/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 16:03:33,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 16:03:33,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 16:03:33,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 16:03:33,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 16:03:33,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 16:03:33,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 16:03:33,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 16:03:33,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 16:03:33,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 16:03:33,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 16:03:33,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 16:03:33,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 16:03:33,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 16:03:33,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 16:03:33,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 16:03:33,490 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 16:03:33,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 16:03:33,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 16:03:33,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 16:03:33,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 16:03:33,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 16:03:33,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 16:03:33,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 16:03:33,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 16:03:33,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 16:03:33,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 16:03:33,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 16:03:33,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 16:03:33,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 16:03:33,493 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 16:03:33,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 16:03:33,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 16:03:33,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 16:03:33,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 16:03:33,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 16:03:33,670 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 16:03:33,671 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 16:03:33,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl [2022-03-15 16:03:33,672 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl' [2022-03-15 16:03:33,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 16:03:33,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 16:03:33,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 16:03:33,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 16:03:33,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 16:03:33,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,734 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 16:03:33,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 16:03:33,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 16:03:33,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 16:03:33,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 16:03:33,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 16:03:33,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 16:03:33,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 16:03:33,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 16:03:33,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/1) ... [2022-03-15 16:03:33,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 16:03:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:03:33,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 16:03:33,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 16:03:33,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 16:03:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 16:03:33,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 16:03:33,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 16:03:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 16:03:33,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 16:03:33,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 16:03:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 16:03:33,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 16:03:33,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 16:03:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 16:03:33,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 16:03:33,814 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 16:03:33,845 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 16:03:33,846 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 16:03:33,911 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 16:03:33,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 16:03:33,916 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 16:03:33,917 INFO L202 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 04:03:33 BoogieIcfgContainer [2022-03-15 16:03:33,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 16:03:33,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 16:03:33,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 16:03:33,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 16:03:33,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:03:33" (1/2) ... [2022-03-15 16:03:33,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40babe36 and model type misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 04:03:33, skipping insertion in model container [2022-03-15 16:03:33,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 04:03:33" (2/2) ... [2022-03-15 16:03:33,940 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-4.wvr.bpl [2022-03-15 16:03:33,943 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 16:03:33,944 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 16:03:33,944 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 16:03:33,944 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 16:03:33,985 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 16:03:34,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 16:03:34,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 16:03:34,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 16:03:34,087 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 31 transitions, 86 flow [2022-03-15 16:03:34,161 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 231 states, 230 states have (on average 2.9478260869565216) internal successors, (678), 230 states have internal predecessors, (678), 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) [2022-03-15 16:03:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 230 states have (on average 2.9478260869565216) internal successors, (678), 230 states have internal predecessors, (678), 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) [2022-03-15 16:03:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 16:03:34,183 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:34,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:34,184 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1616720246, now seen corresponding path program 1 times [2022-03-15 16:03:34,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:34,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448996006] [2022-03-15 16:03:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:34,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:34,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:34,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448996006] [2022-03-15 16:03:34,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448996006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:03:34,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:03:34,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 16:03:34,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781915402] [2022-03-15 16:03:34,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:03:34,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 16:03:34,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:34,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 16:03:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 16:03:34,365 INFO L87 Difference]: Start difference. First operand has 231 states, 230 states have (on average 2.9478260869565216) internal successors, (678), 230 states have internal predecessors, (678), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2022-03-15 16:03:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:34,397 INFO L93 Difference]: Finished difference Result 273 states and 758 transitions. [2022-03-15 16:03:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 16:03:34,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-03-15 16:03:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:34,405 INFO L225 Difference]: With dead ends: 273 [2022-03-15 16:03:34,405 INFO L226 Difference]: Without dead ends: 173 [2022-03-15 16:03:34,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 16:03:34,409 