/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 01:54:29,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 01:54:29,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 01:54:29,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 01:54:29,648 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-Separate.epf [2021-05-22 01:54:29,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 01:54:29,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 01:54:29,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 01:54:29,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 01:54:29,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 01:54:29,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 01:54:29,685 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 01:54:29,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 01:54:29,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 01:54:29,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 01:54:29,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 01:54:29,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 01:54:29,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 01:54:29,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 01:54:29,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 01:54:29,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 01:54:29,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 01:54:29,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 01:54:29,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 01:54:29,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 01:54:29,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 01:54:29,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 01:54:29,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 01:54:29,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:54:29,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 01:54:29,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 01:54:29,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 01:54:29,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 01:54:29,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 01:54:29,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 01:54:29,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 01:54:29,690 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 01:54:29,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 01:54:29,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 01:54:30,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 01:54:30,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 01:54:30,013 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-22 01:54:30,015 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-22 01:54:30,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl [2021-05-22 01:54:30,016 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl' [2021-05-22 01:54:30,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 01:54:30,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-22 01:54:30,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 01:54:30,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 01:54:30,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 01:54:30,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 01:54:30,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 01:54:30,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 01:54:30,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 01:54:30,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... [2021-05-22 01:54:30,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 01:54:30,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 01:54:30,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 01:54:30,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 01:54:30,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:54:30,153 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-05-22 01:54:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-05-22 01:54:30,154 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-05-22 01:54:30,154 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-05-22 01:54:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-05-22 01:54:30,154 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-05-22 01:54:30,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-05-22 01:54:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-05-22 01:54:30,155 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-05-22 01:54:30,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-22 01:54:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 01:54:30,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 01:54:30,157 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 01:54:30,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 01:54:30,284 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-22 01:54:30,287 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:54:30 BoogieIcfgContainer [2021-05-22 01:54:30,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 01:54:30,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 01:54:30,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 01:54:30,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 01:54:30,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:54:30" (1/2) ... [2021-05-22 01:54:30,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10019631 and model type example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:54:30, skipping insertion in model container [2021-05-22 01:54:30,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:54:30" (2/2) ... [2021-05-22 01:54:30,301 INFO L111 eAbstractionObserver]: Analyzing ICFG example_3.bpl [2021-05-22 01:54:30,310 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 01:54:30,311 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 01:54:30,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 01:54:30,312 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 01:54:30,346 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-05-22 01:54:30,364 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:54:30,381 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:54:30,381 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:54:30,381 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:54:30,381 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:54:30,382 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:54:30,382 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:54:30,382 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:54:30,382 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:54:30,390 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 90 flow [2021-05-22 01:54:30,404 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-22 01:54:30,413 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:54:30,413 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:54:30,414 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:54:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:54:30,418 INFO L82 PathProgramCache]: Analyzing trace with hash -921991571, now seen corresponding path program 1 times [2021-05-22 01:54:30,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:54:30,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379879759] [2021-05-22 01:54:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:54:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:54:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:54:30,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:54:30,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379879759] [2021-05-22 01:54:30,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379879759] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:54:30,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:54:30,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:54:30,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505809047] [2021-05-22 01:54:30,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:54:30,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:54:30,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:54:30,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:54:30,563 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:54:30,580 INFO L93 Difference]: Finished difference Result 65 states and 135 transitions. [2021-05-22 01:54:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:54:30,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-05-22 01:54:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:54:30,601 INFO L225 Difference]: With dead ends: 65 [2021-05-22 01:54:30,601 INFO L226 Difference]: Without dead ends: 63 [2021-05-22 01:54:30,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:54:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-22 01:54:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-05-22 01:54:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.1451612903225805) internal successors, (133), 62 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 133 transitions. [2021-05-22 01:54:30,648 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 133 transitions. Word has length 13 [2021-05-22 01:54:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:54:30,648 INFO L482 AbstractCegarLoop]: Abstraction has 63 states and 133 transitions. [2021-05-22 01:54:30,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 133 transitions. [2021-05-22 01:54:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-22 01:54:30,665 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:54:30,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:54:30,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 01:54:30,666 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:54:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:54:30,667 INFO L82 PathProgramCache]: Analyzing trace with hash -922453781, now seen corresponding path program 1 times [2021-05-22 