/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-abd8500 [2020-01-16 20:50:44,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 20:50:44,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 20:50:44,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 20:50:44,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 20:50:44,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 20:50:44,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 20:50:44,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 20:50:44,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 20:50:44,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 20:50:44,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 20:50:44,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 20:50:44,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 20:50:44,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 20:50:44,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 20:50:44,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 20:50:44,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 20:50:44,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 20:50:44,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 20:50:44,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 20:50:44,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 20:50:44,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 20:50:44,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 20:50:44,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 20:50:44,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 20:50:44,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 20:50:44,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 20:50:44,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 20:50:44,737 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 20:50:44,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 20:50:44,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 20:50:44,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 20:50:44,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 20:50:44,761 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 20:50:44,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 20:50:44,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 20:50:44,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 20:50:44,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 20:50:44,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 20:50:44,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 20:50:44,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 20:50:44,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 20:50:44,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 20:50:44,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 20:50:44,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 20:50:44,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 20:50:44,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 20:50:44,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 20:50:44,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 20:50:44,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 20:50:44,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 20:50:44,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 20:50:44,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 20:50:44,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 20:50:44,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 20:50:44,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 20:50:44,766 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-01-16 20:50:44,766 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-01-16 20:50:44,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 20:50:44,767 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-01-16 20:50:44,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 20:50:45,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 20:50:45,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 20:50:45,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 20:50:45,070 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 20:50:45,070 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 20:50:45,071 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2020-01-16 20:50:45,071 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2020-01-16 20:50:45,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 20:50:45,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 20:50:45,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 20:50:45,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 20:50:45,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 20:50:45,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 20:50:45,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 20:50:45,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 20:50:45,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 20:50:45,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/1) ... [2020-01-16 20:50:45,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 20:50:45,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 20:50:45,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 20:50:45,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 20:50:45,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (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 20:50:45,252 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 20:50:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 20:50:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 20:50:45,254 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 20:50:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 20:50:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 20:50:45,254 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 20:50:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 20:50:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 20:50:45,255 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 20:50:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 20:50:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 20:50:45,255 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 20:50:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 20:50:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 20:50:45,256 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 20:50:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 20:50:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 20:50:45,256 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 20:50:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 20:50:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 20:50:45,258 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 20:50:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 20:50:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 20:50:45,260 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 20:50:45,497 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 20:50:45,497 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 20:50:45,501 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 08:50:45 BoogieIcfgContainer [2020-01-16 20:50:45,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 20:50:45,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 20:50:45,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 20:50:45,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 20:50:45,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:45" (1/2) ... [2020-01-16 