/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 20:50:43,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 20:50:43,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 20:50:43,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-01-16 20:50:43,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 20:50:43,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 20:50:43,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 20:50:43,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 20:50:43,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 20:50:43,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 20:50:43,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 20:50:43,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 20:50:43,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 20:50:43,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 20:50:43,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 20:50:43,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 20:50:43,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 20:50:43,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 20:50:43,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 20:50:43,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 20:50:43,259 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-MCR.epf [2020-01-16 20:50:43,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 20:50:43,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 20:50:43,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 20:50:43,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 20:50:43,275 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 20:50:43,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 20:50:43,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 20:50:43,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 20:50:43,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 20:50:43,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 20:50:43,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 20:50:43,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 20:50:43,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 20:50:43,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 20:50:43,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 20:50:43,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 20:50:43,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 20:50:43,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 20:50:43,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 20:50:43,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 20:50:43,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 20:50:43,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 20:50:43,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 20:50:43,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 20:50:43,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 20:50:43,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 20:50:43,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 20:50:43,280 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-01-16 20:50:43,280 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-01-16 20:50:43,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 20:50:43,280 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-01-16 20:50:43,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 20:50:43,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 20:50:43,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 20:50:43,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 20:50:43,611 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 20:50:43,612 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 20:50:43,613 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2020-01-16 20:50:43,613 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2020-01-16 20:50:43,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 20:50:43,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 20:50:43,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 20:50:43,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 20:50:43,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 20:50:43,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 20:50:43,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 20:50:43,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 20:50:43,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 20:50:43,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/1) ... [2020-01-16 20:50:43,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 20:50:43,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 20:50:43,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 20:50:43,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 20:50:43,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (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 [2020-01-16 20:50:43,792 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 20:50:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 20:50:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 20:50:43,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 20:50:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 20:50:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 20:50:43,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 20:50:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 20:50:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 20:50:43,795 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 20:50:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 20:50:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 20:50:43,796 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 20:50:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 20:50:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 20:50:43,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 20:50:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 20:50:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 20:50:43,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 20:50:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 20:50:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 20:50:43,799 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 20:50:44,011 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 20:50:44,012 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 20:50:44,013 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 08:50:44 BoogieIcfgContainer [2020-01-16 20:50:44,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 20:50:44,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 20:50:44,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 20:50:44,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 20:50:44,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:43" (1/2) ... [2020-01-16 20:50:44,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15901945 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 08:50:44, skipping insertion in model container [2020-01-16 20:50:44,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 08:50:44" (2/2) ... [2020-01-16 20:50:44,021 INFO L109 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2020-01-16 20:50:44,033 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 20:50:44,034 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 20:50:44,054 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 20:50:44,056 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 20:50:44,272 INFO L250 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-01-16 20:50:44,297 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 20:50:44,297 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 20:50:44,297 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 20:50:44,297 INFO L377 AbstractCegarLoop]: Backedges is MCR [2020-01-16 20:50:44,297 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 20:50:44,298 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 20:50:44,298 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 20:50:44,298 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 20:50:44,311 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions [2020-01-16 20:50:44,662 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4463 states. [2020-01-16 20:50:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states. [2020-01-16 