/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/weaver-benchmarks/generated/test/easy3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-19 20:42:25,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 20:42:25,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 20:42:25,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 20:42:25,242 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 [2021-02-19 20:42:25,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 20:42:25,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 20:42:25,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-19 20:42:25,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-19 20:42:25,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 20:42:25,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 20:42:25,270 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 20:42:25,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 20:42:25,270 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 20:42:25,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 20:42:25,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 20:42:25,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 20:42:25,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 20:42:25,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 20:42:25,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 20:42:25,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 20:42:25,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 20:42:25,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 20:42:25,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 20:42:25,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 20:42:25,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 20:42:25,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-19 20:42:25,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 20:42:25,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 20:42:25,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 20:42:25,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 20:42:25,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 20:42:25,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 20:42:25,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 20:42:25,273 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-19 20:42:25,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 20:42:25,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 20:42:25,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 20:42:25,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 20:42:25,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 20:42:25,671 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-19 20:42:25,677 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-19 20:42:25,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy3.wvr.bpl [2021-02-19 20:42:25,679 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy3.wvr.bpl' [2021-02-19 20:42:25,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 20:42:25,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 20:42:25,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-19 20:42:25,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-19 20:42:25,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-19 20:42:25,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-19 20:42:25,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 20:42:25,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 20:42:25,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 20:42:25,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/1) ... [2021-02-19 20:42:25,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 20:42:25,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 20:42:25,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 20:42:25,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 20:42:25,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (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 [2021-02-19 20:42:25,889 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-19 20:42:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 20:42:25,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 20:42:26,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 20:42:26,055 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 20:42:26,058 INFO L202 PluginConnector]: Adding new model easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 08:42:26 BoogieIcfgContainer [2021-02-19 20:42:26,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 20:42:26,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 20:42:26,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 20:42:26,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 20:42:26,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 08:42:25" (1/2) ... [2021-02-19 20:42:26,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2007c7e6 and model type easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 08:42:26, skipping insertion in model container [2021-02-19 20:42:26,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 08:42:26" (2/2) ... [2021-02-19 20:42:26,068 INFO L111 eAbstractionObserver]: Analyzing ICFG easy3.wvr.bpl [2021-02-19 20:42:26,079 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 20:42:26,084 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 20:42:26,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 20:42:26,152 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 20:42:26,152 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 20:42:26,153 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 20:42:26,153 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 20:42:26,153 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 20:42:26,153 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 20:42:26,154 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 20:42:26,154 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 20:42:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-02-19 20:42:26,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-02-19 20:42:26,196 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:26,197 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-02-19 20:42:26,198 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:26,210 INFO L82 PathProgramCache]: Analyzing trace with hash 30208, now seen corresponding path program 1 times [2021-02-19 20:42:26,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:26,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116077813] [2021-02-19 20:42:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:26,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116077813] [2021-02-19 20:42:26,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:26,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-02-19 20:42:26,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354671270] [2021-02-19 20:42:26,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 20:42:26,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:26,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 20:42:26,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:42:26,439 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-02-19 20:42:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:26,480 INFO L93 Difference]: Finished difference Result 10 states