01:54:30,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:54:30,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800529893] [2021-05-22 01:54:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:54:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:54:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:54:30,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:54:30,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800529893] [2021-05-22 01:54:30,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800529893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:54:30,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:54:30,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-22 01:54:30,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461592216] [2021-05-22 01:54:30,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 01:54:30,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:54:30,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 01:54:30,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:54:30,812 INFO L87 Difference]: Start difference. First operand 63 states and 133 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:30,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:54:30,877 INFO L93 Difference]: Finished difference Result 108 states and 215 transitions. [2021-05-22 01:54:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 01:54:30,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-05-22 01:54:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:54:30,883 INFO L225 Difference]: With dead ends: 108 [2021-05-22 01:54:30,883 INFO L226 Difference]: Without dead ends: 83 [2021-05-22 01:54:30,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-22 01:54:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-22 01:54:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 63. [2021-05-22 01:54:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.096774193548387) internal successors, (130), 62 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 130 transitions. [2021-05-22 01:54:30,897 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 130 transitions. Word has length 13 [2021-05-22 01:54:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:54:30,897 INFO L482 AbstractCegarLoop]: Abstraction has 63 states and 130 transitions. [2021-05-22 01:54:30,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 130 transitions. [2021-05-22 01:54:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-22 01:54:30,898 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:54:30,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:54:30,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 01:54:30,898 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:54:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:54:30,899 INFO L82 PathProgramCache]: Analyzing trace with hash 674715691, now seen corresponding path program 2 times [2021-05-22 01:54:30,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:54:30,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811928353] [2021-05-22 01:54:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:54:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:54:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:54:31,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:54:31,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811928353] [2021-05-22 01:54:31,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811928353] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:54:31,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:54:31,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-22 01:54:31,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359593027] [2021-05-22 01:54:31,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 01:54:31,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:54:31,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 01:54:31,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:54:31,030 INFO L87 Difference]: Start difference. First operand 63 states and 130 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:54:31,092 INFO L93 Difference]: Finished difference Result 115 states and 228 transitions. [2021-05-22 01:54:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 01:54:31,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-05-22 01:54:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:54:31,093 INFO L225 Difference]: With dead ends: 115 [2021-05-22 01:54:31,093 INFO L226 Difference]: Without dead ends: 76 [2021-05-22 01:54:31,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-22 01:54:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-22 01:54:31,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2021-05-22 01:54:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 55 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2021-05-22 01:54:31,100 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 13 [2021-05-22 01:54:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:54:31,101 INFO L482 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2021-05-22 01:54:31,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2021-05-22 01:54:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-22 01:54:31,102 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:54:31,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:54:31,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 01:54:31,102 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:54:31,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:54:31,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1447175339, now seen corresponding path program 3 times [2021-05-22 01:54:31,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:54:31,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428200814] [2021-05-22 01:54:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:54:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:54:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:54:31,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:54:31,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428200814] [2021-05-22 01:54:31,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428200814] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:54:31,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:54:31,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-22 01:54:31,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966444213] [2021-05-22 01:54:31,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 01:54:31,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:54:31,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 01:54:31,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:54:31,189 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:54:31,232 INFO L93 Difference]: Finished difference Result 95 states and 183 transitions. [2021-05-22 01:54:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 01:54:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-05-22 01:54:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:54:31,236 INFO L225 Difference]: With dead ends: 95 [2021-05-22 01:54:31,236 INFO L226 Difference]: Without dead ends: 70 [2021-05-22 01:54:31,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-22 01:54:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-22 01:54:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2021-05-22 01:54:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 99 transitions. [2021-05-22 01:54:31,252 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 99 transitions. Word has length 13 [2021-05-22 01:54:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:54:31,253 INFO L482 AbstractCegarLoop]: Abstraction has 50 states and 99 transitions. [2021-05-22 01:54:31,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 99 transitions. [2021-05-22 01:54:31,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-22 01:54:31,253 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:54:31,253 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:54:31,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 01:54:31,254 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:54:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:54:31,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1989043105, now seen corresponding path program 4 times [2021-05-22 01:54:31,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:54:31,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117965316] [2021-05-22 01:54:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:54:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:54:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:54:31,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:54:31,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117965316] [2021-05-22 01:54:31,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117965316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:54:31,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:54:31,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-22 01:54:31,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172265203] [2021-05-22 01:54:31,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 01:54:31,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:54:31,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 01:54:31,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:54:31,355 INFO L87 Difference]: Start difference. First operand 50 states and 99 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:54:31,386 INFO L93 Difference]: Finished difference Result 75 states and 146 transitions. [2021-05-22 01:54:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 01:54:31,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-05-22 01:54:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:54:31,387 INFO L225 Difference]: With dead ends: 75 [2021-05-22 01:54:31,388 INFO L226 Difference]: Without dead ends: 48 [2021-05-22 01:54:31,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-22 