/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/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 19:38:40,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 19:38:40,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 19:38:40,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 19:38:40,399 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 [2022-03-03 19:38:40,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 19:38:40,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 19:38:40,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 19:38:40,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 19:38:40,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 19:38:40,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 19:38:40,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 19:38:40,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 19:38:40,432 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 19:38:40,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 19:38:40,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 19:38:40,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 19:38:40,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 19:38:40,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 19:38:40,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 19:38:40,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 19:38:40,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 19:38:40,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:38:40,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 19:38:40,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 19:38:40,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 19:38:40,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 19:38:40,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 19:38:40,435 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 19:38:40,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 19:38:40,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 19:38:40,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 19:38:40,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 19:38:40,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 19:38:40,699 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 19:38:40,700 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 19:38:40,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2022-03-03 19:38:40,701 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2022-03-03 19:38:40,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 19:38:40,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 19:38:40,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 19:38:40,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 19:38:40,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 19:38:40,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,745 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 19:38:40,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 19:38:40,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 19:38:40,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 19:38:40,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 19:38:40,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 19:38:40,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 19:38:40,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 19:38:40,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 19:38:40,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/1) ... [2022-03-03 19:38:40,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:38:40,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:40,797 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) [2022-03-03 19:38:40,816 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 [2022-03-03 19:38:40,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 19:38:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 19:38:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 19:38:40,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 19:38:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 19:38:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 19:38:40,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 19:38:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 19:38:40,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 19:38:40,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-03 19:38:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-03 19:38:40,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-03 19:38:40,837 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 19:38:40,881 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 19:38:40,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 19:38:41,015 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 19:38:41,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 19:38:41,036 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-03 19:38:41,038 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:38:41 BoogieIcfgContainer [2022-03-03 19:38:41,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 19:38:41,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 19:38:41,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 19:38:41,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 19:38:41,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:38:40" (1/2) ... [2022-03-03 19:38:41,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350c04b4 and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:38:41, skipping insertion in model container [2022-03-03 19:38:41,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:38:41" (2/2) ... [2022-03-03 19:38:41,044 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2022-03-03 19:38:41,048 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 19:38:41,048 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 19:38:41,049 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 19:38:41,049 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 19:38:41,080 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-03 19:38:41,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 19:38:41,165 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 [2022-03-03 19:38:41,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-03 19:38:41,191 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2022-03-03 19:38:41,267 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 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) [2022-03-03 19:38:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 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) [2022-03-03 19:38:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 19:38:41,286 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:41,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:41,288 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash -637092992, now seen corresponding path program 1 times [2022-03-03 19:38:41,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:41,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978521852] [2022-03-03 19:38:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:41,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:41,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978521852] [2022-03-03 19:38:41,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978521852] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:38:41,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:38:41,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:38:41,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46347009] [2022-03-03 19:38:41,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:38:41,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:38:41,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:38:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:38:41,486 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 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 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-03-03 19:38:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:41,546 INFO L93 Difference]: Finished difference Result 126 states and 331 transitions. [2022-03-03 19:38:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:38:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2022-03-03 19:38:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:41,558 INFO L225 Difference]: With dead ends: 126 [2022-03-03 19:38:41,558 INFO L226 Difference]: Without dead ends: 126 [2022-03-03 19:38:41,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:38:41,562 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:41,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:38:41,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-03-03 19:38:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-03-03 19:38:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.648) internal successors, (331), 125 states have internal predecessors, (331), 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) [2022-03-03 19:38:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 331 transitions. [2022-03-03 19:38:41,635 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 331 transitions. Word has length 21 [2022-03-03 19:38:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:41,635 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 331 transitions. [2022-03-03 19:38:41,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-03-03 19:38:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 331 transitions. [2022-03-03 19:38:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:38:41,637 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:41,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:41,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 19:38:41,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1418210977, now seen corresponding path program 1 times [2022-03-03 19:38:41,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:41,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103340622] [2022-03-03 19:38:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:41,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:41,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:41,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103340622] [2022-03-03 19:38:41,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103340622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:38:41,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:38:41,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:38:41,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777205772] [2022-03-03 19:38:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:38:41,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:38:41,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:41,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:38:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:38:41,708 INFO L87 Difference]: Start difference. First operand 126 states and 331 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-03-03 19:38:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:41,744 INFO L93 Difference]: Finished difference Result 176 states and 475 transitions. [2022-03-03 19:38:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:38:41,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2022-03-03 19:38:41,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:41,747 INFO L225 Difference]: With dead ends: 176 [2022-03-03 19:38:41,747 INFO L226 Difference]: Without dead ends: 176 [2022-03-03 19:38:41,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:38:41,748 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:41,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:38:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-03-03 19:38:41,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 151. [2022-03-03 19:38:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.6866666666666665) internal successors, (403), 150 states have internal predecessors, (403), 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) [2022-03-03 19:38:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 403 transitions. [2022-03-03 19:38:41,763 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 403 transitions. Word has length 24 [2022-03-03 19:38:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:41,764 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 403 transitions. [2022-03-03 19:38:41,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-03-03 19:38:41,764 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 403 transitions. [2022-03-03 19:38:41,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-03 19:38:41,765 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:41,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:41,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 19:38:41,766 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash 365469361, now seen corresponding path program 1 times [2022-03-03 19:38:41,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:41,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050002190] [2022-03-03 19:38:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:41,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:41,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050002190] [2022-03-03 19:38:41,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050002190] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:38:41,849 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:38:41,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:38:41,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924261825] [2022-03-03 19:38:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:38:41,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:38:41,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:38:41,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:38:41,853 INFO L87 Difference]: Start difference. First operand 151 states and 403 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-03-03 19:38:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:41,928 INFO L93 Difference]: Finished difference Result 223 states and 619 transitions. [2022-03-03 19:38:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:38:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 [2022-03-03 19:38:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:41,930 INFO L225 Difference]: With dead ends: 223 [2022-03-03 19:38:41,930 INFO L226 Difference]: Without dead ends: 223 [2022-03-03 19:38:41,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:38:41,932 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:41,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:38:41,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-03-03 19:38:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-03-03 19:38:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.7882882882882885) internal successors, (619), 222 states have internal predecessors, (619), 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) [2022-03-03 19:38:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 619 transitions. [2022-03-03 19:38:41,947 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 619 transitions. Word has length 26 [2022-03-03 19:38:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:41,947 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 619 transitions. [2022-03-03 19:38:41,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-03-03 19:38:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 619 transitions. [2022-03-03 19:38:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:38:41,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:41,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:41,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 19:38:41,950 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 282875335, now seen corresponding path program 1 times [2022-03-03 19:38:41,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:41,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544556450] [2022-03-03 19:38:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:38:42,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:42,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544556450] [2022-03-03 19:38:42,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544556450] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:38:42,019 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:38:42,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 19:38:42,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868223375] [2022-03-03 19:38:42,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:38:42,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:38:42,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:42,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:38:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:38:42,021 INFO L87 Difference]: Start difference. First operand 223 states and 619 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-03-03 19:38:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:42,076 INFO L93 Difference]: Finished difference Result 344 states and 930 transitions. [2022-03-03 19:38:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:38:42,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2022-03-03 19:38:42,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:42,080 INFO L225 Difference]: With dead ends: 344 [2022-03-03 19:38:42,080 INFO L226 Difference]: Without dead ends: 308 [2022-03-03 19:38:42,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:38:42,089 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:42,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:38:42,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-03 19:38:42,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235. [2022-03-03 19:38:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.8076923076923075) internal successors, (657), 234 states have internal predecessors, (657), 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) [2022-03-03 19:38:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 657 transitions. [2022-03-03 19:38:42,112 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 657 transitions. Word has length 28 [2022-03-03 19:38:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:42,113 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 657 transitions. [2022-03-03 19:38:42,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-03-03 19:38:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 657 transitions. [2022-03-03 19:38:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:38:42,115 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:42,115 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:42,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 19:38:42,116 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:42,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash 290186221, now seen corresponding path program 2 times [2022-03-03 19:38:42,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:42,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298237278] [2022-03-03 19:38:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:42,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:42,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298237278] [2022-03-03 19:38:42,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298237278] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:42,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101320852] [2022-03-03 19:38:42,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:38:42,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:42,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:42,231 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) [2022-03-03 19:38:42,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 19:38:42,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:38:42,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:42,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:38:42,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:42,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:43,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101320852] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:43,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:43,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2022-03-03 19:38:43,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806298622] [2022-03-03 19:38:43,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:43,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 19:38:43,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:43,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 19:38:43,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-03-03 19:38:43,036 INFO L87 Difference]: Start difference. First operand 235 states and 657 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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) [2022-03-03 19:38:43,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:43,811 INFO L93 Difference]: Finished difference Result 633 states and 1787 transitions. [2022-03-03 19:38:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 19:38:43,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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 [2022-03-03 19:38:43,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:43,816 INFO L225 Difference]: With dead ends: 633 [2022-03-03 19:38:43,816 INFO L226 Difference]: Without dead ends: 633 [2022-03-03 19:38:43,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:38:43,818 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 226 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:43,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 106 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:38:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-03 19:38:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 316. [2022-03-03 19:38:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.961904761904762) internal successors, (933), 315 states have internal predecessors, (933), 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) [2022-03-03 19:38:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 933 transitions. [2022-03-03 19:38:43,849 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 933 transitions. Word has length 30 [2022-03-03 19:38:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:43,849 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 933 transitions. [2022-03-03 19:38:43,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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) [2022-03-03 19:38:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 933 transitions. [2022-03-03 19:38:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:38:43,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:43,859 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:43,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:44,062 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 [2022-03-03 19:38:44,062 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 581986797, now seen corresponding path program 3 times [2022-03-03 19:38:44,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:44,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287952610] [2022-03-03 19:38:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:44,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:44,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:44,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287952610] [2022-03-03 19:38:44,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287952610] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:44,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820112603] [2022-03-03 19:38:44,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:38:44,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:44,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:44,186 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) [2022-03-03 19:38:44,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 19:38:44,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:38:44,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:44,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:38:44,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:44,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:44,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820112603] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:44,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:44,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-03-03 19:38:44,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268559552] [2022-03-03 19:38:44,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:44,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 19:38:44,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:44,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 19:38:44,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:38:44,796 INFO L87 Difference]: Start difference. First operand 316 states and 933 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 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) [2022-03-03 19:38:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:45,180 INFO L93 Difference]: Finished difference Result 861 states and 2534 transitions. [2022-03-03 19:38:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:38:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 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 [2022-03-03 19:38:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:45,186 INFO L225 Difference]: With dead ends: 861 [2022-03-03 19:38:45,186 INFO L226 Difference]: Without dead ends: 861 [2022-03-03 19:38:45,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=591, Unknown=0, NotChecked=0, Total=870 [2022-03-03 19:38:45,187 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 297 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:45,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 107 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:38:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-03-03 19:38:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 588. [2022-03-03 19:38:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.06984667802385) internal successors, (1802), 587 states have internal predecessors, (1802), 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) [2022-03-03 19:38:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1802 transitions. [2022-03-03 19:38:45,209 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1802 transitions. Word has length 30 [2022-03-03 19:38:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:45,209 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1802 transitions. [2022-03-03 19:38:45,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 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) [2022-03-03 19:38:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1802 transitions. [2022-03-03 19:38:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:38:45,211 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:45,212 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, 1, 1] [2022-03-03 