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:34,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 35 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-03-15 16:03:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-03-15 16:03:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.7209302325581395) internal successors, (468), 172 states have internal predecessors, (468), 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) [2022-03-15 16:03:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 468 transitions. [2022-03-15 16:03:34,485 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 468 transitions. Word has length 14 [2022-03-15 16:03:34,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:34,485 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 468 transitions. [2022-03-15 16:03:34,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2022-03-15 16:03:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 468 transitions. [2022-03-15 16:03:34,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 16:03:34,487 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:34,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:34,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 16:03:34,487 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:34,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:34,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1897997752, now seen corresponding path program 2 times [2022-03-15 16:03:34,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:34,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747578989] [2022-03-15 16:03:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:34,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:34,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747578989] [2022-03-15 16:03:34,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747578989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:03:34,513 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:03:34,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 16:03:34,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013294122] [2022-03-15 16:03:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:03:34,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 16:03:34,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 16:03:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 16:03:34,515 INFO L87 Difference]: Start difference. First operand 173 states and 468 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-03-15 16:03:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:34,562 INFO L93 Difference]: Finished difference Result 310 states and 842 transitions. [2022-03-15 16:03:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 16:03:34,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2022-03-15 16:03:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:34,564 INFO L225 Difference]: With dead ends: 310 [2022-03-15 16:03:34,564 INFO L226 Difference]: Without dead ends: 228 [2022-03-15 16:03:34,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 16:03:34,565 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:34,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 39 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-03-15 16:03:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-03-15 16:03:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.748898678414097) internal successors, (624), 227 states have internal predecessors, (624), 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) [2022-03-15 16:03:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 624 transitions. [2022-03-15 16:03:34,585 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 624 transitions. Word has length 14 [2022-03-15 16:03:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:34,585 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 624 transitions. [2022-03-15 16:03:34,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-03-15 16:03:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 624 transitions. [2022-03-15 16:03:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 16:03:34,587 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:34,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:34,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 16:03:34,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash -666097446, now seen corresponding path program 1 times [2022-03-15 16:03:34,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:34,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261390177] [2022-03-15 16:03:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:34,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:34,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:34,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261390177] [2022-03-15 16:03:34,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261390177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:03:34,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:03:34,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 16:03:34,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139624289] [2022-03-15 16:03:34,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:03:34,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 16:03:34,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:34,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 16:03:34,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 16:03:34,606 INFO L87 Difference]: Start difference. First operand 228 states and 624 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-03-15 16:03:34,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:34,624 INFO L93 Difference]: Finished difference Result 369 states and 981 transitions. [2022-03-15 16:03:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 16:03:34,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-03-15 16:03:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:34,627 INFO L225 Difference]: With dead ends: 369 [2022-03-15 16:03:34,627 INFO L226 Difference]: Without dead ends: 369 [2022-03-15 16:03:34,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 16:03:34,628 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:34,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-15 16:03:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 284. [2022-03-15 16:03:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.7597173144876326) internal successors, (781), 283 states have internal predecessors, (781), 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) [2022-03-15 16:03:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 781 transitions. [2022-03-15 16:03:34,642 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 781 transitions. Word has length 18 [2022-03-15 16:03:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:34,642 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 781 transitions. [2022-03-15 16:03:34,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-03-15 16:03:34,643 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 781 transitions. [2022-03-15 16:03:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 16:03:34,644 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:34,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:34,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 16:03:34,645 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:34,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1626508092, now seen corresponding path program 1 times [2022-03-15 16:03:34,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:34,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916184484] [2022-03-15 16:03:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:34,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:34,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:34,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916184484] [2022-03-15 16:03:34,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916184484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:03:34,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:03:34,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 16:03:34,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358550850] [2022-03-15 16:03:34,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:03:34,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 16:03:34,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 16:03:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 16:03:34,675 INFO L87 Difference]: Start difference. First operand 284 states and 781 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-03-15 16:03:34,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:34,691 INFO L93 Difference]: Finished difference Result 432 states and 1157 transitions. [2022-03-15 16:03:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 16:03:34,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-03-15 16:03:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:34,694 INFO L225 Difference]: With dead ends: 432 [2022-03-15 16:03:34,695 INFO L226 Difference]: Without dead ends: 432 [2022-03-15 16:03:34,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 