01:54:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-22 01:54:31,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-22 01:54:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.021276595744681) internal successors, (95), 47 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 95 transitions. [2021-05-22 01:54:31,392 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 95 transitions. Word has length 13 [2021-05-22 01:54:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:54:31,392 INFO L482 AbstractCegarLoop]: Abstraction has 48 states and 95 transitions. [2021-05-22 01:54:31,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 95 transitions. [2021-05-22 01:54:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-22 01:54:31,393 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:54:31,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:54:31,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 01:54:31,393 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:54:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:54:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash 828020991, now seen corresponding path program 5 times [2021-05-22 01:54:31,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:54:31,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001716929] [2021-05-22 01:54:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:54:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:54:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:54:31,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:54:31,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001716929] [2021-05-22 01:54:31,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001716929] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:54:31,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:54:31,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-22 01:54:31,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353751822] [2021-05-22 01:54:31,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 01:54:31,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:54:31,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 01:54:31,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:54:31,479 INFO L87 Difference]: Start difference. First operand 48 states and 95 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:54:31,501 INFO L93 Difference]: Finished difference Result 67 states and 129 transitions. [2021-05-22 01:54:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 01:54:31,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-05-22 01:54:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:54:31,503 INFO L225 Difference]: With dead ends: 67 [2021-05-22 01:54:31,503 INFO L226 Difference]: Without dead ends: 42 [2021-05-22 01:54:31,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-22 01:54:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-22 01:54:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-22 01:54:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 41 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 79 transitions. [2021-05-22 01:54:31,512 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 79 transitions. Word has length 13 [2021-05-22 01:54:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:54:31,515 INFO L482 AbstractCegarLoop]: Abstraction has 42 states and 79 transitions. [2021-05-22 01:54:31,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 79 transitions. [2021-05-22 01:54:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-22 01:54:31,521 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:54:31,521 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:54:31,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 01:54:31,521 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:54:31,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:54:31,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1122234655, now seen corresponding path program 6 times [2021-05-22 01:54:31,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:54:31,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897629684] [2021-05-22 01:54:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:54:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:54:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:54:31,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:54:31,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897629684] [2021-05-22 01:54:31,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897629684] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:54:31,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:54:31,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-22 01:54:31,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132569785] [2021-05-22 01:54:31,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-22 01:54:31,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:54:31,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-22 01:54:31,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-22 01:54:31,635 INFO L87 Difference]: Start difference. First operand 42 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:54:31,652 INFO L93 Difference]: Finished difference Result 41 states and 78 transitions. [2021-05-22 01:54:31,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-22 01:54:31,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-05-22 01:54:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:54:31,652 INFO L225 Difference]: With dead ends: 41 [2021-05-22 01:54:31,652 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 01:54:31,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-22 01:54:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 01:54:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 01:54:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 01:54:31,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-05-22 01:54:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:54:31,653 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 01:54:31,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 01:54:31,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 01:54:31,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-22 01:54:31,654 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 01:54:31,656 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-22 01:54:31,657 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:54:31,657 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:54:31,657 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:54:31,657 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:54:31,657 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:54:31,657 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:54:31,657 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:54:31,657 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 01:54:31,658 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 90 flow [2021-05-22 01:54:31,661 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:54:31,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 01:54:31,662 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-22 01:54:31,662 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 01:54:31,665 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 01:54:31 BasicIcfg [2021-05-22 01:54:31,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 01:54:31,666 INFO L168 Benchmark]: Toolchain (without parser) took 1629.36 ms. Allocated memory is still 362.8 MB. Free memory was 342.0 MB in the beginning and 338.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 959.4 kB. Max. memory is 16.0 GB. [2021-05-22 01:54:31,666 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory is still 343.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:54:31,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.18 ms. Allocated memory is still 362.8 MB. Free memory was 342.0 MB in the beginning and 340.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:54:31,666 INFO L168 Benchmark]: Boogie Preprocessor took 12.73 ms. Allocated memory is still 362.8 MB. Free memory was 340.5 MB in the beginning and 339.6 MB in the end (delta: 947.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 01:54:31,667 INFO L168 Benchmark]: RCFGBuilder took 211.49 ms. Allocated memory is still 362.8 MB. Free memory was 339.6 MB in the beginning and 330.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-05-22 01:54:31,667 INFO L168 Benchmark]: TraceAbstraction took 1374.12 ms. Allocated memory is still 362.8 MB. Free memory was 330.2 MB in the beginning and 338.3 MB in the end (delta: -8.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:54:31,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory is still 343.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.18 ms. Allocated memory is still 362.8 MB. Free memory was 342.0 MB in the beginning and 340.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.73 ms. Allocated memory is still 362.8 MB. Free memory was 340.5 MB in the beginning and 339.6 MB in the end (delta: 947.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 211.49 ms. Allocated memory is still 362.8 MB. Free memory was 339.6 MB in the beginning and 330.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1374.12 ms. Allocated memory is still 362.8 MB. Free memory was 330.2 MB in the beginning and 338.3 MB in the end (delta: -8.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1275.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 33.0ms, AutomataDifference: 323.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 185 SDtfs, 189 SDslu, 221 SDs, 0 SdLazy, 47 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 342.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.2ms AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.4ms SsaConstructionTime, 36.5ms SatisfiabilityAnalysisTime, 624.9ms InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 838 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...