19:38:45,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:45,427 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 [2022-03-03 19:38:45,428 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash -101147565, now seen corresponding path program 4 times [2022-03-03 19:38:45,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:45,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418872129] [2022-03-03 19:38:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:45,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:45,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:45,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418872129] [2022-03-03 19:38:45,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418872129] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:45,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437144923] [2022-03-03 19:38:45,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:38:45,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:45,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:45,540 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) [2022-03-03 19:38:45,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 19:38:45,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:38:45,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:45,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 19:38:45,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:45,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:46,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437144923] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:46,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:46,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 23 [2022-03-03 19:38:46,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598451963] [2022-03-03 19:38:46,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:46,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 19:38:46,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 19:38:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-03-03 19:38:46,172 INFO L87 Difference]: Start difference. First operand 588 states and 1802 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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) [2022-03-03 19:38:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:47,068 INFO L93 Difference]: Finished difference Result 975 states and 2760 transitions. [2022-03-03 19:38:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 19:38:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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 32 [2022-03-03 19:38:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:47,074 INFO L225 Difference]: With dead ends: 975 [2022-03-03 19:38:47,074 INFO L226 Difference]: Without dead ends: 975 [2022-03-03 19:38:47,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=581, Invalid=1581, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:38:47,075 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 242 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:47,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 184 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:38:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-03-03 19:38:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 710. [2022-03-03 19:38:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.011283497884344) internal successors, (2135), 709 states have internal predecessors, (2135), 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) [2022-03-03 19:38:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2135 transitions. [2022-03-03 19:38:47,102 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2135 transitions. Word has length 32 [2022-03-03 19:38:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:47,102 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2135 transitions. [2022-03-03 19:38:47,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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) [2022-03-03 19:38:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2135 transitions. [2022-03-03 19:38:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:38:47,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:47,105 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, 1, 1] [2022-03-03 19:38:47,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:47,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:47,327 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:47,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1192213421, now seen corresponding path program 5 times [2022-03-03 19:38:47,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:47,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720984310] [2022-03-03 19:38:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:47,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:47,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:47,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720984310] [2022-03-03 19:38:47,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720984310] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:47,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307732142] [2022-03-03 19:38:47,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:38:47,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:47,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:47,463 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) [2022-03-03 19:38:47,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 19:38:47,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 19:38:47,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:47,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 19:38:47,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:47,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:48,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307732142] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:48,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:48,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 25 [2022-03-03 19:38:48,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140793075] [2022-03-03 19:38:48,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:48,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 19:38:48,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 19:38:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-03-03 19:38:48,116 INFO L87 Difference]: Start difference. First operand 710 states and 2135 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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) [2022-03-03 19:38:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:50,060 INFO L93 Difference]: Finished difference Result 1943 states and 5560 transitions. [2022-03-03 19:38:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 19:38:50,060 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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 32 [2022-03-03 19:38:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:50,070 INFO L225 Difference]: With dead ends: 1943 [2022-03-03 19:38:50,071 INFO L226 Difference]: Without dead ends: 1943 [2022-03-03 19:38:50,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2574 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1583, Invalid=5557, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 19:38:50,074 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 278 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:50,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 329 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:38:50,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-03-03 19:38:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 826. [2022-03-03 19:38:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.0715151515151513) internal successors, (2534), 825 states have internal predecessors, (2534), 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) [2022-03-03 19:38:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2534 transitions. [2022-03-03 19:38:50,108 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2534 transitions. Word has length 32 [2022-03-03 19:38:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:50,109 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 2534 transitions. [2022-03-03 19:38:50,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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) [2022-03-03 19:38:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2534 transitions. [2022-03-03 19:38:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:38:50,111 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:50,111 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, 1, 1] [2022-03-03 19:38:50,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:50,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:50,333 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1582175149, now seen corresponding path program 6 times [2022-03-03 19:38:50,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:50,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087695768] [2022-03-03 19:38:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:50,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:50,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087695768] [2022-03-03 19:38:50,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087695768] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:50,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173921832] [2022-03-03 19:38:50,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:38:50,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:50,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:50,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:50,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 19:38:50,479 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 19:38:50,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:50,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 19:38:50,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:50,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:51,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173921832] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:51,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:51,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 26 [2022-03-03 19:38:51,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197221768] [2022-03-03 19:38:51,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:51,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 19:38:51,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:51,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 19:38:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-03-03 19:38:51,180 INFO L87 Difference]: Start difference. First operand 826 states and 2534 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 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) [2022-03-03 19:38:53,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:53,659 INFO L93 Difference]: Finished difference Result 2939 states and 8774 transitions. [2022-03-03 19:38:53,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 19:38:53,669 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 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 32 [2022-03-03 19:38:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:53,683 INFO L225 Difference]: With dead ends: 2939 [2022-03-03 19:38:53,683 INFO L226 Difference]: Without dead ends: 2939 [2022-03-03 19:38:53,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2652, Invalid=8060, Unknown=0, NotChecked=0, Total=10712 [2022-03-03 19:38:53,686 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 411 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:53,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 295 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:38:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-03-03 19:38:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1137. [2022-03-03 19:38:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 3.1778169014084505) internal successors, (3610), 1136 states have internal predecessors, (3610), 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) [2022-03-03 19:38:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 3610 transitions. [2022-03-03 19:38:53,735 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 3610 transitions. Word has length 32 [2022-03-03 19:38:53,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:53,736 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 3610 transitions. [2022-03-03 19:38:53,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 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) [2022-03-03 19:38:53,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 3610 transitions. [2022-03-03 19:38:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:38:53,740 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:53,740 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, 1, 1] [2022-03-03 19:38:53,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:53,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:53,960 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:53,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1367115515, now seen corresponding path program 7 times [2022-03-03 19:38:53,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:53,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695854732] [2022-03-03 19:38:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:53,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:54,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:54,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695854732] [2022-03-03 19:38:54,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695854732] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:54,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595565375] [2022-03-03 19:38:54,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:38:54,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:54,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:54,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:54,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 19:38:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:54,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:38:54,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:54,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:55,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595565375] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:55,029 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:55,029 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-03-03 19:38:55,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973667579] [2022-03-03 19:38:55,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:55,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 19:38:55,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 19:38:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-03-03 19:38:55,033 INFO L87 Difference]: Start difference. First operand 1137 states and 3610 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 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) [2022-03-03 19:38:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:56,675 INFO L93 Difference]: Finished difference Result 4727 states and 14426 transitions. [2022-03-03 19:38:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 19:38:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 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 32 [2022-03-03 19:38:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:56,698 INFO L225 Difference]: With dead ends: 4727 [2022-03-03 19:38:56,698 INFO L226 Difference]: Without dead ends: 4727 [2022-03-03 19:38:56,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1162, Invalid=3128, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 19:38:56,700 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 554 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:56,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 222 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:38:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2022-03-03 19:38:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 2168. [2022-03-03 19:38:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 3.2459621596677435) internal successors, (7034), 2167 states have internal predecessors, (7034), 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) [2022-03-03 19:38:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 7034 transitions. [2022-03-03 19:38:56,794 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 7034 transitions. Word has length 32 [2022-03-03 19:38:56,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:56,794 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 7034 transitions. [2022-03-03 19:38:56,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 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) [2022-03-03 19:38:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 7034 transitions. [2022-03-03 19:38:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:38:56,802 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:56,802 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, 1, 1] [2022-03-03 19:38:56,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:57,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:57,028 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:57,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1458806875, now seen corresponding path program 8 times [2022-03-03 19:38:57,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:57,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333915300] [2022-03-03 19:38:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:57,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:38:57,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:57,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333915300] [2022-03-03 19:38:57,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333915300] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:57,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993045817] [2022-03-03 19:38:57,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:38:57,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:57,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:57,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 19:38:57,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:38:57,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:57,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:38:57,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 19:38:57,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:38:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:57,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993045817] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:38:57,688 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:38:57,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 18 [2022-03-03 19:38:57,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955481612] [2022-03-03 19:38:57,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:38:57,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 19:38:57,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:38:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 19:38:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:38:57,690 INFO L87 Difference]: Start difference. First operand 2168 states and 7034 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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) [2022-03-03 19:38:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:38:57,822 INFO L93 Difference]: Finished difference Result 2799 states and 8918 transitions. [2022-03-03 19:38:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 19:38:57,823 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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 32 [2022-03-03 19:38:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:38:57,835 INFO L225 Difference]: With dead ends: 2799 [2022-03-03 19:38:57,836 INFO L226 Difference]: Without dead ends: 2799 [2022-03-03 19:38:57,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2022-03-03 19:38:57,836 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 349 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:38:57,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 68 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:38:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-03-03 19:38:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2149. [2022-03-03 19:38:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 3.241154562383613) internal successors, (6962), 2148 states have internal predecessors, (6962), 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) [2022-03-03 19:38:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 6962 transitions. [2022-03-03 19:38:57,905 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 6962 transitions. Word has length 32 [2022-03-03 19:38:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:38:57,906 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 6962 transitions. [2022-03-03 19:38:57,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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) [2022-03-03 19:38:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 6962 transitions. [2022-03-03 19:38:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:38:57,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:38:57,911 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:38:57,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 19:38:58,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:58,134 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:38:58,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:38:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash 412803505, now seen corresponding path program 9 times [2022-03-03 19:38:58,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:38:58,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727139620] [2022-03-03 19:38:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:38:58,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:38:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:38:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:38:58,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:38:58,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727139620] [2022-03-03 19:38:58,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727139620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:38:58,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132127457] [2022-03-03 19:38:58,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:38:58,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:38:58,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:38:58,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:38:58,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 19:38:58,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:38:58,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:38:58,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:38:58,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:38:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:38:59,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:01,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132127457] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:01,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:01,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-03-03 19:39:01,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322450997] [2022-03-03 19:39:01,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:01,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:39:01,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:39:01,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1815, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:39:01,344 INFO L87 Difference]: Start difference. First operand 2149 states and 6962 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:39:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:13,724 INFO L93 Difference]: Finished difference Result 7861 states and 24237 transitions. [2022-03-03 19:39:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-03 19:39:13,727 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:39:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:13,763 INFO L225 Difference]: With dead ends: 7861 [2022-03-03 19:39:13,764 INFO L226 Difference]: Without dead ends: 7696 [2022-03-03 19:39:13,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10002 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=4125, Invalid=23597, Unknown=0, NotChecked=0, Total=27722 [2022-03-03 19:39:13,771 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 828 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 4354 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 4354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:13,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 505 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 4354 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-03 19:39:13,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7696 states. [2022-03-03 19:39:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7696 to 2969. [2022-03-03 19:39:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 3.253369272237197) internal successors, (9656), 2968 states have internal predecessors, (9656), 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) [2022-03-03 19:39:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 9656 transitions. [2022-03-03 19:39:13,922 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 9656 transitions. Word has length 34 [2022-03-03 19:39:13,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:13,922 INFO L470 AbstractCegarLoop]: Abstraction has 2969 states and 9656 transitions. [2022-03-03 19:39:13,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:39:13,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 9656 transitions. [2022-03-03 19:39:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:39:13,930 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:13,930 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:13,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:14,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-03 19:39:14,152 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:39:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash 971839921, now seen corresponding path program 10 times [2022-03-03 19:39:14,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:14,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945565222] [2022-03-03 19:39:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:14,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:14,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:14,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945565222] [2022-03-03 19:39:14,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945565222] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:14,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107040011] [2022-03-03 