and 13 transitions. [2021-02-19 20:42:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 20:42:26,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-02-19 20:42:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:26,490 INFO L225 Difference]: With dead ends: 10 [2021-02-19 20:42:26,490 INFO L226 Difference]: Without dead ends: 6 [2021-02-19 20:42:26,493 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:42:26,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-02-19 20:42:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-02-19 20:42:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-02-19 20:42:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-02-19 20:42:26,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 8 transitions. Word has length 3 [2021-02-19 20:42:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:26,524 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-02-19 20:42:26,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-02-19 20:42:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 8 transitions. [2021-02-19 20:42:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-02-19 20:42:26,525 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 20:42:26,525 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-02-19 20:42:26,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 20:42:26,526 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 20:42:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 20:42:26,527 INFO L82 PathProgramCache]: Analyzing trace with hash 28758342, now seen corresponding path program 1 times [2021-02-19 20:42:26,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 20:42:26,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179942458] [2021-02-19 20:42:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 20:42:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 20:42:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 20:42:26,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179942458] [2021-02-19 20:42:26,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 20:42:26,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 20:42:26,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065128466] [2021-02-19 20:42:26,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 20:42:26,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 20:42:26,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 20:42:26,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:42:26,585 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-02-19 20:42:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 20:42:26,625 INFO L93 Difference]: Finished difference Result 9 states and 14 transitions. [2021-02-19 20:42:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 20:42:26,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-02-19 20:42:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 20:42:26,627 INFO L225 Difference]: With dead ends: 9 [2021-02-19 20:42:26,627 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 20:42:26,628 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 20:42:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 20:42:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 20:42:26,629 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) [2021-02-19 20:42:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 20:42:26,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-02-19 20:42:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 20:42:26,629 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 20:42:26,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-02-19 20:42:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 20:42:26,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 20:42:26,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 20:42:26,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 20:42:26,649 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(lines 12 28) no Hoare annotation was computed. [2021-02-19 20:42:26,650 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startENTRY(lines 12 28) no Hoare annotation was computed. [2021-02-19 20:42:26,650 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(lines 12 28) no Hoare annotation was computed. [2021-02-19 20:42:26,650 INFO L198 CegarLoopUtils]: For program point L27(line 27) no Hoare annotation was computed. [2021-02-19 20:42:26,650 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 27) no Hoare annotation was computed. [2021-02-19 20:42:26,650 INFO L198 CegarLoopUtils]: For program point L19(lines 19 24) no Hoare annotation was computed. [2021-02-19 20:42:26,651 INFO L194 CegarLoopUtils]: At program point L19-1(lines 16 25) the Hoare annotation is: (or (= new v_old) (<= L 0)) [2021-02-19 20:42:26,663 INFO L202 PluginConnector]: Adding new model easy3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 08:42:26 BoogieIcfgContainer [2021-02-19 20:42:26,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 20:42:26,665 INFO L168 Benchmark]: Toolchain (without parser) took 941.48 ms. Allocated memory is still 352.3 MB. Free memory was 332.5 MB in the beginning and 324.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.0 GB. [2021-02-19 20:42:26,665 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.33 ms. Allocated memory is still 352.3 MB. Free memory is still 333.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 20:42:26,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.56 ms. Allocated memory is still 352.3 MB. Free memory was 331.9 MB in the beginning and 330.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 20:42:26,666 INFO L168 Benchmark]: Boogie Preprocessor took 17.46 ms. Allocated memory is still 352.3 MB. Free memory was 330.6 MB in the beginning and 329.6 MB in the end (delta: 947.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 20:42:26,667 INFO L168 Benchmark]: RCFGBuilder took 277.85 ms. Allocated memory is still 352.3 MB. Free memory was 329.5 MB in the beginning and 321.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-02-19 20:42:26,668 INFO L168 Benchmark]: TraceAbstraction took 602.42 ms. Allocated memory is still 352.3 MB. Free memory was 321.0 MB in the beginning and 324.3 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 20:42:26,670 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 0.33 ms. Allocated memory is still 352.3 MB. Free memory is still 333.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.56 ms. Allocated memory is still 352.3 MB. Free memory was 331.9 MB in the beginning and 330.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.46 ms. Allocated memory is still 352.3 MB. Free memory was 330.6 MB in the beginning and 329.6 MB in the end (delta: 947.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 277.85 ms. Allocated memory is still 352.3 MB. Free memory was 329.5 MB in the beginning and 321.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 602.42 ms. Allocated memory is still 352.3 MB. Free memory was 321.0 MB in the beginning and 324.3 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: new == v_old || L <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 1 SDslu, 4 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 3 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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...