20:50:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-01-16 20:50:44,718 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:44,719 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 20:50:44,720 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 20:50:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:44,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1530136965, now seen corresponding path program 1 times [2020-01-16 20:50:44,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:44,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280494383] [2020-01-16 20:50:44,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 20:50:45,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280494383] [2020-01-16 20:50:45,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:45,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:45,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2709872] [2020-01-16 20:50:45,041 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:45,053 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:45,382 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 20:50:45,382 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:45,417 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 11 times. [2020-01-16 20:50:45,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:45,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:45,444 INFO L87 Difference]: Start difference. First operand 4463 states. Second operand 3 states. [2020-01-16 20:50:45,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:45,533 INFO L93 Difference]: Finished difference Result 3545 states and 15330 transitions. [2020-01-16 20:50:45,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:45,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-01-16 20:50:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:45,630 INFO L225 Difference]: With dead ends: 3545 [2020-01-16 20:50:45,630 INFO L226 Difference]: Without dead ends: 3543 [2020-01-16 20:50:45,634 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2020-01-16 20:50:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2020-01-16 20:50:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2020-01-16 20:50:46,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 15328 transitions. [2020-01-16 20:50:46,032 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 15328 transitions. Word has length 25 [2020-01-16 20:50:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:46,033 INFO L478 AbstractCegarLoop]: Abstraction has 3543 states and 15328 transitions. [2020-01-16 20:50:46,034 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 15328 transitions. [2020-01-16 20:50:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-01-16 20:50:46,052 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:46,052 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 20:50:46,053 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 20:50:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:46,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1760531173, now seen corresponding path program 1 times [2020-01-16 20:50:46,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:46,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268989425] [2020-01-16 20:50:46,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 20:50:46,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268989425] [2020-01-16 20:50:46,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:46,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:46,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [501505867] [2020-01-16 20:50:46,121 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:46,125 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:46,362 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 20:50:46,362 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:46,375 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 13 times. [2020-01-16 20:50:46,377 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:46,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:46,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:46,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:46,378 INFO L87 Difference]: Start difference. First operand 3543 states and 15328 transitions. Second operand 3 states. [2020-01-16 20:50:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:46,452 INFO L93 Difference]: Finished difference Result 2724 states and 11575 transitions. [2020-01-16 20:50:46,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:46,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-01-16 20:50:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:46,481 INFO L225 Difference]: With dead ends: 2724 [2020-01-16 20:50:46,482 INFO L226 Difference]: Without dead ends: 2724 [2020-01-16 20:50:46,483 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2020-01-16 20:50:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2724. [2020-01-16 20:50:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-01-16 20:50:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 11575 transitions. [2020-01-16 20:50:46,619 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 11575 transitions. Word has length 25 [2020-01-16 20:50:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:46,620 INFO L478 AbstractCegarLoop]: Abstraction has 2724 states and 11575 transitions. [2020-01-16 20:50:46,620 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 11575 transitions. [2020-01-16 20:50:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-01-16 20:50:46,632 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:46,632 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 20:50:46,633 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 20:50:46,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:46,634 INFO L82 PathProgramCache]: Analyzing trace with hash 726058139, now seen corresponding path program 1 times [2020-01-16 20:50:46,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:46,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320706763] [2020-01-16 20:50:46,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 20:50:46,684 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320706763] [2020-01-16 20:50:46,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:46,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:46,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1205752276] [2020-01-16 20:50:46,685 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:46,687 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:46,857 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 20:50:46,857 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:46,869 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 16 times. [2020-01-16 20:50:46,870 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:46,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:46,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:46,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:46,871 INFO L87 Difference]: Start difference. First operand 2724 states and 11575 transitions. Second operand 3 states. [2020-01-16 20:50:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:46,909 INFO L93 Difference]: Finished difference Result 2106 states and 8830 transitions. [2020-01-16 20:50:46,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:46,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-01-16 20:50:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:46,930 INFO L225 Difference]: With dead ends: 2106 [2020-01-16 20:50:46,930 INFO L226 Difference]: Without dead ends: 2106 [2020-01-16 20:50:46,931 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-01-16 20:50:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2020-01-16 20:50:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-01-16 20:50:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 8830 transitions. [2020-01-16 20:50:47,040 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 8830 transitions. Word has length 25 [2020-01-16 20:50:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:47,040 INFO L478 AbstractCegarLoop]: Abstraction has 2106 states and 8830 transitions. [2020-01-16 20:50:47,041 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 8830 transitions. [2020-01-16 20:50:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-01-16 20:50:47,048 