19:39:14,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:39:14,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:14,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:14,486 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:14,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 19:39:14,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:39:14,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:14,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-03 19:39:14,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:15,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:16,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107040011] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:16,744 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:16,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-03 19:39:16,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293024300] [2022-03-03 19:39:16,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:16,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 19:39:16,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 19:39:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2215, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:39:16,745 INFO L87 Difference]: Start difference. First operand 2969 states and 9656 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 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) [2022-03-03 19:39:32,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:32,398 INFO L93 Difference]: Finished difference Result 10912 states and 33148 transitions. [2022-03-03 19:39:32,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-03-03 19:39:32,399 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 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 34 [2022-03-03 19:39:32,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:32,432 INFO L225 Difference]: With dead ends: 10912 [2022-03-03 19:39:32,432 INFO L226 Difference]: Without dead ends: 10686 [2022-03-03 19:39:32,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21166 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=9279, Invalid=42477, Unknown=0, NotChecked=0, Total=51756 [2022-03-03 19:39:32,436 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1151 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:32,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 698 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-03 19:39:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2022-03-03 19:39:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 3913. [2022-03-03 19:39:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 3.280930470347648) internal successors, (12835), 3912 states have internal predecessors, (12835), 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) [2022-03-03 19:39:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 12835 transitions. [2022-03-03 19:39:32,633 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 12835 transitions. Word has length 34 [2022-03-03 19:39:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:32,634 INFO L470 AbstractCegarLoop]: Abstraction has 3913 states and 12835 transitions. [2022-03-03 19:39:32,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 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) [2022-03-03 19:39:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 12835 transitions. [2022-03-03 19:39:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:39:32,644 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:32,644 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:32,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:32,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 19:39:32,871 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:39:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1964333485, now seen corresponding path program 11 times [2022-03-03 19:39:32,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:32,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627935845] [2022-03-03 19:39:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:33,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:33,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627935845] [2022-03-03 19:39:33,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627935845] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:33,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205909058] [2022-03-03 19:39:33,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:39:33,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:33,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:33,207 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:33,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 19:39:33,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:39:33,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:33,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-03 19:39:33,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:34,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:35,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205909058] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:35,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:35,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-03 19:39:35,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364211806] [2022-03-03 19:39:35,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:35,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 19:39:35,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 19:39:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2219, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:39:35,307 INFO L87 Difference]: Start difference. First operand 3913 states and 12835 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 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) [2022-03-03 19:39:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:39:49,562 INFO L93 Difference]: Finished difference Result 11044 states and 33819 transitions. [2022-03-03 19:39:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-03-03 19:39:49,563 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 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 34 [2022-03-03 19:39:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:39:49,596 INFO L225 Difference]: With dead ends: 11044 [2022-03-03 19:39:49,596 INFO L226 Difference]: Without dead ends: 10842 [2022-03-03 19:39:49,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25049 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=10854, Invalid=48438, Unknown=0, NotChecked=0, Total=59292 [2022-03-03 19:39:49,599 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1206 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 5389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:39:49,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 686 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-03 19:39:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2022-03-03 19:39:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 4299. [2022-03-03 19:39:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 4298 states have (on average 3.3187529083294556) internal successors, (14264), 4298 states have internal predecessors, (14264), 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) [2022-03-03 19:39:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 14264 transitions. [2022-03-03 19:39:49,766 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 14264 transitions. Word has length 34 [2022-03-03 19:39:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:39:49,767 INFO L470 AbstractCegarLoop]: Abstraction has 4299 states and 14264 transitions. [2022-03-03 19:39:49,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 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) [2022-03-03 19:39:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 14264 transitions. [2022-03-03 19:39:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:39:49,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:39:49,778 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:39:49,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 19:39:50,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-03 19:39:50,001 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:39:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:39:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1613065811, now seen corresponding path program 12 times [2022-03-03 19:39:50,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:39:50,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784344823] [2022-03-03 19:39:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:39:50,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:39:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:39:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:50,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:39:50,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784344823] [2022-03-03 19:39:50,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784344823] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:39:50,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060633077] [2022-03-03 19:39:50,333 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:39:50,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:39:50,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:39:50,334 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:39:50,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 19:39:50,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:39:50,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:39:50,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-03 19:39:50,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:39:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:51,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:39:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:39:52,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060633077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:39:52,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:39:52,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 18] total 48 [2022-03-03 19:39:52,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769618933] [2022-03-03 19:39:52,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:39:52,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-03 19:39:52,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:39:52,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-03 19:39:52,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 19:39:52,331 INFO L87 Difference]: Start difference. First operand 4299 states and 14264 transitions. Second operand has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 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) [2022-03-03 19:40:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:06,323 INFO L93 Difference]: Finished difference Result 10733 states and 33404 transitions. [2022-03-03 19:40:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-03-03 19:40:06,324 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 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 34 [2022-03-03 19:40:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:06,348 INFO L225 Difference]: With dead ends: 10733 [2022-03-03 19:40:06,348 INFO L226 Difference]: Without dead ends: 10515 [2022-03-03 19:40:06,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20891 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=9352, Invalid=41498, Unknown=0, NotChecked=0, Total=50850 [2022-03-03 19:40:06,352 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1236 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 4492 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:06,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 745 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4492 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-03 19:40:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2022-03-03 19:40:06,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 3833. [2022-03-03 19:40:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 3.2917536534446765) internal successors, (12614), 3832 states have internal predecessors, (12614), 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) [2022-03-03 19:40:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 12614 transitions. [2022-03-03 19:40:06,531 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 12614 transitions. Word has length 34 [2022-03-03 19:40:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:06,531 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 12614 transitions. [2022-03-03 19:40:06,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 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) [2022-03-03 19:40:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 12614 transitions. [2022-03-03 19:40:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:40:06,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:06,540 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:06,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 19:40:06,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-03 19:40:06,755 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:40:06,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1621951143, now seen corresponding path program 13 times [2022-03-03 19:40:06,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:06,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776870698] [2022-03-03 19:40:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:06,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:07,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:07,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776870698] [2022-03-03 19:40:07,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776870698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:07,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497997364] [2022-03-03 19:40:07,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:40:07,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:07,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:07,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:07,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 19:40:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:40:07,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:08,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:10,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497997364] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:10,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:10,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2022-03-03 19:40:10,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951293323] [2022-03-03 19:40:10,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:10,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 19:40:10,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 19:40:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2166, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:40:10,332 INFO L87 Difference]: Start difference. First operand 3833 states and 12614 transitions. Second operand has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 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) [2022-03-03 19:40:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:24,478 INFO L93 Difference]: Finished difference Result 10462 states and 32329 transitions. [2022-03-03 19:40:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-03-03 19:40:24,478 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 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 34 [2022-03-03 19:40:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:24,503 INFO L225 Difference]: With dead ends: 10462 [2022-03-03 19:40:24,503 INFO L226 Difference]: Without dead ends: 10307 [2022-03-03 19:40:24,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7919 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=3778, Invalid=17978, Unknown=0, NotChecked=0, Total=21756 [2022-03-03 19:40:24,505 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 682 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:24,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 598 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-03 19:40:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2022-03-03 19:40:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 4521. [2022-03-03 19:40:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 4520 states have (on average 3.308628318584071) internal successors, (14955), 4520 states have internal predecessors, (14955), 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) [2022-03-03 19:40:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 14955 transitions. [2022-03-03 19:40:24,661 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 14955 transitions. Word has length 34 [2022-03-03 19:40:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:24,662 INFO L470 AbstractCegarLoop]: Abstraction has 4521 states and 14955 transitions. [2022-03-03 19:40:24,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 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) [2022-03-03 19:40:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 14955 transitions. [2022-03-03 19:40:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:40:24,675 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:24,675 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:24,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-03 19:40:24,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-03 19:40:24,875 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:40:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash 596520025, now seen corresponding path program 14 times [2022-03-03 19:40:24,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:24,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007458018] [2022-03-03 19:40:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:25,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:25,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007458018] [2022-03-03 19:40:25,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007458018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:25,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969296882] [2022-03-03 19:40:25,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:40:25,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:25,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:25,232 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:25,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 19:40:25,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:40:25,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:25,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 19:40:25,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:26,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:27,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969296882] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:27,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:27,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 47 [2022-03-03 19:40:27,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453964273] [2022-03-03 19:40:27,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:27,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-03 19:40:27,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:27,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-03 19:40:27,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1896, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 19:40:27,670 INFO L87 Difference]: Start difference. First operand 4521 states and 14955 transitions. Second operand has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 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) [2022-03-03 19:40:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:40:44,330 INFO L93 Difference]: Finished difference Result 11942 states and 37849 transitions. [2022-03-03 19:40:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-03-03 19:40:44,330 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 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 34 [2022-03-03 19:40:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:40:44,376 INFO L225 Difference]: With dead ends: 11942 [2022-03-03 19:40:44,377 INFO L226 Difference]: Without dead ends: 11777 [2022-03-03 19:40:44,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20629 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=7611, Invalid=44145, Unknown=0, NotChecked=0, Total=51756 [2022-03-03 19:40:44,379 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 865 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:40:44,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 570 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 5286 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 19:40:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11777 states. [2022-03-03 19:40:44,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11777 to 4932. [2022-03-03 19:40:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4931 states have (on average 3.3050091259379437) internal successors, (16297), 4931 states have internal predecessors, (16297), 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) [2022-03-03 19:40:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 16297 transitions. [2022-03-03 19:40:44,565 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 16297 transitions. Word has length 34 [2022-03-03 19:40:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:40:44,565 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 16297 transitions. [2022-03-03 19:40:44,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 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) [2022-03-03 19:40:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 16297 transitions. [2022-03-03 19:40:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:40:44,576 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:40:44,576 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:40:44,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 19:40:44,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-03 19:40:44,803 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:40:44,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:40:44,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1798267431, now seen corresponding path program 15 times [2022-03-03 19:40:44,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:40:44,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842168064] [2022-03-03 19:40:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:40:44,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:40:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:40:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:45,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:40:45,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842168064] [2022-03-03 19:40:45,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842168064] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:40:45,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641703069] [2022-03-03 19:40:45,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:40:45,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:40:45,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:40:45,176 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:40:45,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 19:40:45,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:40:45,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:40:45,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 19:40:45,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:40:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:46,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:40:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:40:47,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641703069] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:40:47,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:40:47,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-03-03 19:40:47,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87127194] [2022-03-03 19:40:47,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:40:47,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:40:47,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:40:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:40:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:40:47,513 INFO L87 Difference]: Start difference. First operand 4932 states and 16297 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:41:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:03,114 INFO L93 Difference]: Finished difference Result 16468 states and 52786 transitions. [2022-03-03 19:41:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-03-03 19:41:03,114 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:41:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:03,152 INFO L225 Difference]: With dead ends: 16468 [2022-03-03 19:41:03,152 INFO L226 Difference]: Without dead ends: 16303 [2022-03-03 19:41:03,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14557 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=7548, Invalid=32652, Unknown=0, NotChecked=0, Total=40200 [2022-03-03 19:41:03,155 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 764 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 4307 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 4769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 4307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:03,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 510 Invalid, 4769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 4307 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-03 19:41:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16303 states. [2022-03-03 19:41:03,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16303 to 6713. [2022-03-03 19:41:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6713 states, 6712 states have (on average 3.362485101311085) internal successors, (22569), 6712 states have internal predecessors, (22569), 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) [2022-03-03 19:41:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 22569 transitions. [2022-03-03 19:41:03,428 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 22569 transitions. Word has length 34 [2022-03-03 19:41:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:03,429 INFO L470 AbstractCegarLoop]: Abstraction has 6713 states and 22569 transitions. [2022-03-03 19:41:03,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:41:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 22569 transitions. [2022-03-03 19:41:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:41:03,444 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:03,445 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:03,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:03,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:03,659 