20:50:45,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9a3666 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 08:50:45, skipping insertion in model container [2020-01-16 20:50:45,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 08:50:45" (2/2) ... [2020-01-16 20:50:45,523 INFO L109 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2020-01-16 20:50:45,545 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 20:50:45,545 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 20:50:45,564 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 20:50:45,565 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 20:50:45,768 INFO L250 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-01-16 20:50:45,789 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 20:50:45,790 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 20:50:45,790 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 20:50:45,790 INFO L377 AbstractCegarLoop]: Backedges is MCR [2020-01-16 20:50:45,790 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 20:50:45,790 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 20:50:45,790 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 20:50:45,791 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 20:50:45,804 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 80 transitions [2020-01-16 20:50:47,728 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17480 states. [2020-01-16 20:50:47,730 INFO L276 IsEmpty]: Start isEmpty. Operand 17480 states. [2020-01-16 20:50:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-01-16 20:50:47,876 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:47,877 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] [2020-01-16 20:50:47,878 INFO L426 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]=== [2020-01-16 20:50:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1615144961, now seen corresponding path program 1 times [2020-01-16 20:50:47,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:47,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591327298] [2020-01-16 20:50:47,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:48,108 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 20:50:48,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591327298] [2020-01-16 20:50:48,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:48,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:48,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2072527060] [2020-01-16 20:50:48,501 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:48,508 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:49,360 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 20:50:49,361 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:49,432 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 10 times. [2020-01-16 20:50:49,433 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:49,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:49,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:49,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:49,451 INFO L87 Difference]: Start difference. First operand 17480 states. Second operand 3 states. [2020-01-16 20:50:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:49,806 INFO L93 Difference]: Finished difference Result 14078 states and 71196 transitions. [2020-01-16 20:50:49,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:49,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-01-16 20:50:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:49,993 INFO L225 Difference]: With dead ends: 14078 [2020-01-16 20:50:49,993 INFO L226 Difference]: Without dead ends: 14076 [2020-01-16 20:50:49,995 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 [2020-01-16 20:50:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2020-01-16 20:50:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 14076. [2020-01-16 20:50:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14076 states. [2020-01-16 20:50:51,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14076 states to 14076 states and 71194 transitions. [2020-01-16 20:50:51,554 INFO L78 Accepts]: Start accepts. Automaton has 14076 states and 71194 transitions. Word has length 29 [2020-01-16 20:50:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:51,555 INFO L478 AbstractCegarLoop]: Abstraction has 14076 states and 71194 transitions. [2020-01-16 20:50:51,555 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 14076 states and 71194 transitions. [2020-01-16 20:50:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-01-16 20:50:51,646 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:51,646 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] [2020-01-16 20:50:51,646 INFO L426 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]=== [2020-01-16 20:50:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:51,647 INFO L82 PathProgramCache]: Analyzing trace with hash -427651033, now seen corresponding path program 1 times [2020-01-16 20:50:51,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:51,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835542469] [2020-01-16 20:50:51,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:51,696 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 20:50:51,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835542469] [2020-01-16 20:50:51,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:51,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:51,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1951412263] [2020-01-16 20:50:51,698 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:51,701 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:52,874 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 20:50:52,874 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:52,909 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 13 times. [2020-01-16 20:50:52,910 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:52,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:52,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:52,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:52,912 INFO L87 Difference]: Start difference. First operand 14076 states and 71194 transitions. Second operand 3 states. [2020-01-16 20:50:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:53,090 INFO L93 Difference]: Finished difference Result 10782 states and 53509 transitions. [2020-01-16 20:50:53,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:53,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-01-16 20:50:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:53,147 INFO L225 Difference]: With dead ends: 10782 [2020-01-16 20:50:53,147 INFO L226 Difference]: Without dead ends: 10782 [2020-01-16 20:50:53,148 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 20:50:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10782 states. [2020-01-16 20:50:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10782 to 10782. [2020-01-16 20:50:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10782 states. [2020-01-16 20:50:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 53509 transitions. [2020-01-16 20:50:53,860 INFO L78 Accepts]: Start accepts. Automaton has 10782 states and 53509 transitions. Word has length 29 [2020-01-16 20:50:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:53,860 INFO L478 AbstractCegarLoop]: Abstraction has 10782 states and 53509 transitions. [2020-01-16 20:50:53,860 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 