16:03:34,696 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:34,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 35 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-03-15 16:03:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 348. [2022-03-15 16:03:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 2.7636887608069163) internal successors, (959), 347 states have internal predecessors, (959), 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) [2022-03-15 16:03:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 959 transitions. [2022-03-15 16:03:34,719 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 959 transitions. Word has length 18 [2022-03-15 16:03:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:34,720 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 959 transitions. [2022-03-15 16:03:34,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-03-15 16:03:34,720 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 959 transitions. [2022-03-15 16:03:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 16:03:34,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:34,725 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:34,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 16:03:34,725 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 176081054, now seen corresponding path program 1 times [2022-03-15 16:03:34,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:34,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898140883] [2022-03-15 16:03:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:34,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:34,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:34,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898140883] [2022-03-15 16:03:34,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898140883] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:03:34,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721334326] [2022-03-15 16:03:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:34,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:03:34,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:03:34,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 16:03:34,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 16:03:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:34,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 16:03:34,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:03:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:34,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:03:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:34,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721334326] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:03:34,944 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:03:34,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-03-15 16:03:34,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725752349] [2022-03-15 16:03:34,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:03:34,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 16:03:34,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 16:03:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 16:03:34,945 INFO L87 Difference]: Start difference. First operand 348 states and 959 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-03-15 16:03:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:34,992 INFO L93 Difference]: Finished difference Result 665 states and 1852 transitions. [2022-03-15 16:03:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 16:03:34,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2022-03-15 16:03:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:34,994 INFO L225 Difference]: With dead ends: 665 [2022-03-15 16:03:34,994 INFO L226 Difference]: Without dead ends: 509 [2022-03-15 16:03:34,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:03:34,995 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 43 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:34,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 50 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-03-15 16:03:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 408. [2022-03-15 16:03:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 2.7764127764127764) internal successors, (1130), 407 states have internal predecessors, (1130), 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) [2022-03-15 16:03:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1130 transitions. [2022-03-15 16:03:35,008 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1130 transitions. Word has length 22 [2022-03-15 16:03:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:35,008 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1130 transitions. [2022-03-15 16:03:35,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-03-15 16:03:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1130 transitions. [2022-03-15 16:03:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 16:03:35,009 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:35,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:35,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 16:03:35,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:03:35,230 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1687278304, now seen corresponding path program 1 times [2022-03-15 16:03:35,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:35,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049918677] [2022-03-15 16:03:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:35,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:35,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:35,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049918677] [2022-03-15 16:03:35,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049918677] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:03:35,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887552375] [2022-03-15 16:03:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:35,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:03:35,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:03:35,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 16:03:35,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 16:03:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:35,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 16:03:35,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:03:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:35,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:03:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:35,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887552375] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:03:35,427 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:03:35,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-03-15 16:03:35,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058079637] [2022-03-15 16:03:35,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:03:35,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 16:03:35,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 16:03:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 16:03:35,428 INFO L87 Difference]: Start difference. First operand 408 states and 1130 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-03-15 16:03:35,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:35,485 INFO L93 Difference]: Finished difference Result 873 states and 2457 transitions. [2022-03-15 16:03:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 16:03:35,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2022-03-15 16:03:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:35,489 INFO L225 Difference]: With dead ends: 873 [2022-03-15 16:03:35,489 INFO L226 Difference]: Without dead ends: 717 [2022-03-15 16:03:35,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:03:35,492 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:35,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 57 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-03-15 16:03:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 697. [2022-03-15 16:03:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 2.8117816091954024) internal successors, (1957), 696 states have internal predecessors, (1957), 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) [2022-03-15 16:03:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1957 transitions. [2022-03-15 16:03:35,509 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1957 transitions. Word has length 22 [2022-03-15 16:03:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:35,509 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 1957 transitions. [2022-03-15 16:03:35,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-03-15 16:03:35,509 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1957 transitions. [2022-03-15 16:03:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 16:03:35,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:35,511 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:35,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-15 16:03:35,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-03-15 16:03:35,727 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1070606370, now seen corresponding path program 2 times [2022-03-15 16:03:35,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:35,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002218876] [2022-03-15 16:03:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 16:03:35,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:35,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002218876] [2022-03-15 16:03:35,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002218876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:03:35,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:03:35,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 16:03:35,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802533823] [2022-03-15 16:03:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:03:35,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 16:03:35,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:35,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 16:03:35,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 16:03:35,762 INFO L87 Difference]: Start difference. First operand 697 states and 1957 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-03-15 16:03:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:35,788 INFO L93 Difference]: Finished difference Result 873 states and 2302 transitions. [2022-03-15 16:03:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 16:03:35,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 26 [2022-03-15 16:03:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:35,793 INFO L225 Difference]: With dead ends: 873 [2022-03-15 16:03:35,793 INFO L226 Difference]: Without dead ends: 873 [2022-03-15 16:03:35,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 16:03:35,794 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 40 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:35,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 61 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-03-15 16:03:35,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 671. [2022-03-15 16:03:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 2.662686567164179) internal successors, (1784), 670 states have internal predecessors, (1784), 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) [2022-03-15 16:03:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1784 transitions. [2022-03-15 16:03:35,812 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1784 transitions. Word has length 26 [2022-03-15 16:03:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:35,812 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 1784 transitions. [2022-03-15 16:03:35,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-03-15 16:03:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1784 transitions. [2022-03-15 16:03:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 16:03:35,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:35,815 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:35,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 16:03:35,815 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1535613852, now seen corresponding path program 2 times [2022-03-15 16:03:35,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:35,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772982776] [2022-03-15 16:03:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:35,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 16:03:35,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:35,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772982776] [2022-03-15 16:03:35,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772982776] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:03:35,854 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:03:35,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 16:03:35,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589222022] [2022-03-15 16:03:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:03:35,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 16:03:35,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 16:03:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 16:03:35,856 INFO L87 Difference]: Start difference. First operand 671 states and 1784 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-03-15 16:03:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:35,883 INFO L93 Difference]: Finished difference Result 803 states and 1991 transitions. [2022-03-15 16:03:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 16:03:35,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 26 [2022-03-15 16:03:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:35,888 INFO L225 Difference]: With dead ends: 803 [2022-03-15 16:03:35,888 INFO L226 Difference]: Without dead ends: 803 [2022-03-15 16:03:35,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 16:03:35,888 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 39 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:35,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 61 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-03-15 16:03:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 679. [2022-03-15 16:03:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 2.5250737463126844) internal successors, (1712), 678 states have internal predecessors, (1712), 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) [2022-03-15 16:03:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1712 transitions. [2022-03-15 16:03:35,902 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1712 transitions. Word has length 26 [2022-03-15 16:03:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:35,903 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 1712 transitions. [2022-03-15 16:03:35,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-03-15 16:03:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1712 transitions. [2022-03-15 16:03:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 16:03:35,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:35,904 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:35,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 16:03:35,904 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash -71530008, now seen corresponding path program 1 times [2022-03-15 16:03:35,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:35,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578691980] [2022-03-15 16:03:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:35,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:35,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:35,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578691980] [2022-03-15 16:03:35,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578691980] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:03:35,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912843741] [2022-03-15 16:03:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:35,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:03:35,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:03:35,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 16:03:35,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 16:03:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:35,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 16:03:35,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:03:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:36,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:03:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:36,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912843741] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:03:36,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:03:36,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-03-15 16:03:36,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573957907] [2022-03-15 16:03:36,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:03:36,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 16:03:36,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:36,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 16:03:36,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-15 16:03:36,077 INFO L87 Difference]: Start difference. First operand 679 states and 1712 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-03-15 16:03:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:36,137 INFO L93 Difference]: Finished difference Result 1111 states and 2808 transitions. [2022-03-15 16:03:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 16:03:36,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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 30 [2022-03-15 16:03:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:36,141 INFO L225 Difference]: With dead ends: 1111 [2022-03-15 16:03:36,141 INFO L226 Difference]: Without dead ends: 935 [2022-03-15 16:03:36,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-15 16:03:36,143 