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:41:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash 342899377, now seen corresponding path program 16 times [2022-03-03 19:41:03,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:03,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67114347] [2022-03-03 19:41:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:03,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:03,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:03,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67114347] [2022-03-03 19:41:03,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67114347] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:03,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790220300] [2022-03-03 19:41:03,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:41:03,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:03,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:03,938 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:03,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 19:41:03,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:41:03,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:03,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:41:03,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:04,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:07,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790220300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:07,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:07,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 19:41:07,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032834201] [2022-03-03 19:41:07,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:07,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:41:07,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:41:07,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1809, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:41:07,768 INFO L87 Difference]: Start difference. First operand 6713 states and 22569 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:41:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:13,985 INFO L93 Difference]: Finished difference Result 12518 states and 40141 transitions. [2022-03-03 19:41:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-03 19:41:13,986 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:41:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:14,007 INFO L225 Difference]: With dead ends: 12518 [2022-03-03 19:41:14,007 INFO L226 Difference]: Without dead ends: 12273 [2022-03-03 19:41:14,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1649, Invalid=7471, Unknown=0, NotChecked=0, Total=9120 [2022-03-03 19:41:14,008 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 560 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:14,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 451 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 19:41:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2022-03-03 19:41:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 6834. [2022-03-03 19:41:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6834 states, 6833 states have (on average 3.3647007171081516) internal successors, (22991), 6833 states have internal predecessors, (22991), 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) [2022-03-03 19:41:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 22991 transitions. [2022-03-03 19:41:14,178 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 22991 transitions. Word has length 34 [2022-03-03 19:41:14,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:14,178 INFO L470 AbstractCegarLoop]: Abstraction has 6834 states and 22991 transitions. [2022-03-03 19:41:14,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:41:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 22991 transitions. [2022-03-03 19:41:14,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:41:14,193 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:14,193 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:14,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:14,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:14,407 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:41:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1264601517, now seen corresponding path program 17 times [2022-03-03 19:41:14,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:14,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294245328] [2022-03-03 19:41:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:14,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:14,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:14,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294245328] [2022-03-03 19:41:14,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294245328] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:14,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082309034] [2022-03-03 19:41:14,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:41:14,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:14,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:14,684 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:14,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 19:41:14,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:41:14,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:14,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:41:14,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:15,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:18,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082309034] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:18,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:18,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 19:41:18,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902347166] [2022-03-03 19:41:18,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:18,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:41:18,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:18,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:41:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1790, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:41:18,517 INFO L87 Difference]: Start difference. First operand 6834 states and 22991 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:41:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:26,334 INFO L93 Difference]: Finished difference Result 14485 states and 46677 transitions. [2022-03-03 19:41:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-03 19:41:26,335 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:41:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:26,361 INFO L225 Difference]: With dead ends: 14485 [2022-03-03 19:41:26,361 INFO L226 Difference]: Without dead ends: 14245 [2022-03-03 19:41:26,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2257, Invalid=9733, Unknown=0, NotChecked=0, Total=11990 [2022-03-03 19:41:26,362 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 602 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:26,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 394 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 19:41:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2022-03-03 19:41:26,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 6800. [2022-03-03 19:41:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 6799 states have (on average 3.3582879835269894) internal successors, (22833), 6799 states have internal predecessors, (22833), 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) [2022-03-03 19:41:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 22833 transitions. [2022-03-03 19:41:26,569 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 22833 transitions. Word has length 34 [2022-03-03 19:41:26,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:26,569 INFO L470 AbstractCegarLoop]: Abstraction has 6800 states and 22833 transitions. [2022-03-03 19:41:26,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:41:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 22833 transitions. [2022-03-03 19:41:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:41:26,585 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:26,585 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:26,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:26,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:26,807 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:41:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1194491481, now seen corresponding path program 18 times [2022-03-03 19:41:26,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:26,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88005534] [2022-03-03 19:41:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:26,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:27,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:27,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88005534] [2022-03-03 19:41:27,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88005534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:27,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008290673] [2022-03-03 19:41:27,077 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:41:27,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:27,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:27,083 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:27,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 19:41:27,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:41:27,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:27,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:41:27,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:27,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:30,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008290673] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:30,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:30,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-03 19:41:30,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094216556] [2022-03-03 19:41:30,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:30,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:41:30,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:41:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1630, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:41:30,780 INFO L87 Difference]: Start difference. First operand 6800 states and 22833 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:41:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:37,938 INFO L93 Difference]: Finished difference Result 11835 states and 38385 transitions. [2022-03-03 19:41:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 19:41:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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 34 [2022-03-03 19:41:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:37,961 INFO L225 Difference]: With dead ends: 11835 [2022-03-03 19:41:37,961 INFO L226 Difference]: Without dead ends: 11595 [2022-03-03 19:41:37,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2636 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1743, Invalid=7569, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 19:41:37,962 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 544 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:37,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 246 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 19:41:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2022-03-03 19:41:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 6779. [2022-03-03 19:41:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 6778 states have (on average 3.357627618766598) internal successors, (22758), 6778 states have internal predecessors, (22758), 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) [2022-03-03 19:41:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 22758 transitions. [2022-03-03 19:41:38,170 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 22758 transitions. Word has length 34 [2022-03-03 19:41:38,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:38,170 INFO L470 AbstractCegarLoop]: Abstraction has 6779 states and 22758 transitions. [2022-03-03 19:41:38,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:41:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 22758 transitions. [2022-03-03 19:41:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:41:38,183 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:38,183 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:38,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 19:41:38,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:38,385 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:41:38,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash 188911329, now seen corresponding path program 19 times [2022-03-03 19:41:38,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:38,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528888851] [2022-03-03 19:41:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:38,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:38,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:38,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528888851] [2022-03-03 19:41:38,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528888851] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:38,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982380048] [2022-03-03 19:41:38,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:41:38,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:38,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:38,673 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:38,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 19:41:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:38,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:41:38,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:39,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:42,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982380048] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:42,651 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:42,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 19:41:42,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340666348] [2022-03-03 19:41:42,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:42,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:41:42,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:41:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:41:42,652 INFO L87 Difference]: Start difference. First operand 6779 states and 22758 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:41:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:41:48,961 INFO L93 Difference]: Finished difference Result 11575 states and 37220 transitions. [2022-03-03 19:41:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 19:41:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:41:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:41:48,981 INFO L225 Difference]: With dead ends: 11575 [2022-03-03 19:41:48,981 INFO L226 Difference]: Without dead ends: 11436 [2022-03-03 19:41:48,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2814 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1849, Invalid=7463, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 19:41:48,982 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 767 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:41:48,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 435 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 19:41:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2022-03-03 19:41:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 6931. [2022-03-03 19:41:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6931 states, 6930 states have (on average 3.3593073593073592) internal successors, (23280), 6930 states have internal predecessors, (23280), 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) [2022-03-03 19:41:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 23280 transitions. [2022-03-03 19:41:49,131 INFO L78 Accepts]: Start accepts. Automaton has 6931 states and 23280 transitions. Word has length 34 [2022-03-03 19:41:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:41:49,131 INFO L470 AbstractCegarLoop]: Abstraction has 6931 states and 23280 transitions. [2022-03-03 19:41:49,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:41:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 6931 states and 23280 transitions. [2022-03-03 19:41:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:41:49,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:41:49,147 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:41:49,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-03 19:41:49,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:49,348 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:41:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:41:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1337834849, now seen corresponding path program 20 times [2022-03-03 19:41:49,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:41:49,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338021805] [2022-03-03 19:41:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:41:49,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:41:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:41:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:49,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:41:49,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338021805] [2022-03-03 19:41:49,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338021805] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:41:49,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742870069] [2022-03-03 19:41:49,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:41:49,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:41:49,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:41:49,599 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:41:49,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 19:41:49,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:41:49,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:41:49,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:41:49,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:41:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:50,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:41:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:41:53,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742870069] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:41:53,624 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:41:53,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-03 19:41:53,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392838391] [2022-03-03 19:41:53,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:41:53,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:41:53,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:41:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:41:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:41:53,626 INFO L87 Difference]: Start difference. First operand 6931 states and 23280 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:42:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:01,985 INFO L93 Difference]: Finished difference Result 13668 states and 44628 transitions. [2022-03-03 19:42:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-03 19:42:01,985 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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 34 [2022-03-03 19:42:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:02,010 INFO L225 Difference]: With dead ends: 13668 [2022-03-03 19:42:02,010 INFO L226 Difference]: Without dead ends: 13441 [2022-03-03 19:42:02,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4700 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2406, Invalid=11636, Unknown=0, NotChecked=0, Total=14042 [2022-03-03 19:42:02,012 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 735 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:02,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 368 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-03 19:42:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13441 states. [2022-03-03 19:42:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13441 to 6968. [2022-03-03 19:42:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6967 states have (on average 3.3585474379216307) internal successors, (23399), 6967 states have internal predecessors, (23399), 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) [2022-03-03 19:42:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 23399 transitions. [2022-03-03 19:42:02,167 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 23399 transitions. Word has length 34 [2022-03-03 19:42:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:02,167 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 23399 transitions. [2022-03-03 19:42:02,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:42:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 23399 transitions. [2022-03-03 19:42:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:42:02,178 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:02,178 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:02,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-03-03 19:42:02,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:02,379 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:42:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -982878999, now seen corresponding path program 21 times [2022-03-03 19:42:02,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:02,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203790011] [2022-03-03 19:42:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:02,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:02,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203790011] [2022-03-03 19:42:02,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203790011] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:02,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882608371] [2022-03-03 19:42:02,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:42:02,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:02,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:02,726 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:02,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 19:42:02,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:42:02,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 19:42:02,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:03,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:05,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882608371] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:05,023 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:05,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-03-03 19:42:05,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405519763] [2022-03-03 19:42:05,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:05,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:42:05,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:05,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:42:05,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:42:05,025 INFO L87 Difference]: Start difference. First operand 6968 states and 23399 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:42:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:22,633 INFO L93 Difference]: Finished difference Result 20771 states and 67025 transitions. [2022-03-03 19:42:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-03-03 19:42:22,633 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:42:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:22,676 INFO L225 Difference]: With dead ends: 20771 [2022-03-03 19:42:22,676 INFO L226 Difference]: Without dead ends: 20597 [2022-03-03 19:42:22,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17435 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=8467, Invalid=37543, Unknown=0, NotChecked=0, Total=46010 [2022-03-03 19:42:22,678 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 916 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 4447 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:22,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 589 Invalid, 4979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 4447 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-03 19:42:22,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20597 states. [2022-03-03 19:42:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20597 to 8044. [2022-03-03 19:42:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8044 states, 8043 states have (on average 3.3851796593310954) internal successors, (27227), 8043 states have internal predecessors, (27227), 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) [2022-03-03 19:42:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 27227 transitions. [2022-03-03 19:42:22,939 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 27227 transitions. Word has length 34 [2022-03-03 19:42:22,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:22,940 INFO L470 AbstractCegarLoop]: Abstraction has 8044 states and 27227 transitions. [2022-03-03 19:42:22,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:42:22,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 27227 transitions. [2022-03-03 19:42:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:42:22,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:22,953 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:22,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 19:42:23,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-03-03 19:42:23,154 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:42:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1158287809, now seen corresponding path program 22 times [2022-03-03 19:42:23,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:23,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797688639] [2022-03-03 19:42:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:23,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:23,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797688639] [2022-03-03 19:42:23,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797688639] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:23,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459119741] [2022-03-03 19:42:23,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:42:23,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:23,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:23,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:23,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 