10782 states and 53509 transitions. [2020-01-16 20:50:53,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-01-16 20:50:53,897 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:53,898 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] [2020-01-16 20:50:53,898 INFO L426 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]=== [2020-01-16 20:50:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:53,898 INFO L82 PathProgramCache]: Analyzing trace with hash -968296341, now seen corresponding path program 1 times [2020-01-16 20:50:53,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:53,899 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046955036] [2020-01-16 20:50:53,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:53,959 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 20:50:53,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046955036] [2020-01-16 20:50:53,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:53,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:53,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [329903569] [2020-01-16 20:50:53,961 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:53,964 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:54,305 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 20:50:54,306 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:54,334 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 20 times. [2020-01-16 20:50:54,335 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:54,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:54,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:54,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:54,336 INFO L87 Difference]: Start difference. First operand 10782 states and 53509 transitions. Second operand 3 states. [2020-01-16 20:50:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:54,541 INFO L93 Difference]: Finished difference Result 8172 states and 40171 transitions. [2020-01-16 20:50:54,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:54,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-01-16 20:50:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:54,595 INFO L225 Difference]: With dead ends: 8172 [2020-01-16 20:50:54,595 INFO L226 Difference]: Without dead ends: 8172 [2020-01-16 20:50:54,596 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 [2020-01-16 20:50:54,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2020-01-16 20:50:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 8172. [2020-01-16 20:50:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8172 states. [2020-01-16 20:50:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8172 states to 8172 states and 40171 transitions. [2020-01-16 20:50:55,011 INFO L78 Accepts]: Start accepts. Automaton has 8172 states and 40171 transitions. Word has length 29 [2020-01-16 20:50:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:55,012 INFO L478 AbstractCegarLoop]: Abstraction has 8172 states and 40171 transitions. [2020-01-16 20:50:55,012 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 8172 states and 40171 transitions. [2020-01-16 20:50:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-01-16 20:50:55,033 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:55,033 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] [2020-01-16 20:50:55,033 INFO L426 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]=== [2020-01-16 20:50:55,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:55,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1337230217, now seen corresponding path program 1 times [2020-01-16 20:50:55,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:55,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972970920] [2020-01-16 20:50:55,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:55,059 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 20:50:55,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972970920] [2020-01-16 20:50:55,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:55,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:55,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [139523810] [2020-01-16 20:50:55,060 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:55,062 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:55,492 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 20:50:55,493 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:55,511 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 18 times. [2020-01-16 20:50:55,511 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:55,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:55,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:55,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:55,512 INFO L87 Difference]: Start difference. First operand 8172 states and 40171 transitions. Second operand 3 states. [2020-01-16 20:50:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:55,577 INFO L93 Difference]: Finished difference Result 6318 states and 30700 transitions. [2020-01-16 20:50:55,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:55,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-01-16 20:50:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:55,620 INFO L225 Difference]: With dead ends: 6318 [2020-01-16 20:50:55,620 INFO L226 Difference]: Without dead ends: 6318 [2020-01-16 20:50:55,622 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 [2020-01-16 20:50:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2020-01-16 20:50:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 6318. [2020-01-16 20:50:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6318 states. [2020-01-16 20:50:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 30700 transitions. [2020-01-16 20:50:55,945 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 30700 transitions. Word has length 29 [2020-01-16 20:50:55,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:55,945 INFO L478 AbstractCegarLoop]: Abstraction has 6318 states and 30700 transitions. [2020-01-16 20:50:55,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 30700 transitions. [2020-01-16 20:50:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-01-16 20:50:55,964 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:55,965 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] [2020-01-16 20:50:55,965 INFO L426 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]=== [2020-01-16 20:50:55,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:55,965 INFO L82 PathProgramCache]: Analyzing trace with hash 598648171, now seen corresponding path program 1 times [2020-01-16 20:50:55,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:55,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48738549] [2020-01-16 20:50:55,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:56,019 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 20:50:56,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48738549] [2020-01-16 20:50:56,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:56,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:56,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2017527638] [2020-01-16 20:50:56,021 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:56,023 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:56,446 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 20:50:56,446 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:56,462 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-01-16 20:50:56,463 