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:47,049 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 20:50:47,049 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 20:50:47,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:47,049 INFO L82 PathProgramCache]: Analyzing trace with hash 130806073, now seen corresponding path program 1 times [2020-01-16 20:50:47,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:47,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229230328] [2020-01-16 20:50:47,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 20:50:47,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229230328] [2020-01-16 20:50:47,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:47,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:47,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [482268333] [2020-01-16 20:50:47,114 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:47,117 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:47,255 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 20:50:47,255 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:47,263 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-01-16 20:50:47,264 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:47,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:47,264 INFO L87 Difference]: Start difference. First operand 2106 states and 8830 transitions. Second operand 3 states. [2020-01-16 20:50:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:47,284 INFO L93 Difference]: Finished difference Result 1863 states and 7615 transitions. [2020-01-16 20:50:47,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:47,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-01-16 20:50:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:47,301 INFO L225 Difference]: With dead ends: 1863 [2020-01-16 20:50:47,302 INFO L226 Difference]: Without dead ends: 1863 [2020-01-16 20:50:47,302 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2020-01-16 20:50:47,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1863. [2020-01-16 20:50:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1863 states. [2020-01-16 20:50:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7615 transitions. [2020-01-16 20:50:47,390 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7615 transitions. Word has length 25 [2020-01-16 20:50:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:47,391 INFO L478 AbstractCegarLoop]: Abstraction has 1863 states and 7615 transitions. [2020-01-16 20:50:47,391 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:47,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7615 transitions. [2020-01-16 20:50:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-01-16 20:50:47,398 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:47,398 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 20:50:47,399 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 20:50:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:47,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1353410907, now seen corresponding path program 1 times [2020-01-16 20:50:47,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:47,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946131657] [2020-01-16 20:50:47,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 20:50:47,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946131657] [2020-01-16 20:50:47,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:47,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 20:50:47,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1704470792] [2020-01-16 20:50:47,830 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:47,832 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:47,943 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 1458 states and 5833 transitions. [2020-01-16 20:50:47,944 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:50,037 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 144 times. [2020-01-16 20:50:50,037 INFO L458 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-01-16 20:50:50,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:50,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-01-16 20:50:50,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=667, Invalid=3493, Unknown=0, NotChecked=0, Total=4160 [2020-01-16 20:50:50,041 INFO L87 Difference]: Start difference. First operand 1863 states and 7615 transitions. Second operand 65 states. [2020-01-16 20:50:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:51,158 INFO L93 Difference]: Finished difference Result 1862 states and 7614 transitions. [2020-01-16 20:50:51,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-01-16 20:50:51,159 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 25 [2020-01-16 20:50:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:51,159 INFO L225 Difference]: With dead ends: 1862 [2020-01-16 20:50:51,159 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 20:50:51,161 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2751 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=732, Invalid=3558, Unknown=0, NotChecked=0, Total=4290 [2020-01-16 20:50:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 20:50:51,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 20:50:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 20:50:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 20:50:51,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-01-16 20:50:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:51,162 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 20:50:51,162 INFO L479 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-01-16 20:50:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 20:50:51,162 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 20:50:51,168 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 08:50:51 BasicIcfg [2020-01-16 20:50:51,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 20:50:51,171 INFO L168 Benchmark]: Toolchain (without parser) took 7517.41 ms. Allocated memory was 144.2 MB in the beginning and 410.0 MB in the end (delta: 265.8 MB). Free memory was 119.2 MB in the beginning and 210.5 MB in the end (delta: -91.3 MB). Peak memory consumption was 174.6 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:51,172 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 20:50:51,173 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.73 ms. Allocated memory is still 144.2 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:51,174 INFO L168 Benchmark]: Boogie Preprocessor took 22.62 ms. Allocated memory is still 144.2 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:51,174 INFO L168 Benchmark]: RCFGBuilder took 298.47 ms. Allocated memory is still 144.2 MB. Free memory was 116.2 MB in the beginning and 104.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:51,175 INFO L168 Benchmark]: TraceAbstraction took 7153.99 ms. Allocated memory was 144.2 MB in the beginning and 410.0 MB in the end (delta: 265.8 MB). Free memory was 103.9 MB in the beginning and 210.5 MB in the end (delta: -106.6 MB). Peak memory consumption was 159.2 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:51,179 INFO L335 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 0.19 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.73 ms. Allocated memory is still 144.2 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.62 ms. Allocated memory is still 144.2 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 298.47 ms. Allocated memory is still 144.2 MB. Free memory was 116.2 MB in the beginning and 104.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7153.99 ms. Allocated memory was 144.2 MB in the beginning and 410.0 MB in the end (delta: 265.8 MB). Free memory was 103.9 MB in the beginning and 210.5 MB in the end (delta: -106.6 MB). Peak memory consumption was 159.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 6.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 779 SDtfs, 733 SDslu, 5870 SDs, 0 SdLazy, 982 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2751 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4463occurred 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: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 15648 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...