19:42:23,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:42:23,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:42:23,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:24,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:27,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459119741] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:27,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:27,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 19:42:27,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370199373] [2022-03-03 19:42:27,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:27,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:42:27,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:42:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1836, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:42:27,040 INFO L87 Difference]: Start difference. First operand 8044 states and 27227 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:42:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:36,990 INFO L93 Difference]: Finished difference Result 17291 states and 55744 transitions. [2022-03-03 19:42:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-03 19:42:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:42:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:37,025 INFO L225 Difference]: With dead ends: 17291 [2022-03-03 19:42:37,025 INFO L226 Difference]: Without dead ends: 17083 [2022-03-03 19:42:37,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5521 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2857, Invalid=13913, Unknown=0, NotChecked=0, Total=16770 [2022-03-03 19:42:37,027 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 664 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:37,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 422 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 19:42:37,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17083 states. [2022-03-03 19:42:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17083 to 8543. [2022-03-03 19:42:37,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8543 states, 8542 states have (on average 3.403418403184266) internal successors, (29072), 8542 states have internal predecessors, (29072), 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) [2022-03-03 19:42:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8543 states to 8543 states and 29072 transitions. [2022-03-03 19:42:37,238 INFO L78 Accepts]: Start accepts. Automaton has 8543 states and 29072 transitions. Word has length 34 [2022-03-03 19:42:37,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:37,238 INFO L470 AbstractCegarLoop]: Abstraction has 8543 states and 29072 transitions. [2022-03-03 19:42:37,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:42:37,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8543 states and 29072 transitions. [2022-03-03 19:42:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:42:37,252 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:37,252 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:37,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 19:42:37,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-03 19:42:37,452 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:42:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2079989949, now seen corresponding path program 23 times [2022-03-03 19:42:37,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:37,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946124694] [2022-03-03 19:42:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:37,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:37,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:37,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946124694] [2022-03-03 19:42:37,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946124694] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:37,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934573050] [2022-03-03 19:42:37,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:42:37,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:37,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:37,756 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:37,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 19:42:37,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:42:37,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:37,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:42:37,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:38,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:41,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934573050] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:41,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:41,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 19:42:41,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412881463] [2022-03-03 19:42:41,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:41,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:42:41,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:41,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:42:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:42:41,285 INFO L87 Difference]: Start difference. First operand 8543 states and 29072 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:42:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:42:51,736 INFO L93 Difference]: Finished difference Result 18582 states and 60299 transitions. [2022-03-03 19:42:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-03 19:42:51,736 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:42:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:42:51,774 INFO L225 Difference]: With dead ends: 18582 [2022-03-03 19:42:51,775 INFO L226 Difference]: Without dead ends: 18404 [2022-03-03 19:42:51,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6402 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=3342, Invalid=15290, Unknown=0, NotChecked=0, Total=18632 [2022-03-03 19:42:51,776 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 689 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:42:51,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 360 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-03 19:42:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2022-03-03 19:42:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 8453. [2022-03-03 19:42:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8453 states, 8452 states have (on average 3.3917415996213913) internal successors, (28667), 8452 states have internal predecessors, (28667), 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) [2022-03-03 19:42:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8453 states to 8453 states and 28667 transitions. [2022-03-03 19:42:52,069 INFO L78 Accepts]: Start accepts. Automaton has 8453 states and 28667 transitions. Word has length 34 [2022-03-03 19:42:52,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:42:52,069 INFO L470 AbstractCegarLoop]: Abstraction has 8453 states and 28667 transitions. [2022-03-03 19:42:52,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:42:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8453 states and 28667 transitions. [2022-03-03 19:42:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:42:52,082 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:42:52,082 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:42:52,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-03 19:42:52,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-03 19:42:52,282 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:42:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:42:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2009879913, now seen corresponding path program 24 times [2022-03-03 19:42:52,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:42:52,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885617752] [2022-03-03 19:42:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:42:52,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:42:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:42:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:52,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:42:52,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885617752] [2022-03-03 19:42:52,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885617752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:42:52,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474877533] [2022-03-03 19:42:52,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:42:52,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:42:52,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:42:52,549 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:42:52,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 19:42:52,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:42:52,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:42:52,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:42:52,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:42:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:53,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:42:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:42:56,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474877533] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:42:56,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:42:56,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-03 19:42:56,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049888443] [2022-03-03 19:42:56,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:42:56,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:42:56,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:42:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:42:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:42:56,040 INFO L87 Difference]: Start difference. First operand 8453 states and 28667 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:43:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:03,074 INFO L93 Difference]: Finished difference Result 15036 states and 49177 transitions. [2022-03-03 19:43:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-03 19:43:03,075 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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 34 [2022-03-03 19:43:03,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:03,107 INFO L225 Difference]: With dead ends: 15036 [2022-03-03 19:43:03,107 INFO L226 Difference]: Without dead ends: 14858 [2022-03-03 19:43:03,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1795, Invalid=8305, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 19:43:03,108 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 565 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:03,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 249 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 19:43:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14858 states. [2022-03-03 19:43:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14858 to 8423. [2022-03-03 19:43:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8422 states have (on average 3.392780812158632) internal successors, (28574), 8422 states have internal predecessors, (28574), 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) [2022-03-03 19:43:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 28574 transitions. [2022-03-03 19:43:03,322 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 28574 transitions. Word has length 34 [2022-03-03 19:43:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:03,323 INFO L470 AbstractCegarLoop]: Abstraction has 8423 states and 28574 transitions. [2022-03-03 19:43:03,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:43:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 28574 transitions. [2022-03-03 19:43:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:43:03,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:03,338 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:03,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:03,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:03,545 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:43:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1818983591, now seen corresponding path program 25 times [2022-03-03 19:43:03,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:03,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584165954] [2022-03-03 19:43:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:03,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:03,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:03,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584165954] [2022-03-03 19:43:03,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584165954] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:03,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458210082] [2022-03-03 19:43:03,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:43:03,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:03,915 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:03,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 19:43:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:03,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 19:43:03,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:04,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:07,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458210082] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:07,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:07,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-03-03 19:43:07,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083944426] [2022-03-03 19:43:07,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:07,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 19:43:07,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 19:43:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2072, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 19:43:07,134 INFO L87 Difference]: Start difference. First operand 8423 states and 28574 transitions. Second operand has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 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) [2022-03-03 19:43:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:19,445 INFO L93 Difference]: Finished difference Result 15516 states and 50211 transitions. [2022-03-03 19:43:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-03-03 19:43:19,445 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 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 34 [2022-03-03 19:43:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:19,474 INFO L225 Difference]: With dead ends: 15516 [2022-03-03 19:43:19,474 INFO L226 Difference]: Without dead ends: 15379 [2022-03-03 19:43:19,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9536 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=5079, Invalid=22311, Unknown=0, NotChecked=0, Total=27390 [2022-03-03 19:43:19,476 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 751 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:19,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 545 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-03 19:43:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15379 states. [2022-03-03 19:43:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15379 to 8748. [2022-03-03 19:43:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8748 states, 8747 states have (on average 3.406082085286384) internal successors, (29793), 8747 states have internal predecessors, (29793), 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) [2022-03-03 19:43:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8748 states to 8748 states and 29793 transitions. [2022-03-03 19:43:19,700 INFO L78 Accepts]: Start accepts. Automaton has 8748 states and 29793 transitions. Word has length 34 [2022-03-03 19:43:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:19,700 INFO L470 AbstractCegarLoop]: Abstraction has 8748 states and 29793 transitions. [2022-03-03 19:43:19,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 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) [2022-03-03 19:43:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8748 states and 29793 transitions. [2022-03-03 19:43:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:43:19,716 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:19,716 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:19,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:19,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 19:43:19,939 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:43:19,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash -472964259, now seen corresponding path program 26 times [2022-03-03 19:43:19,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:19,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577185864] [2022-03-03 19:43:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:19,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:20,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:20,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577185864] [2022-03-03 19:43:20,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577185864] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:20,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964706671] [2022-03-03 19:43:20,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:43:20,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:20,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:20,246 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:20,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 19:43:20,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:43:20,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:20,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 19:43:20,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:21,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:23,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964706671] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:23,310 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:23,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-03-03 19:43:23,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49607414] [2022-03-03 19:43:23,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:23,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:43:23,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:43:23,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:43:23,311 INFO L87 Difference]: Start difference. First operand 8748 states and 29793 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:43:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:41,241 INFO L93 Difference]: Finished difference Result 16682 states and 54028 transitions. [2022-03-03 19:43:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-03-03 19:43:41,241 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:43:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:41,306 INFO L225 Difference]: With dead ends: 16682 [2022-03-03 19:43:41,306 INFO L226 Difference]: Without dead ends: 16535 [2022-03-03 19:43:41,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18050 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=7846, Invalid=38594, Unknown=0, NotChecked=0, Total=46440 [2022-03-03 19:43:41,308 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 921 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:41,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 619 Invalid, 5689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 5158 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 19:43:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16535 states. [2022-03-03 19:43:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16535 to 8674. [2022-03-03 19:43:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 3.401937046004843) internal successors, (29505), 8673 states have internal predecessors, (29505), 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) [2022-03-03 19:43:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 29505 transitions. [2022-03-03 19:43:41,504 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 29505 transitions. Word has length 34 [2022-03-03 19:43:41,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:41,505 INFO L470 AbstractCegarLoop]: Abstraction has 8674 states and 29505 transitions. [2022-03-03 19:43:41,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:43:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 29505 transitions. [2022-03-03 19:43:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:43:41,517 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:41,517 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:41,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-03 19:43:41,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-03 19:43:41,718 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:43:41,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:41,718 INFO L85 PathProgramCache]: Analyzing trace with hash 445215345, now seen corresponding path program 27 times [2022-03-03 19:43:41,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:41,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051100830] [2022-03-03 19:43:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:41,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:43:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:42,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:43:42,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051100830] [2022-03-03 19:43:42,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051100830] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:43:42,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361734801] [2022-03-03 19:43:42,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:43:42,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:42,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:43:42,059 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:43:42,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 19:43:42,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:43:42,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:43:42,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:43:42,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:43:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:42,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:43:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:43:45,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361734801] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:43:45,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:43:45,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-03 19:43:45,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128904859] [2022-03-03 19:43:45,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:43:45,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:43:45,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:43:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:43:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:43:45,882 INFO L87 Difference]: Start difference. First operand 8674 states and 29505 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:43:59,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:43:59,127 INFO L93 Difference]: Finished difference Result 27617 states and 90885 transitions. [2022-03-03 19:43:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-03 19:43:59,127 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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 34 [2022-03-03 19:43:59,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:43:59,184 INFO L225 Difference]: With dead ends: 27617 [2022-03-03 19:43:59,184 INFO L226 Difference]: Without dead ends: 27408 [2022-03-03 19:43:59,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8172 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=4436, Invalid=19744, Unknown=0, NotChecked=0, Total=24180 [2022-03-03 19:43:59,185 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 700 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:43:59,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 582 Invalid, 4796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-03 19:43:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27408 states. [2022-03-03 19:43:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27408 to 12080. [2022-03-03 19:43:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12080 states, 12079 states have (on average 3.4684990479344315) internal successors, (41896), 12079 states have internal predecessors, (41896), 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) [2022-03-03 19:43:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12080 states to 12080 states and 41896 transitions. [2022-03-03 19:43:59,631 INFO L78 Accepts]: Start accepts. Automaton has 12080 states and 41896 transitions. Word has length 34 [2022-03-03 19:43:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:43:59,632 INFO L470 AbstractCegarLoop]: Abstraction has 12080 states and 41896 transitions. [2022-03-03 19:43:59,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:43:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 12080 states and 41896 transitions. [2022-03-03 19:43:59,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:43:59,651 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:43:59,651 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:43:59,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 19:43:59,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:43:59,852 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:43:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:43:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1498004759, now seen corresponding path program 28 times [2022-03-03 19:43:59,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:43:59,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700487636] [2022-03-03 19:43:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:43:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:43:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:44:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:00,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:44:00,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700487636] [2022-03-03 19:44:00,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700487636] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:44:00,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962497465] [2022-03-03 19:44:00,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:44:00,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:44:00,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:44:00,223 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:44:00,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 19:44:00,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:44:00,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:44:00,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:44:00,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:44:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:01,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:44:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:03,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962497465] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:44:03,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:44:03,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 