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:36,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 65 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2022-03-15 16:03:36,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 478. [2022-03-15 16:03:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 2.542976939203354) internal successors, (1213), 477 states have internal predecessors, (1213), 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) [2022-03-15 16:03:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1213 transitions. [2022-03-15 16:03:36,154 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1213 transitions. Word has length 30 [2022-03-15 16:03:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:36,154 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1213 transitions. [2022-03-15 16:03:36,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-03-15 16:03:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1213 transitions. [2022-03-15 16:03:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 16:03:36,156 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:03:36,156 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:03:36,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 16:03:36,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:03:36,369 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:03:36,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:03:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1538147992, now seen corresponding path program 2 times [2022-03-15 16:03:36,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:03:36,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451030833] [2022-03-15 16:03:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:03:36,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:03:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:03:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:36,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:03:36,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451030833] [2022-03-15 16:03:36,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451030833] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:03:36,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137746078] [2022-03-15 16:03:36,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:03:36,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:03:36,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:03:36,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 16:03:36,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 16:03:36,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:03:36,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:03:36,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 16:03:36,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:03:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:36,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:03:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:03:36,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137746078] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:03:36,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:03:36,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-03-15 16:03:36,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421766966] [2022-03-15 16:03:36,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:03:36,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 16:03:36,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:03:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 16:03:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:03:36,581 INFO L87 Difference]: Start difference. First operand 478 states and 1213 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 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) [2022-03-15 16:03:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:03:36,627 INFO L93 Difference]: Finished difference Result 458 states and 1138 transitions. [2022-03-15 16:03:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 16:03:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 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 30 [2022-03-15 16:03:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:03:36,628 INFO L225 Difference]: With dead ends: 458 [2022-03-15 16:03:36,628 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 16:03:36,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-03-15 16:03:36,628 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:03:36,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 36 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:03:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 16:03:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 16:03:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:03:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 16:03:36,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-03-15 16:03:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:03:36,629 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 16:03:36,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 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) [2022-03-15 16:03:36,630 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 16:03:36,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 16:03:36,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-15 16:03:36,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 16:03:36,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 16:03:36,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 16:03:36,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 16:03:36,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:03:36,855 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1] [2022-03-15 16:03:36,856 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 16:03:36,856 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 16:03:36,858 INFO L202 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 04:03:36 BasicIcfg [2022-03-15 16:03:36,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 16:03:36,859 INFO L158 Benchmark]: Toolchain (without parser) took 3143.74ms. Allocated memory was 234.9MB in the beginning and 302.0MB in the end (delta: 67.1MB). Free memory was 196.7MB in the beginning and 255.2MB in the end (delta: -58.5MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2022-03-15 16:03:36,859 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 234.9MB. Free memory is still 197.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 16:03:36,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.00ms. Allocated memory is still 234.9MB. Free memory was 196.6MB in the beginning and 195.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 16:03:36,860 INFO L158 Benchmark]: Boogie Preprocessor took 13.22ms. Allocated memory is still 234.9MB. Free memory was 195.1MB in the beginning and 194.2MB in the end (delta: 904.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 16:03:36,860 INFO L158 Benchmark]: RCFGBuilder took 167.10ms. Allocated memory is still 234.9MB. Free memory was 194.1MB in the beginning and 185.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 16:03:36,860 INFO L158 Benchmark]: TraceAbstraction took 2940.51ms. Allocated memory was 234.9MB in the beginning and 302.0MB in the end (delta: 67.1MB). Free memory was 184.8MB in the beginning and 255.2MB in the end (delta: -70.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 16:03:36,861 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 0.12ms. Allocated memory is still 234.9MB. Free memory is still 197.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.00ms. Allocated memory is still 234.9MB. Free memory was 196.6MB in the beginning and 195.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.22ms. Allocated memory is still 234.9MB. Free memory was 195.1MB in the beginning and 194.2MB in the end (delta: 904.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 167.10ms. Allocated memory is still 234.9MB. Free memory was 194.1MB in the beginning and 185.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2940.51ms. Allocated memory was 234.9MB in the beginning and 302.0MB in the end (delta: 67.1MB). Free memory was 184.8MB in the beginning and 255.2MB in the end (delta: -70.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 62]: 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, 48 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 338 mSDsluCounter, 472 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 358 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 356 IncrementalHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 204 mSDtfsCounter, 356 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 253 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=697occurred in iteration=6, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 1073 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 800 SizeOfPredicates, 4 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 85/118 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 16:03:36,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...