/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_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 22:32:13,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 22:32:13,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 22:32:13,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 22:32:13,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 22:32:13,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 22:32:13,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 22:32:13,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 22:32:13,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 22:32:13,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 22:32:13,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 22:32:13,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 22:32:13,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 22:32:13,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 22:32:13,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 22:32:13,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 22:32:13,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 22:32:13,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 22:32:13,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 22:32:13,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 22:32:13,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 22:32:13,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 22:32:13,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 22:32:13,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 22:32:13,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 22:32:13,893 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 [2020-02-10 22:32:13,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 22:32:13,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 22:32:13,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 22:32:13,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 22:32:13,909 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 22:32:13,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 22:32:13,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 22:32:13,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 22:32:13,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 22:32:13,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 22:32:13,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 22:32:13,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 22:32:13,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 22:32:13,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 22:32:13,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 22:32:13,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 22:32:13,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 22:32:13,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 22:32:13,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 22:32:13,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 22:32:13,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 22:32:13,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 22:32:13,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 22:32:13,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 22:32:13,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 22:32:13,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 22:32:13,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 22:32:13,914 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-02-10 22:32:13,914 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-02-10 22:32:13,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-02-10 22:32:13,915 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-02-10 22:32:13,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 22:32:14,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 22:32:14,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 22:32:14,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 22:32:14,265 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 22:32:14,267 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 22:32:14,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2020-02-10 22:32:14,268 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2020-02-10 22:32:14,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 22:32:14,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 22:32:14,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 22:32:14,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 22:32:14,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 22:32:14,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 22:32:14,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 22:32:14,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 22:32:14,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 22:32:14,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/1) ... [2020-02-10 22:32:14,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 22:32:14,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 22:32:14,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 22:32:14,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 22:32:14,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (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 [2020-02-10 22:32:14,444 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 22:32:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 22:32:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 22:32:14,445 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 22:32:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 22:32:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 22:32:14,445 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 22:32:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 22:32:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 22:32:14,446 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 22:32:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 22:32:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 22:32:14,446 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 22:32:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 22:32:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 22:32:14,447 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 22:32:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 22:32:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 22:32:14,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 22:32:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 22:32:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 22:32:14,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-10 22:32:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-10 22:32:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-10 22:32:14,450 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 22:32:14,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 22:32:14,733 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 22:32:14,737 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:32:14 BoogieIcfgContainer [2020-02-10 22:32:14,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 22:32:14,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 22:32:14,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 22:32:14,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 22:32:14,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 10:32:14" (1/2) ... [2020-02-10 22:32:14,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4f37e7 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:32:14, skipping insertion in model container [2020-02-10 22:32:14,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:32:14" (2/2) ... [2020-02-10 22:32:14,760 INFO L109 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2020-02-10 22:32:14,772 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-02-10 22:32:14,773 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 22:32:14,782 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 22:32:14,783 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 22:32:14,984 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-02-10 22:32:15,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 22:32:15,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-02-10 22:32:15,003 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 22:32:15,003 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-02-10 22:32:15,003 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 22:32:15,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 22:32:15,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 22:32:15,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 22:32:15,017 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 80 transitions [2020-02-10 22:32:17,601 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17480 states. [2020-02-10 22:32:17,603 INFO L276 IsEmpty]: Start isEmpty. Operand 17480 states. [2020-02-10 22:32:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-02-10 22:32:17,740 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:17,741 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, 1, 1, 1, 1] [2020-02-10 22:32:17,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:17,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1615144961, now seen corresponding path program 1 times [2020-02-10 22:32:17,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:17,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107335600] [2020-02-10 22:32:17,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:17,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107335600] [2020-02-10 22:32:17,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:17,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:17,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [373717743] [2020-02-10 22:32:17,960 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:17,967 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:18,935 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-02-10 22:32:18,936 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:18,995 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 10 times. [2020-02-10 22:32:18,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:18,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:19,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:19,018 INFO L87 Difference]: Start difference. First operand 17480 states. Second operand 3 states. [2020-02-10 22:32:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:19,323 INFO L93 Difference]: Finished difference Result 14078 states and 71196 transitions. [2020-02-10 22:32:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:19,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-02-10 22:32:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:19,521 INFO L225 Difference]: With dead ends: 14078 [2020-02-10 22:32:19,522 INFO L226 Difference]: Without dead ends: 14076 [2020-02-10 22:32:19,527 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2020-02-10 22:32:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 14076. [2020-02-10 22:32:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14076 states. [2020-02-10 22:32:20,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14076 states to 14076 states and 71194 transitions. [2020-02-10 22:32:20,804 INFO L78 Accepts]: Start accepts. Automaton has 14076 states and 71194 transitions. Word has length 29 [2020-02-10 22:32:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:20,805 INFO L479 AbstractCegarLoop]: Abstraction has 14076 states and 71194 transitions. [2020-02-10 22:32:20,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 14076 states and 71194 transitions. [2020-02-10 22:32:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-02-10 22:32:20,893 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:20,894 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, 1, 1, 1, 1] [2020-02-10 22:32:20,894 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:20,895 INFO L82 PathProgramCache]: Analyzing trace with hash -427651033, now seen corresponding path program 1 times [2020-02-10 22:32:20,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:20,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472203666] [2020-02-10 22:32:20,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:20,971 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472203666] [2020-02-10 22:32:20,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:20,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:20,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [826489699] [2020-02-10 22:32:20,973 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:20,978 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:22,067 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-02-10 22:32:22,067 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:22,097 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 13 times. [2020-02-10 22:32:22,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:22,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:22,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:22,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:22,103 INFO L87 Difference]: Start difference. First operand 14076 states and 71194 transitions. Second operand 3 states. [2020-02-10 22:32:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:22,249 INFO L93 Difference]: Finished difference Result 10782 states and 53509 transitions. [2020-02-10 22:32:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:22,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-02-10 22:32:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:22,296 INFO L225 Difference]: With dead ends: 10782 [2020-02-10 22:32:22,297 INFO L226 Difference]: Without dead ends: 10782 [2020-02-10 22:32:22,298 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 [2020-02-10 22:32:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10782 states. [2020-02-10 22:32:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10782 to 10782. [2020-02-10 22:32:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10782 states. [2020-02-10 22:32:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 53509 transitions. [2020-02-10 22:32:22,962 INFO L78 Accepts]: Start accepts. Automaton has 10782 states and 53509 transitions. Word has length 29 [2020-02-10 22:32:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:22,963 INFO L479 AbstractCegarLoop]: Abstraction has 10782 states and 53509 transitions. [2020-02-10 22:32:22,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10782 states and 53509 transitions. [2020-02-10 22:32:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-02-10 22:32:23,000 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:23,000 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, 1, 1, 1, 1] [2020-02-10 22:32:23,000 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash -968296341, now seen corresponding path program 1 times [2020-02-10 22:32:23,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:23,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634949405] [2020-02-10 22:32:23,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:23,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634949405] [2020-02-10 22:32:23,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:23,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:23,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1027639566] [2020-02-10 22:32:23,033 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:23,035 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:23,519 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-02-10 22:32:23,520 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:23,549 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 20 times. [2020-02-10 22:32:23,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:23,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:23,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:23,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:23,550 INFO L87 Difference]: Start difference. First operand 10782 states and 53509 transitions. Second operand 3 states. [2020-02-10 22:32:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:23,661 INFO L93 Difference]: Finished difference Result 8172 states and 40171 transitions. [2020-02-10 22:32:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:23,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-02-10 22:32:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:23,700 INFO L225 Difference]: With dead ends: 8172 [2020-02-10 22:32:23,700 INFO L226 Difference]: Without dead ends: 8172 [2020-02-10 22:32:23,700 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2020-02-10 22:32:24,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 8172. [2020-02-10 22:32:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8172 states. [2020-02-10 22:32:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8172 states to 8172 states and 40171 transitions. [2020-02-10 22:32:24,104 INFO L78 Accepts]: Start accepts. Automaton has 8172 states and 40171 transitions. Word has length 29 [2020-02-10 22:32:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:24,105 INFO L479 AbstractCegarLoop]: Abstraction has 8172 states and 40171 transitions. [2020-02-10 22:32:24,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 8172 states and 40171 transitions. [2020-02-10 22:32:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-02-10 22:32:24,128 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:24,128 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, 1, 1, 1, 1] [2020-02-10 22:32:24,129 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:24,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1337230217, now seen corresponding path program 1 times [2020-02-10 22:32:24,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:24,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573171086] [2020-02-10 22:32:24,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:24,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573171086] [2020-02-10 22:32:24,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:24,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:24,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1505918331] [2020-02-10 22:32:24,164 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:24,166 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:24,545 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-02-10 22:32:24,546 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:24,561 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 18 times. [2020-02-10 22:32:24,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:24,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:24,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:24,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:24,563 INFO L87 Difference]: Start difference. First operand 8172 states and 40171 transitions. Second operand 3 states. [2020-02-10 22:32:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:24,626 INFO L93 Difference]: Finished difference Result 6318 states and 30700 transitions. [2020-02-10 22:32:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:24,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-02-10 22:32:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:24,670 INFO L225 Difference]: With dead ends: 6318 [2020-02-10 22:32:24,671 INFO L226 Difference]: Without dead ends: 6318 [2020-02-10 22:32:24,673 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2020-02-10 22:32:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 6318. [2020-02-10 22:32:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6318 states. [2020-02-10 22:32:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 30700 transitions. [2020-02-10 22:32:25,749 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 30700 transitions. Word has length 29 [2020-02-10 22:32:25,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:25,750 INFO L479 AbstractCegarLoop]: Abstraction has 6318 states and 30700 transitions. [2020-02-10 22:32:25,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 30700 transitions. [2020-02-10 22:32:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-02-10 22:32:25,772 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:25,772 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, 1, 1, 1, 1] [2020-02-10 22:32:25,773 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:25,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:25,773 INFO L82 PathProgramCache]: Analyzing trace with hash 598648171, now seen corresponding path program 1 times [2020-02-10 22:32:25,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:25,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762984910] [2020-02-10 22:32:25,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:25,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762984910] [2020-02-10 22:32:25,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:25,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:32:25,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [49117512] [2020-02-10 22:32:25,837 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:25,839 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:26,225 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-02-10 22:32:26,225 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:26,240 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-02-10 22:32:26,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:32:26,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:26,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:32:26,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:32:26,241 INFO L87 Difference]: Start difference. First operand 6318 states and 30700 transitions. Second operand 3 states. [2020-02-10 22:32:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:32:26,293 INFO L93 Difference]: Finished difference Result 5103 states and 24301 transitions. [2020-02-10 22:32:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:32:26,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-02-10 22:32:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:32:26,316 INFO L225 Difference]: With dead ends: 5103 [2020-02-10 22:32:26,316 INFO L226 Difference]: Without dead ends: 5103 [2020-02-10 22:32:26,317 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 [2020-02-10 22:32:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2020-02-10 22:32:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 5103. [2020-02-10 22:32:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5103 states. [2020-02-10 22:32:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 24301 transitions. [2020-02-10 22:32:26,627 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 24301 transitions. Word has length 29 [2020-02-10 22:32:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:32:26,628 INFO L479 AbstractCegarLoop]: Abstraction has 5103 states and 24301 transitions. [2020-02-10 22:32:26,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:32:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 24301 transitions. [2020-02-10 22:32:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-02-10 22:32:26,648 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:32:26,648 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, 1, 1, 1, 1] [2020-02-10 22:32:26,649 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:32:26,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:32:26,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1019223655, now seen corresponding path program 1 times [2020-02-10 22:32:26,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:32:26,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165442759] [2020-02-10 22:32:26,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:32:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:32:27,228 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2020-02-10 22:32:27,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:32:27,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165442759] [2020-02-10 22:32:27,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:32:27,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 22:32:27,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [325391928] [2020-02-10 22:32:27,379 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:32:27,381 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:32:27,811 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-02-10 22:32:27,811 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:32:39,224 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 330 times. [2020-02-10 22:32:39,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2020-02-10 22:32:39,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:32:39,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2020-02-10 22:32:39,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2517, Invalid=23243, Unknown=0, NotChecked=0, Total=25760 [2020-02-10 22:32:39,234 INFO L87 Difference]: Start difference. First operand 5103 states and 24301 transitions. Second operand 161 states. [2020-02-10 22:33:05,996 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:06,175 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-02-10 22:33:06,926 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-02-10 22:33:07,350 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:07,551 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-02-10 22:33:08,104 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-02-10 22:33:08,425 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:08,552 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:08,773 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2020-02-10 22:33:08,919 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-02-10 22:33:09,080 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2020-02-10 22:33:09,409 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:09,607 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-02-10 22:33:09,799 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:09,986 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:10,134 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:10,351 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-02-10 22:33:10,516 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-02-10 22:33:10,682 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-02-10 22:33:10,873 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-02-10 22:33:11,035 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-02-10 22:33:11,177 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-02-10 22:33:11,391 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-02-10 22:33:11,554 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-02-10 22:33:11,707 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-02-10 22:33:11,866 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-02-10 22:33:12,004 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:12,189 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:12,435 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-02-10 22:33:12,587 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-02-10 22:33:12,742 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-02-10 22:33:12,955 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:13,125 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:13,282 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:13,790 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-02-10 22:33:13,982 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-02-10 22:33:14,163 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:14,319 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:14,517 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:14,814 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-02-10 22:33:15,013 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-02-10 22:33:15,211 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-02-10 22:33:15,435 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 29 [2020-02-10 22:33:15,584 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-02-10 22:33:15,765 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-02-10 22:33:16,189 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 29 [2020-02-10 22:33:16,379 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-02-10 22:33:16,564 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-02-10 22:33:16,866 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-02-10 22:33:17,116 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-02-10 22:33:17,284 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-02-10 22:33:17,460 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-02-10 22:33:17,759 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 27 [2020-02-10 22:33:18,019 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-02-10 22:33:18,269 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-02-10 22:33:18,465 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-02-10 22:33:18,770 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-02-10 22:33:18,971 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-02-10 22:33:19,266 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-02-10 22:33:19,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:33:19,604 INFO L93 Difference]: Finished difference Result 7710 states and 35965 transitions. [2020-02-10 22:33:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2020-02-10 22:33:19,607 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 29 [2020-02-10 22:33:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:33:19,618 INFO L225 Difference]: With dead ends: 7710 [2020-02-10 22:33:19,618 INFO L226 Difference]: Without dead ends: 3644 [2020-02-10 22:33:19,631 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31692 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=11784, Invalid=70298, Unknown=0, NotChecked=0, Total=82082 [2020-02-10 22:33:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-02-10 22:33:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3644. [2020-02-10 22:33:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3644 states. [2020-02-10 22:33:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 16523 transitions. [2020-02-10 22:33:19,868 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 16523 transitions. Word has length 29 [2020-02-10 22:33:19,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:33:19,869 INFO L479 AbstractCegarLoop]: Abstraction has 3644 states and 16523 transitions. [2020-02-10 22:33:19,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 161 states. [2020-02-10 22:33:19,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 16523 transitions. [2020-02-10 22:33:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-02-10 22:33:19,879 INFO L407 BasicCegarLoop]: Found error trace [2020-02-10 22:33:19,879 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, 1, 1, 1, 1] [2020-02-10 22:33:19,880 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 22:33:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 22:33:19,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1188427031, now seen corresponding path program 1 times [2020-02-10 22:33:19,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 22:33:19,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537158781] [2020-02-10 22:33:19,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 22:33:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 22:33:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 22:33:19,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537158781] [2020-02-10 22:33:19,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 22:33:19,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 22:33:19,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1425221843] [2020-02-10 22:33:19,940 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-10 22:33:19,944 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-10 22:33:20,321 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-02-10 22:33:20,322 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-10 22:33:20,332 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-02-10 22:33:20,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 22:33:20,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 22:33:20,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 22:33:20,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:33:20,333 INFO L87 Difference]: Start difference. First operand 3644 states and 16523 transitions. Second operand 3 states. [2020-02-10 22:33:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-02-10 22:33:20,346 INFO L93 Difference]: Finished difference Result 2550 states and 11419 transitions. [2020-02-10 22:33:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 22:33:20,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-02-10 22:33:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-02-10 22:33:20,347 INFO L225 Difference]: With dead ends: 2550 [2020-02-10 22:33:20,347 INFO L226 Difference]: Without dead ends: 0 [2020-02-10 22:33:20,347 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 22:33:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-02-10 22:33:20,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-02-10 22:33:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-02-10 22:33:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-02-10 22:33:20,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-02-10 22:33:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-02-10 22:33:20,348 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-02-10 22:33:20,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 22:33:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-02-10 22:33:20,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-02-10 22:33:20,354 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 10:33:20 BasicIcfg [2020-02-10 22:33:20,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 22:33:20,356 INFO L168 Benchmark]: Toolchain (without parser) took 66044.67 ms. Allocated memory was 142.6 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 117.8 MB in the beginning and 765.9 MB in the end (delta: -648.1 MB). Peak memory consumption was 566.1 MB. Max. memory is 7.1 GB. [2020-02-10 22:33:20,356 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 22:33:20,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.15 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 115.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 22:33:20,358 INFO L168 Benchmark]: Boogie Preprocessor took 25.43 ms. Allocated memory is still 142.6 MB. Free memory was 115.9 MB in the beginning and 114.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-02-10 22:33:20,358 INFO L168 Benchmark]: RCFGBuilder took 358.18 ms. Allocated memory is still 142.6 MB. Free memory was 114.6 MB in the beginning and 101.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-02-10 22:33:20,359 INFO L168 Benchmark]: TraceAbstraction took 65611.08 ms. Allocated memory was 142.6 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 101.3 MB in the beginning and 765.9 MB in the end (delta: -664.6 MB). Peak memory consumption was 549.7 MB. Max. memory is 7.1 GB. [2020-02-10 22:33:20,362 INFO L336 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 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 119.0 MB in the beginning and 118.8 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 37.15 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 115.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.43 ms. Allocated memory is still 142.6 MB. Free memory was 115.9 MB in the beginning and 114.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.18 ms. Allocated memory is still 142.6 MB. Free memory was 114.6 MB in the beginning and 101.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 65611.08 ms. Allocated memory was 142.6 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 101.3 MB in the beginning and 765.9 MB in the end (delta: -664.6 MB). Peak memory consumption was 549.7 MB. Max. memory is 7.1 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 65.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 41.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 1655 SDtfs, 2375 SDslu, 81561 SDs, 0 SdLazy, 23117 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 594 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31692 ImplicationChecksByTransitivity, 29.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17480occurred 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: 3.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 203 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 28252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...