19:44:03,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182602540] [2022-03-03 19:44:03,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:44:03,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:44:03,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:44:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:44:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:44:03,918 INFO L87 Difference]: Start difference. First operand 12080 states and 41896 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:44:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:44:11,788 INFO L93 Difference]: Finished difference Result 26957 states and 90433 transitions. [2022-03-03 19:44:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-03 19:44:11,788 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:44:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:44:11,908 INFO L225 Difference]: With dead ends: 26957 [2022-03-03 19:44:11,908 INFO L226 Difference]: Without dead ends: 26819 [2022-03-03 19:44:11,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3170, Invalid=11592, Unknown=0, NotChecked=0, Total=14762 [2022-03-03 19:44:11,909 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 824 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:44:11,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 340 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-03 19:44:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26819 states. [2022-03-03 19:44:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26819 to 14045. [2022-03-03 19:44:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 14044 states have (on average 3.498433494730846) internal successors, (49132), 14044 states have internal predecessors, (49132), 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) [2022-03-03 19:44:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 49132 transitions. [2022-03-03 19:44:12,315 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 49132 transitions. Word has length 34 [2022-03-03 19:44:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:44:12,315 INFO L470 AbstractCegarLoop]: Abstraction has 14045 states and 49132 transitions. [2022-03-03 19:44:12,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:44:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 49132 transitions. [2022-03-03 19:44:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:44:12,397 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:44:12,397 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:44:12,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-03 19:44:12,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:44:12,598 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:44:12,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:44:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash -870461771, now seen corresponding path program 29 times [2022-03-03 19:44:12,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:44:12,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622580049] [2022-03-03 19:44:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:44:12,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:44:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:44:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:12,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:44:12,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622580049] [2022-03-03 19:44:12,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622580049] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:44:12,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35959189] [2022-03-03 19:44:12,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:44:12,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:44:12,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:44:12,921 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:44:12,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 19:44:12,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:44:12,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:44:12,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-03 19:44:12,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:44:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:13,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:44:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:17,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35959189] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:44:17,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:44:17,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 19:44:17,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487831789] [2022-03-03 19:44:17,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:44:17,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:44:17,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:44:17,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:44:17,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1826, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:44:17,510 INFO L87 Difference]: Start difference. First operand 14045 states and 49132 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:44:36,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:44:36,035 INFO L93 Difference]: Finished difference Result 27731 states and 91215 transitions. [2022-03-03 19:44:36,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-03 19:44:36,036 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:44:36,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:44:36,099 INFO L225 Difference]: With dead ends: 27731 [2022-03-03 19:44:36,099 INFO L226 Difference]: Without dead ends: 27518 [2022-03-03 19:44:36,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=5374, Invalid=24382, Unknown=0, NotChecked=0, Total=29756 [2022-03-03 19:44:36,101 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 792 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:44:36,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 686 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3553 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-03 19:44:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27518 states. [2022-03-03 19:44:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27518 to 15571. [2022-03-03 19:44:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 3.5063583815028903) internal successors, (54594), 15570 states have internal predecessors, (54594), 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) [2022-03-03 19:44:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 54594 transitions. [2022-03-03 19:44:36,537 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 54594 transitions. Word has length 34 [2022-03-03 19:44:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:44:36,538 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 54594 transitions. [2022-03-03 19:44:36,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:44:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 54594 transitions. [2022-03-03 19:44:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:44:36,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:44:36,562 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:44:36,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 19:44:36,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:44:36,764 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:44:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:44:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 278461749, now seen corresponding path program 30 times [2022-03-03 19:44:36,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:44:36,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697935792] [2022-03-03 19:44:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:44:36,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:44:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:44:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:37,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:44:37,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697935792] [2022-03-03 19:44:37,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697935792] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:44:37,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119580854] [2022-03-03 19:44:37,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:44:37,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:44:37,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:44:37,026 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:44:37,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 19:44:37,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:44:37,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:44:37,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:44:37,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:44:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:37,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:44:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:40,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119580854] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:44:40,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:44:40,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-03 19:44:40,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916919907] [2022-03-03 19:44:40,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:44:40,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:44:40,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:44:40,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:44:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1649, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:44:40,858 INFO L87 Difference]: Start difference. First operand 15571 states and 54594 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:44:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:44:53,899 INFO L93 Difference]: Finished difference Result 28288 states and 95943 transitions. [2022-03-03 19:44:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-03-03 19:44:53,899 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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 34 [2022-03-03 19:44:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:44:53,987 INFO L225 Difference]: With dead ends: 28288 [2022-03-03 19:44:53,987 INFO L226 Difference]: Without dead ends: 28097 [2022-03-03 19:44:53,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8540 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=4162, Invalid=20018, Unknown=0, NotChecked=0, Total=24180 [2022-03-03 19:44:53,988 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 722 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 4611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:44:53,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 413 Invalid, 4611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-03 19:44:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28097 states. [2022-03-03 19:44:54,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28097 to 15481. [2022-03-03 19:44:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 15480 states have (on average 3.5050387596899224) internal successors, (54258), 15480 states have internal predecessors, (54258), 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) [2022-03-03 19:44:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 54258 transitions. [2022-03-03 19:44:54,426 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 54258 transitions. Word has length 34 [2022-03-03 19:44:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:44:54,426 INFO L470 AbstractCegarLoop]: Abstraction has 15481 states and 54258 transitions. [2022-03-03 19:44:54,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:44:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 54258 transitions. [2022-03-03 19:44:54,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:44:54,451 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:44:54,451 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:44:54,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-03 19:44:54,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:44:54,651 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:44:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:44:54,652 INFO L85 PathProgramCache]: Analyzing trace with hash 726875713, now seen corresponding path program 31 times [2022-03-03 19:44:54,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:44:54,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524865584] [2022-03-03 19:44:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:44:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:44:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:44:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:54,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:44:54,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524865584] [2022-03-03 19:44:54,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524865584] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:44:54,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281119458] [2022-03-03 19:44:54,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:44:54,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:44:54,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:44:54,917 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:44:54,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 19:44:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:44:54,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:44:54,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:44:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:55,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:44:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:44:58,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281119458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:44:58,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:44:58,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 19:44:58,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263762229] [2022-03-03 19:44:58,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:44:58,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 19:44:58,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:44:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 19:44:58,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 19:44:58,809 INFO L87 Difference]: Start difference. First operand 15481 states and 54258 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:45:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:45:07,705 INFO L93 Difference]: Finished difference Result 29297 states and 98478 transitions. [2022-03-03 19:45:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-03 19:45:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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 34 [2022-03-03 19:45:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:45:07,785 INFO L225 Difference]: With dead ends: 29297 [2022-03-03 19:45:07,785 INFO L226 Difference]: Without dead ends: 29071 [2022-03-03 19:45:07,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6575 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=3924, Invalid=15258, Unknown=0, NotChecked=0, Total=19182 [2022-03-03 19:45:07,786 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 594 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 3712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:45:07,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 430 Invalid, 3712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-03 19:45:07,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2022-03-03 19:45:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 17955. [2022-03-03 19:45:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17955 states, 17954 states have (on average 3.5179904199621252) internal successors, (63162), 17954 states have internal predecessors, (63162), 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) [2022-03-03 19:45:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 63162 transitions. [2022-03-03 19:45:08,389 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 63162 transitions. Word has length 34 [2022-03-03 19:45:08,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:45:08,390 INFO L470 AbstractCegarLoop]: Abstraction has 17955 states and 63162 transitions. [2022-03-03 19:45:08,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 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) [2022-03-03 19:45:08,390 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 63162 transitions. [2022-03-03 19:45:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:45:08,418 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:45:08,418 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:45:08,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-03 19:45:08,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-03 19:45:08,619 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:45:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:45:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1648577853, now seen corresponding path program 32 times [2022-03-03 19:45:08,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:45:08,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006026810] [2022-03-03 19:45:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:45:08,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:45:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:45:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:45:08,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:45:08,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006026810] [2022-03-03 19:45:08,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006026810] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:45:08,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503681899] [2022-03-03 19:45:08,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:45:08,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:45:08,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:45:08,884 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:45:08,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 19:45:08,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:45:08,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:45:08,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 19:45:08,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:45:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:45:09,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:45:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:45:12,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503681899] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:45:12,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:45:12,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-03 19:45:12,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434697976] [2022-03-03 19:45:12,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:45:12,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 19:45:12,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:45:12,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 19:45:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 19:45:12,772 INFO L87 Difference]: Start difference. First operand 17955 states and 63162 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:45:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:45:20,262 INFO L93 Difference]: Finished difference Result 29870 states and 101083 transitions. [2022-03-03 19:45:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-03 19:45:20,263 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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 34 [2022-03-03 19:45:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:45:20,351 INFO L225 Difference]: With dead ends: 29870 [2022-03-03 19:45:20,352 INFO L226 Difference]: Without dead ends: 29732 [2022-03-03 19:45:20,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5259 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3295, Invalid=12961, Unknown=0, NotChecked=0, Total=16256 [2022-03-03 19:45:20,353 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 455 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:45:20,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 333 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3406 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-03 19:45:20,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29732 states. [2022-03-03 19:45:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29732 to 18408. [2022-03-03 19:45:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18408 states, 18407 states have (on average 3.5227359156842506) internal successors, (64843), 18407 states have internal predecessors, (64843), 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) [2022-03-03 19:45:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18408 states to 18408 states and 64843 transitions. [2022-03-03 19:45:20,929 INFO L78 Accepts]: Start accepts. Automaton has 18408 states and 64843 transitions. Word has length 34 [2022-03-03 19:45:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:45:20,930 INFO L470 AbstractCegarLoop]: Abstraction has 18408 states and 64843 transitions. [2022-03-03 19:45:20,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 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) [2022-03-03 19:45:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 18408 states and 64843 transitions. [2022-03-03 19:45:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:45:20,961 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:45:20,961 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:45:20,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 19:45:21,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:45:21,162 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:45:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:45:21,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581361, now seen corresponding path program 33 times [2022-03-03 19:45:21,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:45:21,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876112212] [2022-03-03 19:45:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:45:21,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:45:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:45:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:45:21,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:45:21,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876112212] [2022-03-03 19:45:21,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876112212] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:45:21,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516127706] [2022-03-03 19:45:21,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:45:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:45:21,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:45:21,590 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:45:21,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 19:45:21,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 19:45:21,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:45:21,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-03 19:45:21,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:45:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:45:22,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:45:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:45:25,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516127706] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:45:25,266 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:45:25,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-03-03 19:45:25,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306466179] [2022-03-03 19:45:25,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:45:25,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 19:45:25,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:45:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 19:45:25,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2038, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 19:45:25,268 INFO L87 Difference]: Start difference. First operand 18408 states and 64843 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 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) [2022-03-03 19:45:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:45:43,510 INFO L93 Difference]: Finished difference Result 39425 states and 133315 transitions. [2022-03-03 19:45:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-03-03 19:45:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 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 36 [2022-03-03 19:45:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:45:43,627 INFO L225 Difference]: With dead ends: 39425 [2022-03-03 19:45:43,628 INFO L226 Difference]: Without dead ends: 39171 [2022-03-03 19:45:43,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13482 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=5776, Invalid=30896, Unknown=0, NotChecked=0, Total=36672 [2022-03-03 19:45:43,630 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 928 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:45:43,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 596 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4462 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 19:45:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39171 states. [2022-03-03 19:45:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39171 to 20370. [2022-03-03 19:45:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20370 states, 20369 states have (on average 3.524424370366734) internal successors, (71789), 20369 states have internal predecessors, (71789), 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) [2022-03-03 19:45:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20370 states to 20370 states and 71789 transitions. [2022-03-03 19:45:44,376 INFO L78 Accepts]: Start accepts. Automaton has 20370 states and 71789 transitions. Word has length 36 [2022-03-03 19:45:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:45:44,376 INFO L470 AbstractCegarLoop]: Abstraction has 20370 states and 71789 transitions. [2022-03-03 19:45:44,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 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) [2022-03-03 19:45:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 20370 states and 71789 transitions. [2022-03-03 19:45:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:45:44,412 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:45:44,412 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:45:44,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 19:45:44,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:45:44,613 