:14,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:09:14,747 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) [2021-06-01 17:09:14,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:14,757 INFO L93 Difference]: Finished difference Result 50 states and 99 transitions. [2021-06-01 17:09:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-01 17:09:14,757 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 [2021-06-01 17:09:14,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:14,758 INFO L225 Difference]: With dead ends: 50 [2021-06-01 17:09:14,758 INFO L226 Difference]: Without dead ends: 50 [2021-06-01 17:09:14,758 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:09:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-06-01 17:09:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-06-01 17:09:14,761 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) [2021-06-01 17:09:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 99 transitions. [2021-06-01 17:09:14,763 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 99 transitions. Word has length 13 [2021-06-01 17:09:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:14,764 INFO L482 AbstractCegarLoop]: Abstraction has 50 states and 99 transitions. [2021-06-01 17:09:14,764 INFO L483 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) [2021-06-01 17:09:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 99 transitions. [2021-06-01 17:09:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-01 17:09:14,771 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:14,772 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:14,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-01 17:09:14,772 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:14,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:14,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1989043106, now seen corresponding path program 3 times [2021-06-01 17:09:14,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:14,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970504246] [2021-06-01 17:09:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:14,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:14,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970504246] [2021-06-01 17:09:14,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970504246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:14,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:14,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:09:14,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768412958] [2021-06-01 17:09:14,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-01 17:09:14,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:14,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-01 17:09:14,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-01 17:09:14,804 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) [2021-06-01 17:09:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:14,814 INFO L93 Difference]: Finished difference Result 69 states and 133 transitions. [2021-06-01 17:09:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-01 17:09:14,815 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 [2021-06-01 17:09:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:14,815 INFO L225 Difference]: With dead ends: 69 [2021-06-01 17:09:14,815 INFO L226 Difference]: Without dead ends: 42 [2021-06-01 17:09:14,816 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-01 17:09:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-06-01 17:09:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-06-01 17:09:14,818 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) [2021-06-01 17:09:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 79 transitions. [2021-06-01 17:09:14,819 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 79 transitions. Word has length 13 [2021-06-01 17:09:14,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:14,819 INFO L482 AbstractCegarLoop]: Abstraction has 42 states and 79 transitions. [2021-06-01 17:09:14,819 INFO L483 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) [2021-06-01 17:09:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 79 transitions. [2021-06-01 17:09:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-01 17:09:14,819 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:14,819 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:14,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-01 17:09:14,820 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:14,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:14,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1122234654, now seen corresponding path program 4 times [2021-06-01 17:09:14,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:14,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057922991] [2021-06-01 17:09:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:14,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:14,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057922991] [2021-06-01 17:09:14,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057922991] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:14,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:14,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:09:14,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985491691] [2021-06-01 17:09:14,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-01 17:09:14,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:14,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-01 17:09:14,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-01 17:09:14,841 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) [2021-06-01 17:09:14,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:14,844 INFO L93 Difference]: Finished difference Result 41 states and 78 transitions. [2021-06-01 17:09:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-01 17:09:14,845 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 [2021-06-01 17:09:14,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:14,845 INFO L225 Difference]: With dead ends: 41 [2021-06-01 17:09:14,845 INFO L226 Difference]: Without dead ends: 0 [2021-06-01 17:09:14,845 INFO L810 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 [2021-06-01 17:09:14,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-01 17:09:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-01 17:09:14,845 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) [2021-06-01 17:09:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-01 17:09:14,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-06-01 17:09:14,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:14,846 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-01 17:09:14,846 INFO L483 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) [2021-06-01 17:09:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-01 17:09:14,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-01 17:09:14,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-01 17:09:14,848 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-01 17:09:14,849 INFO L202 PluginConnector]: Adding new model example_multiple_interleavings.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 05:09:14 BasicIcfg [2021-06-01 17:09:14,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-01 17:09:14,850 INFO L168 Benchmark]: Toolchain (without parser) took 776.56 ms. Allocated memory is still 346.0 MB. Free memory was 324.9 MB in the beginning and 292.5 MB in the end (delta: 32.4 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.0 GB. [2021-06-01 17:09:14,850 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 346.0 MB. Free memory was 325.9 MB in the beginning and 325.8 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 17:09:14,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.08 ms. Allocated memory is still 346.0 MB. Free memory was 324.8 MB in the beginning and 323.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 17:09:14,851 INFO L168 Benchmark]: Boogie Preprocessor took 9.50 ms. Allocated memory is still 346.0 MB. Free memory was 323.3 MB in the beginning and 322.5 MB in the end (delta: 827.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-01 17:09:14,851 INFO L168 Benchmark]: RCFGBuilder took 168.16 ms. Allocated memory is still 346.0 MB. Free memory was 322.4 MB in the beginning and 313.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-01 17:09:14,852 INFO L168 Benchmark]: TraceAbstraction took 576.94 ms. Allocated memory is still 346.0 MB. Free memory was 313.2 MB in the beginning and 292.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.0 GB. [2021-06-01 17:09:14,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 346.0 MB. Free memory was 325.9 MB in the beginning and 325.8 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.08 ms. Allocated memory is still 346.0 MB. Free memory was 324.8 MB in the beginning and 323.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.50 ms. Allocated memory is still 346.0 MB. Free memory was 323.3 MB in the beginning and 322.5 MB in the end (delta: 827.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 168.16 ms. Allocated memory is still 346.0 MB. Free memory was 322.4 MB in the beginning and 313.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 576.94 ms. Allocated memory is still 346.0 MB. Free memory was 313.2 MB in the beginning and 292.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 23.3 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 474.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 17.4ms, AutomataDifference: 82.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 135 SDtfs, 95 SDslu, 87 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 103.2ms 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: 28.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.6ms SsaConstructionTime, 27.3ms SatisfiabilityAnalysisTime, 179.9ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...