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:56,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:56,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:56,464 INFO L87 Difference]: Start difference. First operand 6318 states and 30700 transitions. Second operand 3 states. [2020-01-16 20:50:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:56,508 INFO L93 Difference]: Finished difference Result 5103 states and 24301 transitions. [2020-01-16 20:50:56,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:56,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-01-16 20:50:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:56,534 INFO L225 Difference]: With dead ends: 5103 [2020-01-16 20:50:56,534 INFO L226 Difference]: Without dead ends: 5103 [2020-01-16 20:50:56,535 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 20:50:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2020-01-16 20:50:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 5103. [2020-01-16 20:50:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5103 states. [2020-01-16 20:50:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 24301 transitions. [2020-01-16 20:50:56,870 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 24301 transitions. Word has length 29 [2020-01-16 20:50:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:56,871 INFO L478 AbstractCegarLoop]: Abstraction has 5103 states and 24301 transitions. [2020-01-16 20:50:56,871 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 24301 transitions. [2020-01-16 20:50:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-01-16 20:50:56,890 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:56,891 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] [2020-01-16 20:50:56,891 INFO L426 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]=== [2020-01-16 20:50:56,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:56,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1019223655, now seen corresponding path program 1 times [2020-01-16 20:50:56,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:56,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717344033] [2020-01-16 20:50:56,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:57,504 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 20:50:57,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717344033] [2020-01-16 20:50:57,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:57,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-01-16 20:50:57,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [155283491] [2020-01-16 20:50:57,506 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:57,507 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:57,965 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 20:50:57,966 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:51:02,601 WARN L192 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2020-01-16 20:51:08,220 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 330 times. [2020-01-16 20:51:08,220 INFO L458 AbstractCegarLoop]: Interpolant automaton has 161 states [2020-01-16 20:51:08,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:51:08,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2020-01-16 20:51:08,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2517, Invalid=23243, Unknown=0, NotChecked=0, Total=25760 [2020-01-16 20:51:08,229 INFO L87 Difference]: Start difference. First operand 5103 states and 24301 transitions. Second operand 161 states. [2020-01-16 20:51:34,575 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:34,753 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-01-16 20:51:35,494 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-01-16 20:51:35,921 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:36,105 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-01-16 20:51:36,425 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-01-16 20:51:36,609 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-01-16 20:51:36,810 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:36,950 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:37,076 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:37,296 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2020-01-16 20:51:37,448 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-01-16 20:51:37,622 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2020-01-16 20:51:37,975 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:38,186 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-01-16 20:51:38,411 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:38,586 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:38,803 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:39,025 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-01-16 20:51:39,198 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-01-16 20:51:39,368 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-01-16 20:51:39,571 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-01-16 20:51:39,724 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-01-16 20:51:39,860 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-01-16 20:51:40,078 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-01-16 20:51:40,248 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-01-16 20:51:40,409 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-01-16 20:51:40,563 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-01-16 20:51:40,704 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:40,890 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:41,135 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-01-16 20:51:41,288 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-01-16 20:51:41,447 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-01-16 20:51:41,659 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:41,827 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:41,985 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:42,229 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 29 [2020-01-16 20:51:42,431 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-01-16 20:51:42,617 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-01-16 20:51:42,814 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:42,973 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:43,154 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:43,427 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-01-16 20:51:43,625 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-01-16 20:51:43,835 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-01-16 20:51:44,032 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 29 [2020-01-16 20:51:44,205 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-01-16 20:51:44,384 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-01-16 20:51:44,857 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 29 [2020-01-16 20:51:45,037 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-01-16 20:51:45,213 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-01-16 20:51:45,507 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-01-16 20:51:45,765 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 20:51:45,935 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 20:51:46,107 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 20:51:46,645 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-01-16 20:51:46,890 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-01-16 20:51:47,080 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 20:51:47,379 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-01-16 20:51:47,579 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 20:51:47,869 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-01-16 20:51:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:51:48,207 INFO L93 Difference]: Finished difference Result 7710 states and 35965 transitions. [2020-01-16 20:51:48,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2020-01-16 20:51:48,208 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 29 [2020-01-16 20:51:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:51:48,219 INFO L225 Difference]: With dead ends: 7710 [2020-01-16 20:51:48,219 INFO L226 Difference]: Without dead ends: 3644 [2020-01-16 20:51:48,230 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31692 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=11784, Invalid=70298, Unknown=0, NotChecked=0, Total=82082 [2020-01-16 20:51:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-01-16 20:51:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3644. [2020-01-16 20:51:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3644 states. [2020-01-16 20:51:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 16523 transitions. [2020-01-16 20:51:48,402 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 16523 transitions. Word has length 29 [2020-01-16 20:51:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:51:48,403 INFO L478 AbstractCegarLoop]: Abstraction has 3644 states and 16523 transitions. [2020-01-16 20:51:48,403 INFO L479 AbstractCegarLoop]: Interpolant automaton has 161 states. [2020-01-16 20:51:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 16523 transitions. [2020-01-16 20:51:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-01-16 20:51:48,414 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:51:48,415 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] [2020-01-16 20:51:48,415 INFO L426 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]=== [2020-01-16 20:51:48,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:51:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1188427031, now seen corresponding path program 1 times [2020-01-16 20:51:48,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:51:48,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898748519] [2020-01-16 20:51:48,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:51:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:51:48,448 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 20:51:48,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898748519] [2020-01-16 20:51:48,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:51:48,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:51:48,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1831040244] [2020-01-16 20:51:48,449 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:51:48,451 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:51:48,842 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 4374 states and 20413 transitions. [2020-01-16 20:51:48,842 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:51:48,853 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-01-16 20:51:48,853 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:51:48,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:51:48,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:51:48,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:51:48,854 INFO L87 Difference]: Start difference. First operand 3644 states and 16523 transitions. Second operand 3 states. [2020-01-16 20:51:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:51:48,865 INFO L93 Difference]: Finished difference Result 2550 states and 11419 transitions. [2020-01-16 20:51:48,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:51:48,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-01-16 20:51:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:51:48,866 INFO L225 Difference]: With dead ends: 2550 [2020-01-16 20:51:48,866 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 20:51:48,866 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 [2020-01-16 20:51:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 20:51:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 20:51:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 20:51:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 20:51:48,867 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-01-16 20:51:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:51:48,867 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 20:51:48,867 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:51:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 20:51:48,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 20:51:48,873 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 08:51:48 BasicIcfg [2020-01-16 20:51:48,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 20:51:48,875 INFO L168 Benchmark]: Toolchain (without parser) took 63770.35 ms. Allocated memory was 145.2 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 120.3 MB in the beginning and 354.3 MB in the end (delta: -234.0 MB). Peak memory consumption was 985.5 MB. Max. memory is 7.1 GB. [2020-01-16 20:51:48,876 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-01-16 20:51:48,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.61 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 118.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 20:51:48,878 INFO L168 Benchmark]: Boogie Preprocessor took 24.55 ms. Allocated memory is still 145.2 MB. Free memory was 118.4 MB in the beginning and 117.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 20:51:48,880 INFO L168 Benchmark]: RCFGBuilder took 334.64 ms. Allocated memory is still 145.2 MB. Free memory was 117.3 MB in the beginning and 104.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-01-16 20:51:48,880 INFO L168 Benchmark]: TraceAbstraction took 63364.40 ms. Allocated memory was 145.2 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 104.4 MB in the beginning and 354.3 MB in the end (delta: -249.9 MB). Peak memory consumption was 969.6 MB. Max. memory is 7.1 GB. [2020-01-16 20:51:48,884 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 0.13 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.61 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 118.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.55 ms. Allocated memory is still 145.2 MB. Free memory was 118.4 MB in the beginning and 117.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.64 ms. Allocated memory is still 145.2 MB. Free memory was 117.3 MB in the beginning and 104.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 63364.40 ms. Allocated memory was 145.2 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 104.4 MB in the beginning and 354.3 MB in the end (delta: -249.9 MB). Peak memory consumption was 969.6 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: 63.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 41.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 1655 SDtfs, 2375 SDslu, 81561 SDs, 0 SdLazy, 23117 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 594 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31692 ImplicationChecksByTransitivity, 28.1s 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: 3.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s 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...