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:45:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:45:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash 705856911, now seen corresponding path program 34 times [2022-03-03 19:45:44,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:45:44,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837164752] [2022-03-03 19:45:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:45:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:45:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:45:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:45:44,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:45:44,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837164752] [2022-03-03 19:45:44,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837164752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:45:44,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518253346] [2022-03-03 19:45:44,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:45:44,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:45:44,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:45:44,991 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:45:44,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 19:45:45,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:45:45,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:45:45,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:45:45,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:45:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:45:46,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:45:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:45:50,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518253346] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:45:50,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:45:50,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2022-03-03 19:45:50,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989825821] [2022-03-03 19:45:50,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:45:50,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 19:45:50,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:45:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 19:45:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2203, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:45:50,284 INFO L87 Difference]: Start difference. First operand 20370 states and 71789 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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) [2022-03-03 19:46:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:46:15,255 INFO L93 Difference]: Finished difference Result 37640 states and 127007 transitions. [2022-03-03 19:46:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-03 19:46:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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 36 [2022-03-03 19:46:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:46:15,359 INFO L225 Difference]: With dead ends: 37640 [2022-03-03 19:46:15,360 INFO L226 Difference]: Without dead ends: 37431 [2022-03-03 19:46:15,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10801 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=5044, Invalid=24712, Unknown=0, NotChecked=0, Total=29756 [2022-03-03 19:46:15,361 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 749 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:46:15,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 810 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-03 19:46:15,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37431 states. [2022-03-03 19:46:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37431 to 22320. [2022-03-03 19:46:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22320 states, 22319 states have (on average 3.5096554505130158) internal successors, (78332), 22319 states have internal predecessors, (78332), 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) [2022-03-03 19:46:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22320 states to 22320 states and 78332 transitions. [2022-03-03 19:46:16,011 INFO L78 Accepts]: Start accepts. Automaton has 22320 states and 78332 transitions. Word has length 36 [2022-03-03 19:46:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:46:16,011 INFO L470 AbstractCegarLoop]: Abstraction has 22320 states and 78332 transitions. [2022-03-03 19:46:16,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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) [2022-03-03 19:46:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 22320 states and 78332 transitions. [2022-03-03 19:46:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:46:16,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:46:16,050 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:46:16,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-03 19:46:16,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 19:46:16,251 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:46:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:46:16,252 INFO L85 PathProgramCache]: Analyzing trace with hash -132070257, now seen corresponding path program 35 times [2022-03-03 19:46:16,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:46:16,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052280680] [2022-03-03 19:46:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:46:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:46:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:46:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 19:46:16,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:46:16,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052280680] [2022-03-03 19:46:16,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052280680] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:46:16,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429718068] [2022-03-03 19:46:16,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:46:16,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:46:16,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:46:16,604 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:46:16,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 19:46:16,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:46:16,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:46:16,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:46:16,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:46:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:46:17,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:46:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:46:20,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429718068] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:46:20,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:46:20,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-03-03 19:46:20,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558186538] [2022-03-03 19:46:20,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:46:20,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-03 19:46:20,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:46:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-03 19:46:20,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2297, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 19:46:20,689 INFO L87 Difference]: Start difference. First operand 22320 states and 78332 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 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) [2022-03-03 19:47:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:47:00,406 INFO L93 Difference]: Finished difference Result 36818 states and 123722 transitions. [2022-03-03 19:47:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-03-03 19:47:00,406 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 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 36 [2022-03-03 19:47:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:47:00,514 INFO L225 Difference]: With dead ends: 36818 [2022-03-03 19:47:00,514 INFO L226 Difference]: Without dead ends: 36383 [2022-03-03 19:47:00,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16703 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=7341, Invalid=37815, Unknown=0, NotChecked=0, Total=45156 [2022-03-03 19:47:00,516 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1076 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:47:00,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1033 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-03 19:47:00,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36383 states. [2022-03-03 19:47:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36383 to 22991. [2022-03-03 19:47:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.5024358416702914) internal successors, (80521), 22990 states have internal predecessors, (80521), 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) [2022-03-03 19:47:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 80521 transitions. [2022-03-03 19:47:01,126 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 80521 transitions. Word has length 36 [2022-03-03 19:47:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:47:01,126 INFO L470 AbstractCegarLoop]: Abstraction has 22991 states and 80521 transitions. [2022-03-03 19:47:01,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 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) [2022-03-03 19:47:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 80521 transitions. [2022-03-03 19:47:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:47:01,164 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:47:01,164 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:47:01,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 19:47:01,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-03 19:47:01,365 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:47:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:47:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash 165942351, now seen corresponding path program 36 times [2022-03-03 19:47:01,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:47:01,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652615280] [2022-03-03 19:47:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:47:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:47:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:47:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:47:01,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:47:01,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652615280] [2022-03-03 19:47:01,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652615280] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:47:01,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110615946] [2022-03-03 19:47:01,793 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:47:01,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:47:01,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:47:01,794 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:47:01,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 19:47:01,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 19:47:01,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:47:01,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:47:01,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:47:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:47:02,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:47:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:47:05,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110615946] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:47:05,761 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:47:05,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 48 [2022-03-03 19:47:05,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963452446] [2022-03-03 19:47:05,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:47:05,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-03 19:47:05,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:47:05,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-03 19:47:05,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1978, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 19:47:05,762 INFO L87 Difference]: Start difference. First operand 22991 states and 80521 transitions. Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 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) [2022-03-03 19:47:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:47:25,273 INFO L93 Difference]: Finished difference Result 37235 states and 125952 transitions. [2022-03-03 19:47:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-03 19:47:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 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 36 [2022-03-03 19:47:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:47:25,380 INFO L225 Difference]: With dead ends: 37235 [2022-03-03 19:47:25,381 INFO L226 Difference]: Without dead ends: 36955 [2022-03-03 19:47:25,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10045 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=4219, Invalid=24851, Unknown=0, NotChecked=0, Total=29070 [2022-03-03 19:47:25,383 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 857 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:47:25,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 579 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 19:47:25,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36955 states. [2022-03-03 19:47:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36955 to 23455. [2022-03-03 19:47:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23455 states, 23454 states have (on average 3.4936471390807537) internal successors, (81940), 23454 states have internal predecessors, (81940), 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) [2022-03-03 19:47:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 81940 transitions. [2022-03-03 19:47:26,109 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 81940 transitions. Word has length 36 [2022-03-03 19:47:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:47:26,109 INFO L470 AbstractCegarLoop]: Abstraction has 23455 states and 81940 transitions. [2022-03-03 19:47:26,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 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) [2022-03-03 19:47:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 81940 transitions. [2022-03-03 19:47:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:47:26,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:47:26,151 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:47:26,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 19:47:26,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 19:47:26,351 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:47:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:47:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1442269323, now seen corresponding path program 37 times [2022-03-03 19:47:26,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:47:26,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35888201] [2022-03-03 19:47:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:47:26,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:47:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:47:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:47:26,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:47:26,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35888201] [2022-03-03 19:47:26,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35888201] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:47:26,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989830819] [2022-03-03 19:47:26,687 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:47:26,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:47:26,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:47:26,690 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:47:26,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 19:47:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:47:26,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:47:26,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:47:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:47:27,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:47:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:47:30,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989830819] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:47:30,362 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:47:30,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-03-03 19:47:30,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977521592] [2022-03-03 19:47:30,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:47:30,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-03 19:47:30,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:47:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-03 19:47:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=2327, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 19:47:30,363 INFO L87 Difference]: Start difference. First operand 23455 states and 81940 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 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) [2022-03-03 19:48:07,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:48:07,604 INFO L93 Difference]: Finished difference Result 39539 states and 132003 transitions. [2022-03-03 19:48:07,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-03-03 19:48:07,605 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 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 36 [2022-03-03 19:48:07,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:48:07,706 INFO L225 Difference]: With dead ends: 39539 [2022-03-03 19:48:07,706 INFO L226 Difference]: Without dead ends: 39108 [2022-03-03 19:48:07,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21216 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=8717, Invalid=45805, Unknown=0, NotChecked=0, Total=54522 [2022-03-03 19:48:07,709 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1081 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 3971 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:48:07,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 1164 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3971 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-03 19:48:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39108 states. [2022-03-03 19:48:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39108 to 23865. [2022-03-03 19:48:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23865 states, 23864 states have (on average 3.4881830372108618) internal successors, (83242), 23864 states have internal predecessors, (83242), 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) [2022-03-03 19:48:08,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23865 states to 23865 states and 83242 transitions. [2022-03-03 19:48:08,385 INFO L78 Accepts]: Start accepts. Automaton has 23865 states and 83242 transitions. Word has length 36 [2022-03-03 19:48:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:48:08,385 INFO L470 AbstractCegarLoop]: Abstraction has 23865 states and 83242 transitions. [2022-03-03 19:48:08,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 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) [2022-03-03 19:48:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 23865 states and 83242 transitions. [2022-03-03 19:48:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:48:08,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:48:08,425 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:48:08,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-03 19:48:08,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 19:48:08,626 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:48:08,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:48:08,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1340971121, now seen corresponding path program 38 times [2022-03-03 19:48:08,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:48:08,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936727530] [2022-03-03 19:48:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:48:08,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:48:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:48:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:09,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:48:09,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936727530] [2022-03-03 19:48:09,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936727530] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:48:09,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491812542] [2022-03-03 19:48:09,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:48:09,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:48:09,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:48:09,024 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:48:09,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 19:48:09,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:48:09,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:48:09,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:48:09,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:48:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:10,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:48:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:11,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491812542] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:48:11,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:48:11,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 51 [2022-03-03 19:48:11,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176570594] [2022-03-03 19:48:11,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:48:11,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 19:48:11,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:48:11,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 19:48:11,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2191, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:48:11,876 INFO L87 Difference]: Start difference. First operand 23865 states and 83242 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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) [2022-03-03 19:48:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:48:33,001 INFO L93 Difference]: Finished difference Result 46254 states and 153652 transitions. [2022-03-03 19:48:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2022-03-03 19:48:33,003 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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 36 [2022-03-03 19:48:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:48:33,136 INFO L225 Difference]: With dead ends: 46254 [2022-03-03 19:48:33,137 INFO L226 Difference]: Without dead ends: 45963 [2022-03-03 19:48:33,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30452 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=11343, Invalid=62913, Unknown=0, NotChecked=0, Total=74256 [2022-03-03 19:48:33,140 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1310 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:48:33,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 792 Invalid, 5766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-03 19:48:33,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45963 states. [2022-03-03 19:48:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45963 to 24356. [2022-03-03 19:48:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24356 states, 24355 states have (on average 3.4868815438308354) internal successors, (84923), 24355 states have internal predecessors, (84923), 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) [2022-03-03 19:48:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24356 states to 24356 states and 84923 transitions. [2022-03-03 19:48:34,006 INFO L78 Accepts]: Start accepts. Automaton has 24356 states and 84923 transitions. Word has length 36 [2022-03-03 19:48:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:48:34,006 INFO L470 AbstractCegarLoop]: Abstraction has 24356 states and 84923 transitions. [2022-03-03 19:48:34,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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) [2022-03-03 19:48:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 24356 states and 84923 transitions. [2022-03-03 19:48:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:48:34,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:48:34,046 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:48:34,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-03 19:48:34,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:48:34,247 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:48:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:48:34,248 INFO L85 PathProgramCache]: Analyzing trace with hash -883763825, now seen corresponding path program 39 times [2022-03-03 19:48:34,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:48:34,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381820414] [2022-03-03 19:48:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:48:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:48:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:48:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:34,597 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:48:34,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381820414] [2022-03-03 19:48:34,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381820414] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:48:34,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905841294] [2022-03-03 19:48:34,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:48:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:48:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:48:34,599 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:48:34,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 19:48:34,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:48:34,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:48:34,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:48:34,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:48:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:35,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:48:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:36,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905841294] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:48:36,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:48:36,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-03 19:48:36,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360136889] [2022-03-03 19:48:36,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:48:36,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 19:48:36,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:48:36,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 19:48:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2228, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:48:36,617 INFO L87 Difference]: Start difference. First operand 24356 states and 84923 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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) [2022-03-03 19:48:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:48:53,958 INFO L93 Difference]: Finished difference Result 47727 states and 157820 transitions. [2022-03-03 19:48:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-03-03 19:48:53,959 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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 36 [2022-03-03 19:48:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:48:54,067 INFO L225 Difference]: With dead ends: 47727 [2022-03-03 19:48:54,067 INFO L226 Difference]: Without dead ends: 47130 [2022-03-03 19:48:54,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22222 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=8220, Invalid=50102, Unknown=0, NotChecked=0, Total=58322 [2022-03-03 19:48:54,071 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1475 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 6996 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 7641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 6996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:48:54,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 893 Invalid, 7641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 6996 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-03-03 19:48:54,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47130 states. [2022-03-03 19:48:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47130 to 24572. [2022-03-03 19:48:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24572 states, 24571 states have (on average 3.482560742338529) internal successors, (85570), 24571 states have internal predecessors, (85570), 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) [2022-03-03 19:48:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24572 states to 24572 states and 85570 transitions. [2022-03-03 19:48:54,866 INFO L78 Accepts]: Start accepts. Automaton has 24572 states and 85570 transitions. Word has length 36 [2022-03-03 19:48:54,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:48:54,866 INFO L470 AbstractCegarLoop]: Abstraction has 24572 states and 85570 transitions. [2022-03-03 19:48:54,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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) [2022-03-03 19:48:54,866 INFO L276 IsEmpty]: Start isEmpty. Operand 24572 states and 85570 transitions. [2022-03-03 19:48:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:48:54,906 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:48:54,906 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:48:54,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 19:48:55,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-03 19:48:55,107 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:48:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:48:55,107 INFO L85 PathProgramCache]: Analyzing trace with hash 231013519, now seen corresponding path program 40 times [2022-03-03 19:48:55,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:48:55,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426061370] [2022-03-03 19:48:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:48:55,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:48:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:48:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:55,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:48:55,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426061370] [2022-03-03 19:48:55,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426061370] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:48:55,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140623713] [2022-03-03 19:48:55,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:48:55,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:48:55,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:48:55,500 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:48:55,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 19:48:55,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:48:55,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:48:55,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:48:55,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:48:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:56,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:48:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:48:58,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140623713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:48:58,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:48:58,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-03-03 19:48:58,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333393058] [2022-03-03 19:48:58,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:48:58,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-03 19:48:58,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:48:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-03 19:48:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2513, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 19:48:58,059 INFO L87 Difference]: Start difference. First operand 24572 states and 85570 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 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) [2022-03-03 19:49:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:49:21,191 INFO L93 Difference]: Finished difference Result 51559 states and 166281 transitions. [2022-03-03 19:49:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-03-03 19:49:21,191 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 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 36 [2022-03-03 19:49:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:49:21,331 INFO L225 Difference]: With dead ends: 51559 [2022-03-03 19:49:21,332 INFO L226 Difference]: Without dead ends: 50974 [2022-03-03 19:49:21,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36935 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=13139, Invalid=73591, Unknown=0, NotChecked=0, Total=86730 [2022-03-03 19:49:21,335 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 1672 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 4645 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 5498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 4645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:49:21,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 1087 Invalid, 5498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 4645 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-03 19:49:21,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50974 states. [2022-03-03 19:49:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50974 to 25902. [2022-03-03 19:49:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25902 states, 25901 states have (on average 3.4722983668584226) internal successors, (89936), 25901 states have internal predecessors, (89936), 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) [2022-03-03 19:49:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25902 states to 25902 states and 89936 transitions. [2022-03-03 19:49:22,225 INFO L78 Accepts]: Start accepts. Automaton has 25902 states and 89936 transitions. Word has length 36 [2022-03-03 19:49:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:49:22,225 INFO L470 AbstractCegarLoop]: Abstraction has 25902 states and 89936 transitions. [2022-03-03 19:49:22,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 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) [2022-03-03 19:49:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 25902 states and 89936 transitions. [2022-03-03 19:49:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:49:22,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:49:22,272 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:49:22,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-03 19:49:22,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-03 19:49:22,472 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:49:22,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:49:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash 534588811, now seen corresponding path program 41 times [2022-03-03 19:49:22,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:49:22,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908288490] [2022-03-03 19:49:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:49:22,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:49:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:49:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:49:22,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:49:22,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908288490] [2022-03-03 19:49:22,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908288490] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:49:22,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492533769] [2022-03-03 19:49:22,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:49:22,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:49:22,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:49:22,865 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:49:22,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 19:49:22,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:49:22,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:49:22,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 19:49:22,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:49:24,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:49:24,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:49:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:49:25,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492533769] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:49:25,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:49:25,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-03-03 19:49:25,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662626253] [2022-03-03 19:49:25,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:49:25,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-03 19:49:25,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:49:25,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-03 19:49:25,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2512, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 19:49:25,449 INFO L87 Difference]: Start difference. First operand 25902 states and 89936 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 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) [2022-03-03 19:49:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:49:49,824 INFO L93 Difference]: Finished difference Result 53208 states and 171321 transitions. [2022-03-03 19:49:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2022-03-03 19:49:49,824 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 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 36 [2022-03-03 19:49:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:49:49,953 INFO L225 Difference]: With dead ends: 53208 [2022-03-03 19:49:49,953 INFO L226 Difference]: Without dead ends: 52586 [2022-03-03 19:49:49,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46434 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=16388, Invalid=90868, Unknown=0, NotChecked=0, Total=107256 [2022-03-03 19:49:49,958 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1836 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 5701 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 6726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 5701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-03 19:49:49,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1836 Valid, 1118 Invalid, 6726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 5701 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-03-03 19:49:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52586 states. [2022-03-03 19:49:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52586 to 26033. [2022-03-03 19:49:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26033 states, 26032 states have (on average 3.4720728334357713) internal successors, (90385), 26032 states have internal predecessors, (90385), 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) [2022-03-03 19:49:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26033 states to 26033 states and 90385 transitions. [2022-03-03 19:49:50,831 INFO L78 Accepts]: Start accepts. Automaton has 26033 states and 90385 transitions. Word has length 36 [2022-03-03 19:49:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:49:50,831 INFO L470 AbstractCegarLoop]: Abstraction has 26033 states and 90385 transitions. [2022-03-03 19:49:50,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 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) [2022-03-03 19:49:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 26033 states and 90385 transitions. [2022-03-03 19:49:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:49:50,879 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:49:50,879 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:49:50,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-03 19:49:51,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-03 19:49:51,080 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:49:51,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:49:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1576431985, now seen corresponding path program 42 times [2022-03-03 19:49:51,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:49:51,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869081623] [2022-03-03 19:49:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:49:51,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:49:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:49:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:49:51,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:49:51,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869081623] [2022-03-03 19:49:51,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869081623] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:49:51,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857579615] [2022-03-03 19:49:51,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:49:51,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:49:51,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:49:51,393 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:49:51,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 19:49:51,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:49:51,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:49:51,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 19:49:51,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:49:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:49:52,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:49:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:49:53,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857579615] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:49:53,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:49:53,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-03 19:49:53,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477458808] [2022-03-03 19:49:53,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:49:53,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 19:49:53,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:49:53,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 19:49:53,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2184, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 19:49:53,684 INFO L87 Difference]: Start difference. First operand 26033 states and 90385 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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) [2022-03-03 19:50:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:50:13,260 INFO L93 Difference]: Finished difference Result 53222 states and 174091 transitions. [2022-03-03 19:50:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2022-03-03 19:50:13,261 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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 36 [2022-03-03 19:50:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:50:13,405 INFO L225 Difference]: With dead ends: 53222 [2022-03-03 19:50:13,405 INFO L226 Difference]: Without dead ends: 52732 [2022-03-03 19:50:13,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34683 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=13109, Invalid=70701, Unknown=0, NotChecked=0, Total=83810 [2022-03-03 19:50:13,409 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 1961 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 6771 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 7704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 6771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:50:13,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1019 Invalid, 7704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 6771 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-03-03 19:50:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52732 states. [2022-03-03 19:50:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52732 to 25812. [2022-03-03 19:50:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25812 states, 25811 states have (on average 3.473247840068188) internal successors, (89648), 25811 states have internal predecessors, (89648), 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) [2022-03-03 19:50:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25812 states to 25812 states and 89648 transitions. [2022-03-03 19:50:14,322 INFO L78 Accepts]: Start accepts. Automaton has 25812 states and 89648 transitions. Word has length 36 [2022-03-03 19:50:14,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:50:14,322 INFO L470 AbstractCegarLoop]: Abstraction has 25812 states and 89648 transitions. [2022-03-03 19:50:14,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 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) [2022-03-03 19:50:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 25812 states and 89648 transitions. [2022-03-03 19:50:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-03 19:50:14,371 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:50:14,371 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:50:14,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 19:50:14,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:50:14,572 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:50:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:50:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash 24674187, now seen corresponding path program 43 times [2022-03-03 19:50:14,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:50:14,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643683809] [2022-03-03 19:50:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:50:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:50:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:50:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:50:14,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:50:14,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643683809] [2022-03-03 19:50:14,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643683809] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:50:14,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469411354] [2022-03-03 19:50:14,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:50:14,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:50:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:50:14,943 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:50:14,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 19:50:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:50:14,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 19:50:14,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:50:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:50:16,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:50:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:50:19,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469411354] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:50:19,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:50:19,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-03-03 19:50:19,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751175743] [2022-03-03 19:50:19,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:50:19,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-03 19:50:19,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:50:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-03 19:50:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2333, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 19:50:19,473 INFO L87 Difference]: Start difference. First operand 25812 states and 89648 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 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) Received shutdown request... [2022-03-03 19:50:25,400 WARN L244 SmtUtils]: Removed 9 from assertion stack [2022-03-03 19:50:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 19:50:25,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1100, Invalid=5220, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 19:50:25,401 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 299 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:50:25,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 18 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:50:25,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-03 19:50:25,404 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 19:50:25,407 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 19:50:25,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 19:50:25,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:50:25,603 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 41 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 401ms.. [2022-03-03 19:50:25,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-03 19:50:25,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-03 19:50:25,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-03 19:50:25,607 INFO L732 BasicCegarLoop]: Path program histogram: [43, 1, 1, 1] [2022-03-03 19:50:25,609 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 19:50:25,609 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 19:50:25,611 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 07:50:25 BasicIcfg [2022-03-03 19:50:25,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 19:50:25,611 INFO L158 Benchmark]: Toolchain (without parser) took 704886.65ms. Allocated memory was 199.2MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 165.3MB in the beginning and 877.1MB in the end (delta: -711.8MB). Peak memory consumption was 865.0MB. Max. memory is 8.0GB. [2022-03-03 19:50:25,611 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 199.2MB. Free memory is still 166.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:50:25,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.62ms. Allocated memory is still 199.2MB. Free memory was 165.2MB in the beginning and 163.7MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-03 19:50:25,611 INFO L158 Benchmark]: Boogie Preprocessor took 16.66ms. Allocated memory is still 199.2MB. Free memory was 163.7MB in the beginning and 162.8MB in the end (delta: 899.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:50:25,612 INFO L158 Benchmark]: RCFGBuilder took 272.47ms. Allocated memory is still 199.2MB. Free memory was 162.6MB in the beginning and 152.5MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-03 19:50:25,612 INFO L158 Benchmark]: TraceAbstraction took 704571.45ms. Allocated memory was 199.2MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 152.0MB in the beginning and 877.1MB in the end (delta: -725.1MB). Peak memory consumption was 850.3MB. Max. memory is 8.0GB. [2022-03-03 19:50:25,612 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 0.13ms. Allocated memory is still 199.2MB. Free memory is still 166.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.62ms. Allocated memory is still 199.2MB. Free memory was 165.2MB in the beginning and 163.7MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.66ms. Allocated memory is still 199.2MB. Free memory was 163.7MB in the beginning and 162.8MB in the end (delta: 899.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 272.47ms. Allocated memory is still 199.2MB. Free memory was 162.6MB in the beginning and 152.5MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 704571.45ms. Allocated memory was 199.2MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 152.0MB in the beginning and 877.1MB in the end (delta: -725.1MB). Peak memory consumption was 850.3MB. 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 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 41 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 401ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 41 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 401ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 41 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 401ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 41 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 134 for 401ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 704.5s, OverallIterations: 46, TraceHistogramMax: 4, PathProgramHistogramMax: 43, EmptinessCheckTime: 0.9s, AutomataDifference: 545.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34321 SdHoareTripleChecker+Valid, 75.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34321 mSDsluCounter, 22319 SdHoareTripleChecker+Invalid, 64.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29888 mSDsCounter, 17582 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 138343 IncrementalHoareTripleChecker+Invalid, 155925 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17582 mSolverCounterUnsat, 1102 mSDtfsCounter, 138343 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8364 GetRequests, 1639 SyntacticMatches, 104 SemanticMatches, 6620 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495656 ImplicationChecksByTransitivity, 500.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26033occurred in iteration=44, InterpolantAutomatonStates: 5878, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.7s AutomataMinimizationTime, 45 MinimizatonAttempts, 408538 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 132.9s InterpolantComputationTime, 2963 NumberOfCodeBlocks, 2963 NumberOfCodeBlocksAsserted, 171 NumberOfCheckSat, 4265 ConstructedInterpolants, 0 QuantifiedInterpolants, 155859 SizeOfPredicates, 505 NumberOfNonLiveVariables, 2650 ConjunctsInSsa, 816 ConjunctsInUnsatCore, 130 InterpolantComputations, 4 PerfectInterpolantSequences, 96/1878 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown