/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/prod-cons.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 00:55:34,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 00:55:34,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 00:55:34,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-11 00:55:34,213 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 [2022-02-11 00:55:34,234 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 00:55:34,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 00:55:34,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 00:55:34,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 00:55:34,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 00:55:34,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 00:55:34,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 00:55:34,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 00:55:34,237 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 00:55:34,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 00:55:34,237 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 00:55:34,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 00:55:34,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 00:55:34,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 00:55:34,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 00:55:34,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:55:34,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 00:55:34,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 00:55:34,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 00:55:34,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 00:55:34,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 00:55:34,240 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 00:55:34,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 00:55:34,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 00:55:34,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 00:55:34,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 00:55:34,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 00:55:34,430 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 00:55:34,431 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 00:55:34,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/prod-cons.wvr.bpl [2022-02-11 00:55:34,432 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/prod-cons.wvr.bpl' [2022-02-11 00:55:34,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 00:55:34,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 00:55:34,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 00:55:34,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 00:55:34,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 00:55:34,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,480 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 00:55:34,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 00:55:34,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 00:55:34,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 00:55:34,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 00:55:34,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 00:55:34,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 00:55:34,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 00:55:34,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 00:55:34,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/1) ... [2022-02-11 00:55:34,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:55:34,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:34,526 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) [2022-02-11 00:55:34,543 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 [2022-02-11 00:55:34,557 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 00:55:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 00:55:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 00:55:34,557 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 00:55:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 00:55:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 00:55:34,557 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 00:55:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 00:55:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 00:55:34,557 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-11 00:55:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-11 00:55:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-11 00:55:34,558 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-11 00:55:34,591 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 00:55:34,592 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 00:55:34,668 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 00:55:34,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 00:55:34,678 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-11 00:55:34,679 INFO L202 PluginConnector]: Adding new model prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:55:34 BoogieIcfgContainer [2022-02-11 00:55:34,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 00:55:34,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 00:55:34,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 00:55:34,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 00:55:34,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:55:34" (1/2) ... [2022-02-11 00:55:34,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aeeee39 and model type prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 12:55:34, skipping insertion in model container [2022-02-11 00:55:34,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:55:34" (2/2) ... [2022-02-11 00:55:34,685 INFO L112 eAbstractionObserver]: Analyzing ICFG prod-cons.wvr.bpl [2022-02-11 00:55:34,688 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 00:55:34,688 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 00:55:34,688 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 00:55:34,689 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 00:55:34,728 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-11 00:55:34,756 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 00:55:34,761 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, 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 [2022-02-11 00:55:34,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-11 00:55:34,767 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 30 transitions, 84 flow [2022-02-11 00:55:34,801 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 132 states, 131 states have (on average 2.5877862595419847) internal successors, (339), 131 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 131 states have (on average 2.5877862595419847) internal successors, (339), 131 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-11 00:55:34,811 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:34,812 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:34,812 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:55:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:34,816 INFO L85 PathProgramCache]: Analyzing trace with hash 785752709, now seen corresponding path program 1 times [2022-02-11 00:55:34,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:34,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479287851] [2022-02-11 00:55:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:34,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:34,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:34,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479287851] [2022-02-11 00:55:34,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479287851] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:55:34,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:55:34,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:55:34,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140684400] [2022-02-11 00:55:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:55:34,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 00:55:34,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 00:55:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:55:34,972 INFO L87 Difference]: Start difference. First operand has 132 states, 131 states have (on average 2.5877862595419847) internal successors, (339), 131 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:35,042 INFO L93 Difference]: Finished difference Result 172 states and 413 transitions. [2022-02-11 00:55:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 00:55:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-02-11 00:55:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:35,053 INFO L225 Difference]: With dead ends: 172 [2022-02-11 00:55:35,053 INFO L226 Difference]: Without dead ends: 109 [2022-02-11 00:55:35,055 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:55:35,057 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:35,058 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 25 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:55:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-11 00:55:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-02-11 00:55:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.3055555555555554) internal successors, (249), 108 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 249 transitions. [2022-02-11 00:55:35,127 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 249 transitions. Word has length 19 [2022-02-11 00:55:35,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:35,128 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 249 transitions. [2022-02-11 00:55:35,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 249 transitions. [2022-02-11 00:55:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-11 00:55:35,133 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:35,133 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:35,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 00:55:35,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:55:35,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:35,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1380410419, now seen corresponding path program 2 times [2022-02-11 00:55:35,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:35,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110933377] [2022-02-11 00:55:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:35,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:35,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:35,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110933377] [2022-02-11 00:55:35,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110933377] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:55:35,183 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:55:35,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:55:35,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296587412] [2022-02-11 00:55:35,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:55:35,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:55:35,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:55:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:55:35,186 INFO L87 Difference]: Start difference. First operand 109 states and 249 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:35,242 INFO L93 Difference]: Finished difference Result 190 states and 436 transitions. [2022-02-11 00:55:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:55:35,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-02-11 00:55:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:35,245 INFO L225 Difference]: With dead ends: 190 [2022-02-11 00:55:35,245 INFO L226 Difference]: Without dead ends: 142 [2022-02-11 00:55:35,245 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:55:35,246 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:35,247 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 27 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:55:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-02-11 00:55:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-02-11 00:55:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.3404255319148937) internal successors, (330), 141 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 330 transitions. [2022-02-11 00:55:35,258 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 330 transitions. Word has length 19 [2022-02-11 00:55:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:35,258 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 330 transitions. [2022-02-11 00:55:35,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 330 transitions. [2022-02-11 00:55:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 00:55:35,260 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:35,260 INFO L515 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] [2022-02-11 00:55:35,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-11 00:55:35,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:55:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1081760350, now seen corresponding path program 1 times [2022-02-11 00:55:35,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:35,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228440715] [2022-02-11 00:55:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:35,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:35,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228440715] [2022-02-11 00:55:35,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228440715] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:55:35,295 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:55:35,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:55:35,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211806033] [2022-02-11 00:55:35,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:55:35,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 00:55:35,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:35,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 00:55:35,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:55:35,296 INFO L87 Difference]: Start difference. First operand 142 states and 330 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:35,311 INFO L93 Difference]: Finished difference Result 164 states and 373 transitions. [2022-02-11 00:55:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 00:55:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-11 00:55:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:35,313 INFO L225 Difference]: With dead ends: 164 [2022-02-11 00:55:35,313 INFO L226 Difference]: Without dead ends: 152 [2022-02-11 00:55:35,313 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:55:35,314 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:35,314 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:55:35,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-02-11 00:55:35,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-02-11 00:55:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.3178807947019866) internal successors, (350), 151 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 350 transitions. [2022-02-11 00:55:35,324 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 350 transitions. Word has length 22 [2022-02-11 00:55:35,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:35,325 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 350 transitions. [2022-02-11 00:55:35,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 350 transitions. [2022-02-11 00:55:35,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:55:35,326 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:35,326 INFO L515 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] [2022-02-11 00:55:35,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-11 00:55:35,327 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:55:35,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:35,327 INFO L85 PathProgramCache]: Analyzing trace with hash -220317154, now seen corresponding path program 1 times [2022-02-11 00:55:35,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:35,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620673082] [2022-02-11 00:55:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:35,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:35,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:35,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620673082] [2022-02-11 00:55:35,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620673082] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:35,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152566934] [2022-02-11 00:55:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:35,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:35,510 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) [2022-02-11 00:55:35,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-11 00:55:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:35,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 00:55:35,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:35,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 00:55:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:35,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:36,002 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:55:36,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2022-02-11 00:55:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:36,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152566934] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:36,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:36,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-11 00:55:36,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307544355] [2022-02-11 00:55:36,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:36,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:55:36,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:36,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:55:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:55:36,135 INFO L87 Difference]: Start difference. First operand 152 states and 350 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:36,548 INFO L93 Difference]: Finished difference Result 358 states and 819 transitions. [2022-02-11 00:55:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-11 00:55:36,548 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 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 25 [2022-02-11 00:55:36,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:36,550 INFO L225 Difference]: With dead ends: 358 [2022-02-11 00:55:36,550 INFO L226 Difference]: Without dead ends: 268 [2022-02-11 00:55:36,551 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:55:36,551 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 251 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:36,552 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 115 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:55:36,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-02-11 00:55:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 185. [2022-02-11 00:55:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.342391304347826) internal successors, (431), 184 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 431 transitions. [2022-02-11 00:55:36,577 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 431 transitions. Word has length 25 [2022-02-11 00:55:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:36,577 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 431 transitions. [2022-02-11 00:55:36,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 431 transitions. [2022-02-11 00:55:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 00:55:36,578 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:36,578 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:36,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-11 00:55:36,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:36,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:55:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1335000105, now seen corresponding path program 2 times [2022-02-11 00:55:36,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:36,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177116796] [2022-02-11 00:55:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:36,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:36,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:36,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177116796] [2022-02-11 00:55:36,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177116796] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:36,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183288311] [2022-02-11 00:55:36,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:55:36,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:36,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:36,843 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) [2022-02-11 00:55:36,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-11 00:55:36,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:55:36,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:36,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-11 00:55:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:36,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:36,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183288311] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:36,973 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:36,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-02-11 00:55:36,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871456040] [2022-02-11 00:55:36,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:36,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:55:36,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:55:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:55:36,975 INFO L87 Difference]: Start difference. First operand 185 states and 431 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:36,997 INFO L93 Difference]: Finished difference Result 496 states and 1143 transitions. [2022-02-11 00:55:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:55:36,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 [2022-02-11 00:55:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:37,006 INFO L225 Difference]: With dead ends: 496 [2022-02-11 00:55:37,006 INFO L226 Difference]: Without dead ends: 454 [2022-02-11 00:55:37,006 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:55:37,008 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:37,009 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 65 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:55:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-02-11 00:55:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 336. [2022-02-11 00:55:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.4298507462686567) internal successors, (814), 335 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 814 transitions. [2022-02-11 00:55:37,033 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 814 transitions. Word has length 28 [2022-02-11 00:55:37,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:37,034 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 814 transitions. [2022-02-11 00:55:37,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 814 transitions. [2022-02-11 00:55:37,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:55:37,040 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:37,040 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:37,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-11 00:55:37,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:37,258 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:55:37,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash -528291211, now seen corresponding path program 3 times [2022-02-11 00:55:37,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:37,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680028315] [2022-02-11 00:55:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:37,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:37,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:37,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680028315] [2022-02-11 00:55:37,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680028315] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:37,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334765149] [2022-02-11 00:55:37,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:55:37,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:37,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:37,484 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) [2022-02-11 00:55:37,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-11 00:55:37,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:55:37,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:37,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:55:37,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:37,817 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 00:55:37,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2022-02-11 00:55:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:37,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:38,073 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 00:55:38,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 51 [2022-02-11 00:55:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:38,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334765149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:38,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:38,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2022-02-11 00:55:38,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554450372] [2022-02-11 00:55:38,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:38,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-11 00:55:38,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-11 00:55:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:55:38,274 INFO L87 Difference]: Start difference. First operand 336 states and 814 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:43,996 INFO L93 Difference]: Finished difference Result 2570 states and 6225 transitions. [2022-02-11 00:55:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-02-11 00:55:43,997 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 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 31 [2022-02-11 00:55:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:44,004 INFO L225 Difference]: With dead ends: 2570 [2022-02-11 00:55:44,004 INFO L226 Difference]: Without dead ends: 1697 [2022-02-11 00:55:44,026 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11757 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5243, Invalid=26977, Unknown=0, NotChecked=0, Total=32220 [2022-02-11 00:55:44,028 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 1193 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:44,029 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 512 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:55:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2022-02-11 00:55:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 421. [2022-02-11 00:55:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 2.4642857142857144) internal successors, (1035), 420 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1035 transitions. [2022-02-11 00:55:44,052 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1035 transitions. Word has length 31 [2022-02-11 00:55:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:44,053 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 1035 transitions. [2022-02-11 00:55:44,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1035 transitions. [2022-02-11 00:55:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:55:44,054 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:44,054 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:44,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-11 00:55:44,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:44,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:55:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:44,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1420855431, now seen corresponding path program 4 times [2022-02-11 00:55:44,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:44,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666658044] [2022-02-11 00:55:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:44,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:44,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:44,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666658044] [2022-02-11 00:55:44,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666658044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:44,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697375469] [2022-02-11 00:55:44,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:55:44,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:44,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:44,472 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) [2022-02-11 00:55:44,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-11 00:55:44,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:55:44,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:44,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:55:44,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:44,737 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 00:55:44,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2022-02-11 00:55:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:44,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:44,970 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 00:55:44,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 51 [2022-02-11 00:55:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:45,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697375469] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:45,169 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:45,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-02-11 00:55:45,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745463108] [2022-02-11 00:55:45,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:45,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 00:55:45,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 00:55:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-02-11 00:55:45,170 INFO L87 Difference]: Start difference. First operand 421 states and 1035 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:48,830 INFO L93 Difference]: Finished difference Result 2028 states and 4820 transitions. [2022-02-11 00:55:48,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-11 00:55:48,830 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 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 31 [2022-02-11 00:55:48,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:48,836 INFO L225 Difference]: With dead ends: 2028 [2022-02-11 00:55:48,837 INFO L226 Difference]: Without dead ends: 1858 [2022-02-11 00:55:48,845 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5973 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3143, Invalid=14413, Unknown=0, NotChecked=0, Total=17556 [2022-02-11 00:55:48,846 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 550 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:48,846 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 293 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:55:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2022-02-11 00:55:48,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 477. [2022-02-11 00:55:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 2.4978991596638656) internal successors, (1189), 476 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1189 transitions. [2022-02-11 00:55:48,863 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1189 transitions. Word has length 31 [2022-02-11 00:55:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:48,863 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 1189 transitions. [2022-02-11 00:55:48,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:48,863 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1189 transitions. [2022-02-11 00:55:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:55:48,864 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:48,864 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:48,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-11 00:55:49,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:49,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:55:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:49,081 INFO L85 PathProgramCache]: Analyzing trace with hash 256367733, now seen corresponding path program 5 times [2022-02-11 00:55:49,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:49,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454854161] [2022-02-11 00:55:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:49,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:49,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:49,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454854161] [2022-02-11 00:55:49,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454854161] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:49,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296496160] [2022-02-11 00:55:49,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:55:49,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:49,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:49,263 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) [2022-02-11 00:55:49,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-11 00:55:49,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:55:49,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:49,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:55:49,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:49,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:55:49,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:55:49,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-02-11 00:55:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:49,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:49,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:55:49,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:55:49,857 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:55:49,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 51 [2022-02-11 00:55:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:50,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296496160] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:50,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:50,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2022-02-11 00:55:50,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826918771] [2022-02-11 00:55:50,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:50,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-11 00:55:50,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:50,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-11 00:55:50,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:55:50,043 INFO L87 Difference]: Start difference. First operand 477 states and 1189 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:59,729 INFO L93 Difference]: Finished difference Result 6877 states and 16443 transitions. [2022-02-11 00:55:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2022-02-11 00:55:59,730 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 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 31 [2022-02-11 00:55:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:59,748 INFO L225 Difference]: With dead ends: 6877 [2022-02-11 00:55:59,749 INFO L226 Difference]: Without dead ends: 5277 [2022-02-11 00:55:59,756 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38288 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=13473, Invalid=70917, Unknown=0, NotChecked=0, Total=84390 [2022-02-11 00:55:59,757 INFO L934 BasicCegarLoop]: 61 mSDtfsCounter, 1278 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 2737 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 3667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:59,757 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 1016 Invalid, 3667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2737 Invalid, 0 Unknown, 323 Unchecked, 1.4s Time] [2022-02-11 00:55:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2022-02-11 00:55:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 959. [2022-02-11 00:55:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 2.6085594989561587) internal successors, (2499), 958 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2499 transitions. [2022-02-11 00:55:59,834 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2499 transitions. Word has length 31 [2022-02-11 00:55:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:59,835 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 2499 transitions. [2022-02-11 00:55:59,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2499 transitions. [2022-02-11 00:55:59,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:55:59,837 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:59,837 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:59,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-11 00:56:00,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:00,054 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:56:00,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash 693727769, now seen corresponding path program 6 times [2022-02-11 00:56:00,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:00,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999645722] [2022-02-11 00:56:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:00,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:56:00,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:00,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999645722] [2022-02-11 00:56:00,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999645722] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:00,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041370918] [2022-02-11 00:56:00,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:56:00,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:00,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:00,173 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) [2022-02-11 00:56:00,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-11 00:56:00,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:56:00,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:00,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:56:00,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:00,421 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 00:56:00,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2022-02-11 00:56:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:00,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:00,627 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 00:56:00,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 51 [2022-02-11 00:56:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:00,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041370918] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:00,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:00,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 31 [2022-02-11 00:56:00,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744996108] [2022-02-11 00:56:00,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:00,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 00:56:00,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 00:56:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-02-11 00:56:00,778 INFO L87 Difference]: Start difference. First operand 959 states and 2499 transitions. Second operand has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:05,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:05,755 INFO L93 Difference]: Finished difference Result 5655 states and 14099 transitions. [2022-02-11 00:56:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-02-11 00:56:05,756 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 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 31 [2022-02-11 00:56:05,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:05,775 INFO L225 Difference]: With dead ends: 5655 [2022-02-11 00:56:05,775 INFO L226 Difference]: Without dead ends: 5002 [2022-02-11 00:56:05,778 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16724 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6779, Invalid=32623, Unknown=0, NotChecked=0, Total=39402 [2022-02-11 00:56:05,780 INFO L934 BasicCegarLoop]: 67 mSDtfsCounter, 921 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:05,780 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 845 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:56:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2022-02-11 00:56:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 1343. [2022-02-11 00:56:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 2.615499254843517) internal successors, (3510), 1342 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 3510 transitions. [2022-02-11 00:56:05,829 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 3510 transitions. Word has length 31 [2022-02-11 00:56:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:05,829 INFO L470 AbstractCegarLoop]: Abstraction has 1343 states and 3510 transitions. [2022-02-11 00:56:05,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 3510 transitions. [2022-02-11 00:56:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:56:05,832 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:05,832 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:05,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-11 00:56:06,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:06,039 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:56:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2111481487, now seen corresponding path program 7 times [2022-02-11 00:56:06,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:06,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296789178] [2022-02-11 00:56:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:06,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:06,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296789178] [2022-02-11 00:56:06,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296789178] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:06,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33138634] [2022-02-11 00:56:06,196 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:56:06,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:06,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:06,197 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) [2022-02-11 00:56:06,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-11 00:56:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:06,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:56:06,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:06,457 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 00:56:06,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2022-02-11 00:56:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:06,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:06,672 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 00:56:06,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 51 [2022-02-11 00:56:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:06,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33138634] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:06,839 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:06,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2022-02-11 00:56:06,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734980180] [2022-02-11 00:56:06,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:06,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-11 00:56:06,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-11 00:56:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:56:06,842 INFO L87 Difference]: Start difference. First operand 1343 states and 3510 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:12,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:12,544 INFO L93 Difference]: Finished difference Result 3910 states and 9739 transitions. [2022-02-11 00:56:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-02-11 00:56:12,545 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 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 31 [2022-02-11 00:56:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:12,554 INFO L225 Difference]: With dead ends: 3910 [2022-02-11 00:56:12,555 INFO L226 Difference]: Without dead ends: 2974 [2022-02-11 00:56:12,557 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10853 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5059, Invalid=25043, Unknown=0, NotChecked=0, Total=30102 [2022-02-11 00:56:12,558 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 754 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:12,558 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 647 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 00:56:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2022-02-11 00:56:12,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1401. [2022-02-11 00:56:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 2.6135714285714284) internal successors, (3659), 1400 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 3659 transitions. [2022-02-11 00:56:12,606 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 3659 transitions. Word has length 31 [2022-02-11 00:56:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:12,606 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 3659 transitions. [2022-02-11 00:56:12,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 3659 transitions. [2022-02-11 00:56:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:56:12,609 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:12,609 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:12,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-11 00:56:12,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:12,826 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:56:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash -911119041, now seen corresponding path program 8 times [2022-02-11 00:56:12,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:12,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078626547] [2022-02-11 00:56:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:12,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:56:13,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:13,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078626547] [2022-02-11 00:56:13,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078626547] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:13,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245528756] [2022-02-11 00:56:13,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:56:13,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:13,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:13,014 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) [2022-02-11 00:56:13,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-11 00:56:13,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:56:13,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:13,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:56:13,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:13,303 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 00:56:13,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2022-02-11 00:56:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:13,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:13,527 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-11 00:56:13,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 51 [2022-02-11 00:56:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:13,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245528756] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:13,680 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:13,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 31 [2022-02-11 00:56:13,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553749140] [2022-02-11 00:56:13,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:13,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 00:56:13,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 00:56:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-02-11 00:56:13,681 INFO L87 Difference]: Start difference. First operand 1401 states and 3659 transitions. Second operand has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:17,041 INFO L93 Difference]: Finished difference Result 3992 states and 9944 transitions. [2022-02-11 00:56:17,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-11 00:56:17,042 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 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 31 [2022-02-11 00:56:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:17,049 INFO L225 Difference]: With dead ends: 3992 [2022-02-11 00:56:17,049 INFO L226 Difference]: Without dead ends: 3412 [2022-02-11 00:56:17,051 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3275, Invalid=13495, Unknown=0, NotChecked=0, Total=16770 [2022-02-11 00:56:17,056 INFO L934 BasicCegarLoop]: 35 mSDtfsCounter, 761 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:17,057 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 453 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:56:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2022-02-11 00:56:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 1525. [2022-02-11 00:56:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 2.6122047244094486) internal successors, (3981), 1524 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 3981 transitions. [2022-02-11 00:56:17,110 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 3981 transitions. Word has length 31 [2022-02-11 00:56:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:17,110 INFO L470 AbstractCegarLoop]: Abstraction has 1525 states and 3981 transitions. [2022-02-11 00:56:17,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 3981 transitions. [2022-02-11 00:56:17,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-11 00:56:17,112 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:17,112 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:17,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-02-11 00:56:17,325 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,SelfDestructingSolverStorable10 [2022-02-11 00:56:17,326 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:56:17,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2139987936, now seen corresponding path program 9 times [2022-02-11 00:56:17,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:17,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226822529] [2022-02-11 00:56:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:17,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:17,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226822529] [2022-02-11 00:56:17,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226822529] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:17,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327378633] [2022-02-11 00:56:17,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:56:17,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:17,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:17,372 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) [2022-02-11 00:56:17,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-11 00:56:17,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:56:17,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:17,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-11 00:56:17,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:17,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:17,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327378633] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:17,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:17,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-02-11 00:56:17,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742172349] [2022-02-11 00:56:17,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:17,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:56:17,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:56:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:56:17,506 INFO L87 Difference]: Start difference. First operand 1525 states and 3981 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:17,535 INFO L93 Difference]: Finished difference Result 2453 states and 6384 transitions. [2022-02-11 00:56:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:56:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2022-02-11 00:56:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:17,540 INFO L225 Difference]: With dead ends: 2453 [2022-02-11 00:56:17,540 INFO L226 Difference]: Without dead ends: 2396 [2022-02-11 00:56:17,540 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:56:17,541 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 79 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:17,541 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 70 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:56:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2022-02-11 00:56:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2033. [2022-02-11 00:56:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 2.6663385826771653) internal successors, (5418), 2032 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 5418 transitions. [2022-02-11 00:56:17,574 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 5418 transitions. Word has length 34 [2022-02-11 00:56:17,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:17,574 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 5418 transitions. [2022-02-11 00:56:17,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 5418 transitions. [2022-02-11 00:56:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:56:17,578 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:17,578 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:17,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-11 00:56:17,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:17,791 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:56:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:17,791 INFO L85 PathProgramCache]: Analyzing trace with hash -293873602, now seen corresponding path program 10 times [2022-02-11 00:56:17,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:17,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304034559] [2022-02-11 00:56:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:18,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:18,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304034559] [2022-02-11 00:56:18,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304034559] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:18,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547786285] [2022-02-11 00:56:18,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:56:18,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:18,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:18,030 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) [2022-02-11 00:56:18,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-11 00:56:18,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:56:18,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:18,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:56:18,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:18,490 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:56:18,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:56:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:18,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:18,892 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:56:18,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:56:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:19,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547786285] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:19,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:19,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:56:19,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614302161] [2022-02-11 00:56:19,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:19,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:56:19,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:19,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:56:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1794, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:56:19,391 INFO L87 Difference]: Start difference. First operand 2033 states and 5418 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:29,519 INFO L93 Difference]: Finished difference Result 7888 states and 19557 transitions. [2022-02-11 00:56:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2022-02-11 00:56:29,520 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 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 37 [2022-02-11 00:56:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:29,532 INFO L225 Difference]: With dead ends: 7888 [2022-02-11 00:56:29,532 INFO L226 Difference]: Without dead ends: 6844 [2022-02-11 00:56:29,535 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36898 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=13021, Invalid=78485, Unknown=0, NotChecked=0, Total=91506 [2022-02-11 00:56:29,535 INFO L934 BasicCegarLoop]: 79 mSDtfsCounter, 1619 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 4785 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 5373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 4785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:29,536 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 1449 Invalid, 5373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 4785 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-11 00:56:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6844 states. [2022-02-11 00:56:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6844 to 2385. [2022-02-11 00:56:29,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 2384 states have (on average 2.670302013422819) internal successors, (6366), 2384 states have internal predecessors, (6366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 6366 transitions. [2022-02-11 00:56:29,598 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 6366 transitions. Word has length 37 [2022-02-11 00:56:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:29,598 INFO L470 AbstractCegarLoop]: Abstraction has 2385 states and 6366 transitions. [2022-02-11 00:56:29,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 6366 transitions. [2022-02-11 00:56:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:56:29,605 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:29,605 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:29,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-11 00:56:29,822 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,SelfDestructingSolverStorable12 [2022-02-11 00:56:29,822 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:56:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:29,822 INFO L85 PathProgramCache]: Analyzing trace with hash 609080936, now seen corresponding path program 11 times [2022-02-11 00:56:29,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:29,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740581750] [2022-02-11 00:56:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:29,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:30,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:30,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740581750] [2022-02-11 00:56:30,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740581750] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:30,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446148536] [2022-02-11 00:56:30,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:56:30,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:30,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:30,083 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) [2022-02-11 00:56:30,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-11 00:56:30,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:56:30,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:30,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:56:30,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:30,418 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:56:30,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:56:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:30,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:30,767 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:56:30,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:56:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:31,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446148536] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:31,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:31,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:56:31,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774236536] [2022-02-11 00:56:31,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:31,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:56:31,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:56:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1805, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:56:31,284 INFO L87 Difference]: Start difference. First operand 2385 states and 6366 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:47,083 INFO L93 Difference]: Finished difference Result 11643 states and 28850 transitions. [2022-02-11 00:56:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 336 states. [2022-02-11 00:56:47,083 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:56:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:47,123 INFO L225 Difference]: With dead ends: 11643 [2022-02-11 00:56:47,123 INFO L226 Difference]: Without dead ends: 10173 [2022-02-11 00:56:47,128 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59584 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=19211, Invalid=123295, Unknown=0, NotChecked=0, Total=142506 [2022-02-11 00:56:47,128 INFO L934 BasicCegarLoop]: 69 mSDtfsCounter, 1401 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 5917 mSolverCounterSat, 736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 6653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 736 IncrementalHoareTripleChecker+Valid, 5917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:47,129 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1401 Valid, 1490 Invalid, 6653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [736 Valid, 5917 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-11 00:56:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10173 states. [2022-02-11 00:56:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10173 to 2603. [2022-02-11 00:56:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.68293620292083) internal successors, (6981), 2602 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 6981 transitions. [2022-02-11 00:56:47,227 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 6981 transitions. Word has length 37 [2022-02-11 00:56:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:47,227 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 6981 transitions. [2022-02-11 00:56:47,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 6981 transitions. [2022-02-11 00:56:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:56:47,232 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:47,232 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:47,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-11 00:56:47,447 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,SelfDestructingSolverStorable13 [2022-02-11 00:56:47,448 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:56:47,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:47,448 INFO L85 PathProgramCache]: Analyzing trace with hash 725042942, now seen corresponding path program 12 times [2022-02-11 00:56:47,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:47,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981987990] [2022-02-11 00:56:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:47,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:47,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981987990] [2022-02-11 00:56:47,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981987990] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:47,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622268892] [2022-02-11 00:56:47,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:56:47,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:47,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:47,663 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) [2022-02-11 00:56:47,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-11 00:56:47,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:56:47,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:47,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-11 00:56:47,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:48,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:56:48,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:56:48,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:56:48,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:56:48,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:56:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:56:48,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-02-11 00:56:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:48,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:49,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:56:49,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:56:49,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:56:49,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:56:49,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:56:49,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:56:49,239 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:56:49,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 32 treesize of output 92 [2022-02-11 00:56:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:49,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622268892] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:49,893 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:49,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:56:49,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227254675] [2022-02-11 00:56:49,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:49,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:56:49,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:56:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1740, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:56:49,894 INFO L87 Difference]: Start difference. First operand 2603 states and 6981 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:52,494 INFO L93 Difference]: Finished difference Result 4636 states and 12333 transitions. [2022-02-11 00:56:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-11 00:56:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:56:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:52,504 INFO L225 Difference]: With dead ends: 4636 [2022-02-11 00:56:52,504 INFO L226 Difference]: Without dead ends: 4587 [2022-02-11 00:56:52,507 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 71 SyntacticMatches, 7 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4449 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2197, Invalid=11845, Unknown=0, NotChecked=0, Total=14042 [2022-02-11 00:56:52,508 INFO L934 BasicCegarLoop]: 27 mSDtfsCounter, 288 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1733 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:52,508 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 501 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 725 Invalid, 0 Unknown, 1733 Unchecked, 0.3s Time] [2022-02-11 00:56:52,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4587 states. [2022-02-11 00:56:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4587 to 2757. [2022-02-11 00:56:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2756 states have (on average 2.6756168359941945) internal successors, (7374), 2756 states have internal predecessors, (7374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 7374 transitions. [2022-02-11 00:56:52,563 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 7374 transitions. Word has length 37 [2022-02-11 00:56:52,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:52,565 INFO L470 AbstractCegarLoop]: Abstraction has 2757 states and 7374 transitions. [2022-02-11 00:56:52,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 7374 transitions. [2022-02-11 00:56:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:56:52,570 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:52,570 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:52,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-11 00:56:52,786 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,SelfDestructingSolverStorable14 [2022-02-11 00:56:52,787 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:56:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1062011650, now seen corresponding path program 13 times [2022-02-11 00:56:52,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:52,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385916270] [2022-02-11 00:56:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:52,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:53,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:53,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385916270] [2022-02-11 00:56:53,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385916270] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:53,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587202284] [2022-02-11 00:56:53,071 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:56:53,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:53,072 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) [2022-02-11 00:56:53,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-11 00:56:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:53,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:56:53,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:53,522 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:56:53,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:56:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:53,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:53,974 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:56:53,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:56:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:54,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587202284] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:54,351 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:54,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:56:54,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413851757] [2022-02-11 00:56:54,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:54,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:56:54,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:56:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1804, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:56:54,352 INFO L87 Difference]: Start difference. First operand 2757 states and 7374 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:10,805 INFO L93 Difference]: Finished difference Result 13846 states and 34888 transitions. [2022-02-11 00:57:10,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 350 states. [2022-02-11 00:57:10,805 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 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 37 [2022-02-11 00:57:10,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:10,849 INFO L225 Difference]: With dead ends: 13846 [2022-02-11 00:57:10,849 INFO L226 Difference]: Without dead ends: 12834 [2022-02-11 00:57:10,855 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65124 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=20027, Invalid=133245, Unknown=0, NotChecked=0, Total=153272 [2022-02-11 00:57:10,855 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 1134 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 5924 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 6545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 5924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:10,855 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 1784 Invalid, 6545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 5924 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-11 00:57:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2022-02-11 00:57:10,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 3327. [2022-02-11 00:57:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3326 states have (on average 2.7194828622970535) internal successors, (9045), 3326 states have internal predecessors, (9045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 9045 transitions. [2022-02-11 00:57:10,972 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 9045 transitions. Word has length 37 [2022-02-11 00:57:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:10,972 INFO L470 AbstractCegarLoop]: Abstraction has 3327 states and 9045 transitions. [2022-02-11 00:57:10,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 9045 transitions. [2022-02-11 00:57:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:57:10,979 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:10,979 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:10,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-02-11 00:57:11,191 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,SelfDestructingSolverStorable15 [2022-02-11 00:57:11,192 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:57:11,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2026265026, now seen corresponding path program 14 times [2022-02-11 00:57:11,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:11,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378943171] [2022-02-11 00:57:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:11,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:11,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378943171] [2022-02-11 00:57:11,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378943171] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:11,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705948814] [2022-02-11 00:57:11,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:57:11,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:11,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:11,434 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) [2022-02-11 00:57:11,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-11 00:57:11,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:57:11,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:57:11,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:57:11,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:11,921 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:57:11,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:57:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:11,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:12,357 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:57:12,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:57:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:12,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705948814] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:12,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:12,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:57:12,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558991888] [2022-02-11 00:57:12,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:12,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:57:12,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:57:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1801, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:57:12,768 INFO L87 Difference]: Start difference. First operand 3327 states and 9045 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:27,472 INFO L93 Difference]: Finished difference Result 16809 states and 42113 transitions. [2022-02-11 00:57:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 373 states. [2022-02-11 00:57:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:57:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:27,496 INFO L225 Difference]: With dead ends: 16809 [2022-02-11 00:57:27,496 INFO L226 Difference]: Without dead ends: 14346 [2022-02-11 00:57:27,502 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76932 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=24383, Invalid=147427, Unknown=0, NotChecked=0, Total=171810 [2022-02-11 00:57:27,503 INFO L934 BasicCegarLoop]: 68 mSDtfsCounter, 1850 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 4610 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 5525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 4610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:27,503 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1276 Invalid, 5525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 4610 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-11 00:57:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14346 states. [2022-02-11 00:57:27,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14346 to 3535. [2022-02-11 00:57:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3534 states have (on average 2.7190152801358236) internal successors, (9609), 3534 states have internal predecessors, (9609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 9609 transitions. [2022-02-11 00:57:27,617 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 9609 transitions. Word has length 37 [2022-02-11 00:57:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:27,618 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 9609 transitions. [2022-02-11 00:57:27,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 9609 transitions. [2022-02-11 00:57:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:57:27,624 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:27,624 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:27,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-11 00:57:27,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:27,839 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:57:27,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:27,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1277334372, now seen corresponding path program 15 times [2022-02-11 00:57:27,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:27,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485114051] [2022-02-11 00:57:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:27,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:28,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:28,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485114051] [2022-02-11 00:57:28,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485114051] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:28,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952826645] [2022-02-11 00:57:28,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:57:28,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:28,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:28,068 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) [2022-02-11 00:57:28,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-11 00:57:28,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:57:28,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:57:28,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-11 00:57:28,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:28,556 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:57:28,556 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:57:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:28,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:28,998 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:57:28,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 39 treesize of output 103 [2022-02-11 00:57:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:29,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952826645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:29,594 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:29,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:57:29,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671682424] [2022-02-11 00:57:29,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:29,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:57:29,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:29,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:57:29,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1810, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:57:29,595 INFO L87 Difference]: Start difference. First operand 3535 states and 9609 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:49,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:49,335 INFO L93 Difference]: Finished difference Result 15579 states and 39558 transitions. [2022-02-11 00:57:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 397 states. [2022-02-11 00:57:49,336 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:57:49,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:49,360 INFO L225 Difference]: With dead ends: 15579 [2022-02-11 00:57:49,360 INFO L226 Difference]: Without dead ends: 14122 [2022-02-11 00:57:49,370 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 437 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86518 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=24782, Invalid=167500, Unknown=0, NotChecked=0, Total=192282 [2022-02-11 00:57:49,370 INFO L934 BasicCegarLoop]: 78 mSDtfsCounter, 1551 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 6306 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 7126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 6306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:49,370 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 1653 Invalid, 7126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 6306 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-11 00:57:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14122 states. [2022-02-11 00:57:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14122 to 4322. [2022-02-11 00:57:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4321 states have (on average 2.7283036334181903) internal successors, (11789), 4321 states have internal predecessors, (11789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 11789 transitions. [2022-02-11 00:57:49,528 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 11789 transitions. Word has length 37 [2022-02-11 00:57:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:49,528 INFO L470 AbstractCegarLoop]: Abstraction has 4322 states and 11789 transitions. [2022-02-11 00:57:49,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 11789 transitions. [2022-02-11 00:57:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:57:49,535 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:49,535 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:49,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-11 00:57:49,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-11 00:57:49,766 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:57:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1393296378, now seen corresponding path program 16 times [2022-02-11 00:57:49,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:49,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347422032] [2022-02-11 00:57:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:49,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:50,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:50,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347422032] [2022-02-11 00:57:50,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347422032] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:50,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339828860] [2022-02-11 00:57:50,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:57:50,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:50,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:50,034 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) [2022-02-11 00:57:50,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-11 00:57:50,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:57:50,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:57:50,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:57:50,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:50,511 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:57:50,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:57:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:50,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:50,965 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:57:50,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:57:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:51,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339828860] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:51,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:51,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:57:51,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773863532] [2022-02-11 00:57:51,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:51,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:57:51,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:57:51,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1811, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:57:51,458 INFO L87 Difference]: Start difference. First operand 4322 states and 11789 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:08,596 INFO L93 Difference]: Finished difference Result 19425 states and 50281 transitions. [2022-02-11 00:58:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 406 states. [2022-02-11 00:58:08,596 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 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 37 [2022-02-11 00:58:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:08,625 INFO L225 Difference]: With dead ends: 19425 [2022-02-11 00:58:08,625 INFO L226 Difference]: Without dead ends: 18389 [2022-02-11 00:58:08,633 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88585 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=23496, Invalid=176760, Unknown=0, NotChecked=0, Total=200256 [2022-02-11 00:58:08,633 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 1365 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 7768 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 8521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 7768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:08,633 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1365 Valid, 2251 Invalid, 8521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [753 Valid, 7768 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-11 00:58:08,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18389 states. [2022-02-11 00:58:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18389 to 5336. [2022-02-11 00:58:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5336 states, 5335 states have (on average 2.7321462043111526) internal successors, (14576), 5335 states have internal predecessors, (14576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 14576 transitions. [2022-02-11 00:58:08,782 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 14576 transitions. Word has length 37 [2022-02-11 00:58:08,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:08,782 INFO L470 AbstractCegarLoop]: Abstraction has 5336 states and 14576 transitions. [2022-02-11 00:58:08,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 14576 transitions. [2022-02-11 00:58:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:58:08,791 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:08,791 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:08,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-11 00:58:09,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:09,007 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:58:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash 730758682, now seen corresponding path program 17 times [2022-02-11 00:58:09,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:09,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509062892] [2022-02-11 00:58:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:58:09,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:09,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509062892] [2022-02-11 00:58:09,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509062892] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:09,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660226979] [2022-02-11 00:58:09,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:58:09,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:09,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:09,212 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) [2022-02-11 00:58:09,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-11 00:58:09,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:58:09,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:58:09,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:58:09,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:09,721 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:58:09,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:58:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:09,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:10,141 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:58:10,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:58:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:10,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660226979] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:10,547 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:10,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 45 [2022-02-11 00:58:10,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134987475] [2022-02-11 00:58:10,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:10,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-11 00:58:10,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-11 00:58:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1732, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 00:58:10,548 INFO L87 Difference]: Start difference. First operand 5336 states and 14576 transitions. Second operand has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:30,510 INFO L93 Difference]: Finished difference Result 19470 states and 50048 transitions. [2022-02-11 00:58:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 420 states. [2022-02-11 00:58:30,511 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:58:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:30,545 INFO L225 Difference]: With dead ends: 19470 [2022-02-11 00:58:30,545 INFO L226 Difference]: Without dead ends: 17725 [2022-02-11 00:58:30,552 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99488 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=31398, Invalid=180662, Unknown=0, NotChecked=0, Total=212060 [2022-02-11 00:58:30,554 INFO L934 BasicCegarLoop]: 83 mSDtfsCounter, 1706 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 5853 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 6657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 5853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:30,554 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 1784 Invalid, 6657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 5853 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-11 00:58:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17725 states. [2022-02-11 00:58:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17725 to 6234. [2022-02-11 00:58:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6234 states, 6233 states have (on average 2.7328734156906784) internal successors, (17034), 6233 states have internal predecessors, (17034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 17034 transitions. [2022-02-11 00:58:30,769 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 17034 transitions. Word has length 37 [2022-02-11 00:58:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:30,769 INFO L470 AbstractCegarLoop]: Abstraction has 6234 states and 17034 transitions. [2022-02-11 00:58:30,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 17034 transitions. [2022-02-11 00:58:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:58:30,777 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:30,777 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:30,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-11 00:58:30,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:30,992 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:58:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1515417626, now seen corresponding path program 18 times [2022-02-11 00:58:30,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:30,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860738052] [2022-02-11 00:58:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:30,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:31,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:31,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860738052] [2022-02-11 00:58:31,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860738052] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:31,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039469572] [2022-02-11 00:58:31,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:58:31,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:31,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:31,199 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) [2022-02-11 00:58:31,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-11 00:58:31,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:58:31,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:58:31,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:58:31,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:31,646 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:58:31,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:58:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:31,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:32,030 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:58:32,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:58:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:32,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039469572] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:32,449 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:32,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 45 [2022-02-11 00:58:32,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113011598] [2022-02-11 00:58:32,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:32,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-11 00:58:32,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-11 00:58:32,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1726, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 00:58:32,450 INFO L87 Difference]: Start difference. First operand 6234 states and 17034 transitions. Second operand has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:51,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:51,374 INFO L93 Difference]: Finished difference Result 31234 states and 81888 transitions. [2022-02-11 00:58:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2022-02-11 00:58:51,375 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:58:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:51,434 INFO L225 Difference]: With dead ends: 31234 [2022-02-11 00:58:51,434 INFO L226 Difference]: Without dead ends: 28790 [2022-02-11 00:58:51,445 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 466 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103084 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=29621, Invalid=188935, Unknown=0, NotChecked=0, Total=218556 [2022-02-11 00:58:51,445 INFO L934 BasicCegarLoop]: 88 mSDtfsCounter, 2195 mSDsluCounter, 3630 mSDsCounter, 0 mSdLazyCounter, 6351 mSolverCounterSat, 1169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 7520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1169 IncrementalHoareTripleChecker+Valid, 6351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:51,445 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2195 Valid, 1918 Invalid, 7520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1169 Valid, 6351 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-11 00:58:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28790 states. [2022-02-11 00:58:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28790 to 9104. [2022-02-11 00:58:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9104 states, 9103 states have (on average 2.730748105020323) internal successors, (24858), 9103 states have internal predecessors, (24858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9104 states to 9104 states and 24858 transitions. [2022-02-11 00:58:51,785 INFO L78 Accepts]: Start accepts. Automaton has 9104 states and 24858 transitions. Word has length 37 [2022-02-11 00:58:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:51,785 INFO L470 AbstractCegarLoop]: Abstraction has 9104 states and 24858 transitions. [2022-02-11 00:58:51,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9104 states and 24858 transitions. [2022-02-11 00:58:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:58:51,798 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:51,798 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:51,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-11 00:58:52,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:52,014 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:58:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:52,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1952777662, now seen corresponding path program 19 times [2022-02-11 00:58:52,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:52,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530536372] [2022-02-11 00:58:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:52,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:58:52,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:52,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530536372] [2022-02-11 00:58:52,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530536372] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:52,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41232256] [2022-02-11 00:58:52,201 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:58:52,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:52,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:52,220 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) [2022-02-11 00:58:52,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-11 00:58:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:52,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:58:52,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:52,668 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:58:52,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:58:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:52,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:53,097 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:58:53,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:58:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:53,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41232256] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:53,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:53,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 44 [2022-02-11 00:58:53,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886105587] [2022-02-11 00:58:53,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:53,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-11 00:58:53,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:53,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-11 00:58:53,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 00:58:53,579 INFO L87 Difference]: Start difference. First operand 9104 states and 24858 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:08,801 INFO L93 Difference]: Finished difference Result 32667 states and 86823 transitions. [2022-02-11 00:59:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 354 states. [2022-02-11 00:59:08,802 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 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 37 [2022-02-11 00:59:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:08,864 INFO L225 Difference]: With dead ends: 32667 [2022-02-11 00:59:08,864 INFO L226 Difference]: Without dead ends: 31087 [2022-02-11 00:59:08,871 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71981 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=22308, Invalid=132534, Unknown=0, NotChecked=0, Total=154842 [2022-02-11 00:59:08,872 INFO L934 BasicCegarLoop]: 117 mSDtfsCounter, 1751 mSDsluCounter, 4735 mSDsCounter, 0 mSdLazyCounter, 7318 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 8281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 7318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:08,872 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 2646 Invalid, 8281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 7318 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-11 00:59:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31087 states. [2022-02-11 00:59:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31087 to 11836. [2022-02-11 00:59:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11836 states, 11835 states have (on average 2.7356991972961553) internal successors, (32377), 11835 states have internal predecessors, (32377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 32377 transitions. [2022-02-11 00:59:09,249 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 32377 transitions. Word has length 37 [2022-02-11 00:59:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:09,249 INFO L470 AbstractCegarLoop]: Abstraction has 11836 states and 32377 transitions. [2022-02-11 00:59:09,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 32377 transitions. [2022-02-11 00:59:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:59:09,263 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:09,263 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:09,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-11 00:59:09,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:09,484 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:59:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash 732190768, now seen corresponding path program 20 times [2022-02-11 00:59:09,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:09,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015043151] [2022-02-11 00:59:09,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:09,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:09,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:09,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015043151] [2022-02-11 00:59:09,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015043151] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:09,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549730729] [2022-02-11 00:59:09,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:59:09,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:09,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:09,705 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) [2022-02-11 00:59:09,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-11 00:59:09,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:59:09,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:09,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:59:09,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:10,113 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:59:10,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:59:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:10,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:10,495 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:59:10,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:59:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:10,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549730729] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:10,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:10,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 45 [2022-02-11 00:59:10,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840795504] [2022-02-11 00:59:10,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:10,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-11 00:59:10,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:10,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-11 00:59:10,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1722, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 00:59:10,921 INFO L87 Difference]: Start difference. First operand 11836 states and 32377 transitions. Second operand has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:25,759 INFO L93 Difference]: Finished difference Result 33473 states and 89499 transitions. [2022-02-11 00:59:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 328 states. [2022-02-11 00:59:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:59:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:25,879 INFO L225 Difference]: With dead ends: 33473 [2022-02-11 00:59:25,879 INFO L226 Difference]: Without dead ends: 31834 [2022-02-11 00:59:25,883 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60160 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=20754, Invalid=115038, Unknown=0, NotChecked=0, Total=135792 [2022-02-11 00:59:25,883 INFO L934 BasicCegarLoop]: 74 mSDtfsCounter, 1317 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 5366 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 6074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 5366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:25,884 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 1506 Invalid, 6074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 5366 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-11 00:59:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31834 states. [2022-02-11 00:59:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31834 to 12555. [2022-02-11 00:59:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12555 states, 12554 states have (on average 2.736498327226382) internal successors, (34354), 12554 states have internal predecessors, (34354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12555 states to 12555 states and 34354 transitions. [2022-02-11 00:59:26,214 INFO L78 Accepts]: Start accepts. Automaton has 12555 states and 34354 transitions. Word has length 37 [2022-02-11 00:59:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:26,214 INFO L470 AbstractCegarLoop]: Abstraction has 12555 states and 34354 transitions. [2022-02-11 00:59:26,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 12555 states and 34354 transitions. [2022-02-11 00:59:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:59:26,229 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:26,229 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:26,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-11 00:59:26,443 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,SelfDestructingSolverStorable22 [2022-02-11 00:59:26,444 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:59:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1932553214, now seen corresponding path program 21 times [2022-02-11 00:59:26,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:26,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769138564] [2022-02-11 00:59:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:26,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:59:26,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:26,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769138564] [2022-02-11 00:59:26,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769138564] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:26,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210057887] [2022-02-11 00:59:26,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:59:26,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:26,584 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) [2022-02-11 00:59:26,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-11 00:59:26,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 00:59:26,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:26,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-11 00:59:26,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:26,894 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:59:26,895 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:59:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:26,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:27,192 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:59:27,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 39 treesize of output 103 [2022-02-11 00:59:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:27,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210057887] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:27,633 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:27,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 44 [2022-02-11 00:59:27,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133048887] [2022-02-11 00:59:27,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:27,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-11 00:59:27,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-11 00:59:27,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 00:59:27,635 INFO L87 Difference]: Start difference. First operand 12555 states and 34354 transitions. Second operand has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:39,339 INFO L93 Difference]: Finished difference Result 33192 states and 88992 transitions. [2022-02-11 00:59:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2022-02-11 00:59:39,339 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:59:39,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:39,411 INFO L225 Difference]: With dead ends: 33192 [2022-02-11 00:59:39,411 INFO L226 Difference]: Without dead ends: 31790 [2022-02-11 00:59:39,414 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43653 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=16321, Invalid=87041, Unknown=0, NotChecked=0, Total=103362 [2022-02-11 00:59:39,414 INFO L934 BasicCegarLoop]: 93 mSDtfsCounter, 1114 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 5203 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 5820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 5203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:39,415 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 1794 Invalid, 5820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 5203 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-11 00:59:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2022-02-11 00:59:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 13207. [2022-02-11 00:59:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13207 states, 13206 states have (on average 2.7397395123428745) internal successors, (36181), 13206 states have internal predecessors, (36181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13207 states to 13207 states and 36181 transitions. [2022-02-11 00:59:39,756 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 36181 transitions. Word has length 37 [2022-02-11 00:59:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:39,757 INFO L470 AbstractCegarLoop]: Abstraction has 13207 states and 36181 transitions. [2022-02-11 00:59:39,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 36181 transitions. [2022-02-11 00:59:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:59:39,771 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:39,771 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:39,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-11 00:59:39,983 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,SelfDestructingSolverStorable23 [2022-02-11 00:59:39,984 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:59:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1784070594, now seen corresponding path program 22 times [2022-02-11 00:59:39,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:39,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343926263] [2022-02-11 00:59:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:40,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:40,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343926263] [2022-02-11 00:59:40,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343926263] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:40,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625924550] [2022-02-11 00:59:40,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:59:40,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:40,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:40,191 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) [2022-02-11 00:59:40,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-11 00:59:40,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:59:40,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:40,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:59:40,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:40,664 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 00:59:40,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:59:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:40,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:41,137 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 00:59:41,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 00:59:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:41,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625924550] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:41,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:41,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:59:41,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523235133] [2022-02-11 00:59:41,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:41,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:59:41,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:59:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1782, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:59:41,593 INFO L87 Difference]: Start difference. First operand 13207 states and 36181 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:49,765 INFO L93 Difference]: Finished difference Result 27912 states and 74844 transitions. [2022-02-11 00:59:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-02-11 00:59:49,765 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 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 37 [2022-02-11 00:59:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:49,865 INFO L225 Difference]: With dead ends: 27912 [2022-02-11 00:59:49,865 INFO L226 Difference]: Without dead ends: 27500 [2022-02-11 00:59:49,867 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22323 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=8313, Invalid=50009, Unknown=0, NotChecked=0, Total=58322 [2022-02-11 00:59:49,867 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 1123 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:49,867 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 536 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 3131 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 00:59:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27500 states. [2022-02-11 00:59:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27500 to 13985. [2022-02-11 00:59:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13985 states, 13984 states have (on average 2.7281893592677346) internal successors, (38151), 13984 states have internal predecessors, (38151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13985 states to 13985 states and 38151 transitions. [2022-02-11 00:59:50,203 INFO L78 Accepts]: Start accepts. Automaton has 13985 states and 38151 transitions. Word has length 37 [2022-02-11 00:59:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:50,204 INFO L470 AbstractCegarLoop]: Abstraction has 13985 states and 38151 transitions. [2022-02-11 00:59:50,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13985 states and 38151 transitions. [2022-02-11 00:59:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:59:50,219 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:50,219 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:50,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-11 00:59:50,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:50,435 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 00:59:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1519528804, now seen corresponding path program 23 times [2022-02-11 00:59:50,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:50,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238655287] [2022-02-11 00:59:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:50,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:50,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238655287] [2022-02-11 00:59:50,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238655287] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:50,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190779635] [2022-02-11 00:59:50,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:59:50,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:50,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:50,617 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) [2022-02-11 00:59:50,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-11 00:59:50,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:59:50,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:50,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:59:50,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:50,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:59:51,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:59:51,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:59:51,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 00:59:51,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 00:59:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:51,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:51,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 00:59:51,306 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:59:51,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 98 [2022-02-11 00:59:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:51,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190779635] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:51,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:51,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 00:59:51,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136654049] [2022-02-11 00:59:51,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:51,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 00:59:51,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:51,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 00:59:51,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1785, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:59:51,609 INFO L87 Difference]: Start difference. First operand 13985 states and 38151 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:02,974 INFO L93 Difference]: Finished difference Result 32196 states and 85016 transitions. [2022-02-11 01:00:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2022-02-11 01:00:02,975 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 01:00:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:03,043 INFO L225 Difference]: With dead ends: 32196 [2022-02-11 01:00:03,043 INFO L226 Difference]: Without dead ends: 30842 [2022-02-11 01:00:03,047 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39555 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=13928, Invalid=77578, Unknown=0, NotChecked=0, Total=91506 [2022-02-11 01:00:03,047 INFO L934 BasicCegarLoop]: 89 mSDtfsCounter, 1177 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 4436 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 5681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 4436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 620 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:03,048 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1987 Invalid, 5681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 4436 Invalid, 0 Unknown, 620 Unchecked, 1.7s Time] [2022-02-11 01:00:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30842 states. [2022-02-11 01:00:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30842 to 14560. [2022-02-11 01:00:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14560 states, 14559 states have (on average 2.7218215536781374) internal successors, (39627), 14559 states have internal predecessors, (39627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14560 states to 14560 states and 39627 transitions. [2022-02-11 01:00:03,409 INFO L78 Accepts]: Start accepts. Automaton has 14560 states and 39627 transitions. Word has length 37 [2022-02-11 01:00:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:03,409 INFO L470 AbstractCegarLoop]: Abstraction has 14560 states and 39627 transitions. [2022-02-11 01:00:03,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14560 states and 39627 transitions. [2022-02-11 01:00:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 01:00:03,425 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:03,425 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:03,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-11 01:00:03,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:03,642 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:00:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:03,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1684148304, now seen corresponding path program 24 times [2022-02-11 01:00:03,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:03,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464546912] [2022-02-11 01:00:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:03,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 01:00:03,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:03,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464546912] [2022-02-11 01:00:03,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464546912] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:03,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190897458] [2022-02-11 01:00:03,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:00:03,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:03,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:03,855 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) [2022-02-11 01:00:03,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-11 01:00:03,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:00:03,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:00:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 01:00:03,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:04,323 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 01:00:04,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 01:00:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:04,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:04,772 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:00:04,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 01:00:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:05,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190897458] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:05,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:05,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 44 [2022-02-11 01:00:05,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182852417] [2022-02-11 01:00:05,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:05,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-11 01:00:05,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-11 01:00:05,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1647, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:00:05,207 INFO L87 Difference]: Start difference. First operand 14560 states and 39627 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:16,022 INFO L93 Difference]: Finished difference Result 31171 states and 82882 transitions. [2022-02-11 01:00:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2022-02-11 01:00:16,023 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 0 states have call successors, (0), 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 37 [2022-02-11 01:00:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:16,089 INFO L225 Difference]: With dead ends: 31171 [2022-02-11 01:00:16,090 INFO L226 Difference]: Without dead ends: 30819 [2022-02-11 01:00:16,094 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32626 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=11529, Invalid=68277, Unknown=0, NotChecked=0, Total=79806 [2022-02-11 01:00:16,094 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 1218 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:16,094 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 754 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 3424 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 01:00:16,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30819 states. [2022-02-11 01:00:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30819 to 15192. [2022-02-11 01:00:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15192 states, 15191 states have (on average 2.7192416562438284) internal successors, (41308), 15191 states have internal predecessors, (41308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15192 states to 15192 states and 41308 transitions. [2022-02-11 01:00:16,454 INFO L78 Accepts]: Start accepts. Automaton has 15192 states and 41308 transitions. Word has length 37 [2022-02-11 01:00:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:16,454 INFO L470 AbstractCegarLoop]: Abstraction has 15192 states and 41308 transitions. [2022-02-11 01:00:16,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 15192 states and 41308 transitions. [2022-02-11 01:00:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 01:00:16,489 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:16,489 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:16,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-11 01:00:16,706 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,SelfDestructingSolverStorable26 [2022-02-11 01:00:16,707 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:00:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2066976134, now seen corresponding path program 25 times [2022-02-11 01:00:16,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:16,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241886909] [2022-02-11 01:00:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:16,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:00:16,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:16,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241886909] [2022-02-11 01:00:16,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241886909] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:16,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205943850] [2022-02-11 01:00:16,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:00:16,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:16,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:16,918 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) [2022-02-11 01:00:16,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-11 01:00:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:16,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 01:00:16,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:17,395 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 01:00:17,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 01:00:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:17,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:17,880 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:00:17,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 01:00:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:18,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205943850] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:18,260 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:18,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 44 [2022-02-11 01:00:18,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277660806] [2022-02-11 01:00:18,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:18,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-11 01:00:18,260 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-11 01:00:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1620, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:00:18,261 INFO L87 Difference]: Start difference. First operand 15192 states and 41308 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:29,316 INFO L93 Difference]: Finished difference Result 40939 states and 109794 transitions. [2022-02-11 01:00:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2022-02-11 01:00:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 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 37 [2022-02-11 01:00:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:29,394 INFO L225 Difference]: With dead ends: 40939 [2022-02-11 01:00:29,394 INFO L226 Difference]: Without dead ends: 39453 [2022-02-11 01:00:29,401 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49162 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=16678, Invalid=95212, Unknown=0, NotChecked=0, Total=111890 [2022-02-11 01:00:29,401 INFO L934 BasicCegarLoop]: 95 mSDtfsCounter, 1246 mSDsluCounter, 3589 mSDsCounter, 0 mSdLazyCounter, 5130 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 5763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 5130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:29,402 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 2049 Invalid, 5763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 5130 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-11 01:00:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39453 states. [2022-02-11 01:00:29,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39453 to 16120. [2022-02-11 01:00:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16120 states, 16119 states have (on average 2.7244866306842854) internal successors, (43916), 16119 states have internal predecessors, (43916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16120 states to 16120 states and 43916 transitions. [2022-02-11 01:00:29,879 INFO L78 Accepts]: Start accepts. Automaton has 16120 states and 43916 transitions. Word has length 37 [2022-02-11 01:00:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:29,879 INFO L470 AbstractCegarLoop]: Abstraction has 16120 states and 43916 transitions. [2022-02-11 01:00:29,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 16120 states and 43916 transitions. [2022-02-11 01:00:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 01:00:29,902 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:29,902 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:29,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-11 01:00:30,109 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,SelfDestructingSolverStorable27 [2022-02-11 01:00:30,111 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:00:30,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:30,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1940938686, now seen corresponding path program 26 times [2022-02-11 01:00:30,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:30,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279203246] [2022-02-11 01:00:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:30,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:30,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279203246] [2022-02-11 01:00:30,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279203246] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:30,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228745767] [2022-02-11 01:00:30,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:00:30,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:30,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:30,355 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) [2022-02-11 01:00:30,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-11 01:00:30,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:00:30,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:00:30,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 01:00:30,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:30,842 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 01:00:30,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 01:00:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:30,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:31,280 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:00:31,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 01:00:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:31,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228745767] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:31,677 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:31,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 01:00:31,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016344436] [2022-02-11 01:00:31,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:31,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 01:00:31,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:31,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 01:00:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1775, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 01:00:31,685 INFO L87 Difference]: Start difference. First operand 16120 states and 43916 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:42,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:42,660 INFO L93 Difference]: Finished difference Result 35540 states and 95539 transitions. [2022-02-11 01:00:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-02-11 01:00:42,661 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 01:00:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:42,732 INFO L225 Difference]: With dead ends: 35540 [2022-02-11 01:00:42,732 INFO L226 Difference]: Without dead ends: 34093 [2022-02-11 01:00:42,736 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36899 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=12408, Invalid=78494, Unknown=0, NotChecked=0, Total=90902 [2022-02-11 01:00:42,737 INFO L934 BasicCegarLoop]: 60 mSDtfsCounter, 1217 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 4786 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 4786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:42,737 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1217 Valid, 1248 Invalid, 5268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 4786 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-11 01:00:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34093 states. [2022-02-11 01:00:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34093 to 17528. [2022-02-11 01:00:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17528 states, 17527 states have (on average 2.7226564728704283) internal successors, (47720), 17527 states have internal predecessors, (47720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17528 states to 17528 states and 47720 transitions. [2022-02-11 01:00:43,136 INFO L78 Accepts]: Start accepts. Automaton has 17528 states and 47720 transitions. Word has length 37 [2022-02-11 01:00:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:43,136 INFO L470 AbstractCegarLoop]: Abstraction has 17528 states and 47720 transitions. [2022-02-11 01:00:43,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 17528 states and 47720 transitions. [2022-02-11 01:00:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 01:00:43,158 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:43,159 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:43,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-11 01:00:43,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-11 01:00:43,372 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:00:43,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:43,372 INFO L85 PathProgramCache]: Analyzing trace with hash 949570788, now seen corresponding path program 27 times [2022-02-11 01:00:43,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:43,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521554191] [2022-02-11 01:00:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:43,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:43,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:43,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521554191] [2022-02-11 01:00:43,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521554191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:43,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847786401] [2022-02-11 01:00:43,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:00:43,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:43,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:43,540 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) [2022-02-11 01:00:43,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-11 01:00:43,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:00:43,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:00:43,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-11 01:00:43,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:43,956 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 01:00:43,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 01:00:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:43,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:44,254 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:00:44,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 39 treesize of output 103 [2022-02-11 01:00:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:44,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847786401] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:44,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:44,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2022-02-11 01:00:44,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650534798] [2022-02-11 01:00:44,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:44,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-11 01:00:44,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:44,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-11 01:00:44,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1793, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 01:00:44,668 INFO L87 Difference]: Start difference. First operand 17528 states and 47720 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:54,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:54,597 INFO L93 Difference]: Finished difference Result 36001 states and 97032 transitions. [2022-02-11 01:00:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-02-11 01:00:54,597 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 01:00:54,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:54,664 INFO L225 Difference]: With dead ends: 36001 [2022-02-11 01:00:54,664 INFO L226 Difference]: Without dead ends: 35103 [2022-02-11 01:00:54,666 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28391 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=11364, Invalid=62348, Unknown=0, NotChecked=0, Total=73712 [2022-02-11 01:00:54,667 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 1001 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 4003 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 4510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 4003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:54,667 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 875 Invalid, 4510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 4003 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 01:00:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35103 states. [2022-02-11 01:00:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35103 to 18000. [2022-02-11 01:00:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18000 states, 17999 states have (on average 2.716039779987777) internal successors, (48886), 17999 states have internal predecessors, (48886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18000 states to 18000 states and 48886 transitions. [2022-02-11 01:00:55,051 INFO L78 Accepts]: Start accepts. Automaton has 18000 states and 48886 transitions. Word has length 37 [2022-02-11 01:00:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:55,051 INFO L470 AbstractCegarLoop]: Abstraction has 18000 states and 48886 transitions. [2022-02-11 01:00:55,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 18000 states and 48886 transitions. [2022-02-11 01:00:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 01:00:55,072 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:55,072 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:55,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-11 01:00:55,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:55,287 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:00:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:55,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1131314986, now seen corresponding path program 28 times [2022-02-11 01:00:55,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:55,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230597086] [2022-02-11 01:00:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:55,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 01:00:55,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:55,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230597086] [2022-02-11 01:00:55,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230597086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:55,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289289385] [2022-02-11 01:00:55,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:00:55,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:55,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:55,482 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) [2022-02-11 01:00:55,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-11 01:00:55,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:00:55,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:00:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 01:00:55,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:55,923 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-02-11 01:00:55,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 01:00:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:55,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:56,452 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-11 01:00:56,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 40 treesize of output 104 [2022-02-11 01:00:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:56,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289289385] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:56,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:56,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 45 [2022-02-11 01:00:56,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811476578] [2022-02-11 01:00:56,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:56,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-11 01:00:56,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-11 01:00:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1715, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:00:56,846 INFO L87 Difference]: Start difference. First operand 18000 states and 48886 transitions. Second operand has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 45 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:01:12,023 INFO L93 Difference]: Finished difference Result 47599 states and 127744 transitions. [2022-02-11 01:01:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 339 states. [2022-02-11 01:01:12,023 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 45 states have internal predecessors, (92), 0 states have call successors, (0), 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 37 [2022-02-11 01:01:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:01:12,125 INFO L225 Difference]: With dead ends: 47599 [2022-02-11 01:01:12,125 INFO L226 Difference]: Without dead ends: 46244 [2022-02-11 01:01:12,131 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62634 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=20490, Invalid=123530, Unknown=0, NotChecked=0, Total=144020 [2022-02-11 01:01:12,131 INFO L934 BasicCegarLoop]: 75 mSDtfsCounter, 1306 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 6007 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 6623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 6007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:01:12,131 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 1489 Invalid, 6623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 6007 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-11 01:01:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46244 states. [2022-02-11 01:01:12,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46244 to 20798. [2022-02-11 01:01:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20798 states, 20797 states have (on average 2.712747030821753) internal successors, (56417), 20797 states have internal predecessors, (56417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20798 states to 20798 states and 56417 transitions. [2022-02-11 01:01:12,735 INFO L78 Accepts]: Start accepts. Automaton has 20798 states and 56417 transitions. Word has length 37 [2022-02-11 01:01:12,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:01:12,736 INFO L470 AbstractCegarLoop]: Abstraction has 20798 states and 56417 transitions. [2022-02-11 01:01:12,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 45 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 20798 states and 56417 transitions. [2022-02-11 01:01:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 01:01:12,769 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:01:12,769 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:01:12,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-11 01:01:12,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:12,988 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:01:12,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:01:12,988 INFO L85 PathProgramCache]: Analyzing trace with hash -346656042, now seen corresponding path program 29 times [2022-02-11 01:01:12,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:01:12,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595572720] [2022-02-11 01:01:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:01:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:01:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 01:01:13,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:01:13,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595572720] [2022-02-11 01:01:13,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595572720] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:01:13,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396600656] [2022-02-11 01:01:13,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:01:13,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:13,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:01:13,183 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) [2022-02-11 01:01:13,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-11 01:01:13,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:01:13,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:01:13,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 01:01:13,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:01:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:13,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:13,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:13,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:13,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:13,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:13,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2022-02-11 01:01:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:13,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:01:14,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:14,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:14,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:14,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:14,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:14,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:14,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:14,260 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:01:14,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 98 [2022-02-11 01:01:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:14,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396600656] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:01:14,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:01:14,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 45 [2022-02-11 01:01:14,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140678278] [2022-02-11 01:01:14,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:01:14,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-11 01:01:14,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:01:14,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-11 01:01:14,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1717, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:01:14,585 INFO L87 Difference]: Start difference. First operand 20798 states and 56417 transitions. Second operand has 45 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 45 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:27,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:01:27,488 INFO L93 Difference]: Finished difference Result 54650 states and 147257 transitions. [2022-02-11 01:01:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 325 states. [2022-02-11 01:01:27,488 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 45 states have internal predecessors, (98), 0 states have call successors, (0), 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 37 [2022-02-11 01:01:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:01:27,696 INFO L225 Difference]: With dead ends: 54650 [2022-02-11 01:01:27,696 INFO L226 Difference]: Without dead ends: 53564 [2022-02-11 01:01:27,700 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59804 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=19529, Invalid=114061, Unknown=0, NotChecked=0, Total=133590 [2022-02-11 01:01:27,701 INFO L934 BasicCegarLoop]: 89 mSDtfsCounter, 1205 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 4671 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 5926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 4671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 666 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:01:27,701 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 1691 Invalid, 5926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 4671 Invalid, 0 Unknown, 666 Unchecked, 1.7s Time] [2022-02-11 01:01:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53564 states. [2022-02-11 01:01:28,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53564 to 22756. [2022-02-11 01:01:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22756 states, 22755 states have (on average 2.711008569545155) internal successors, (61689), 22755 states have internal predecessors, (61689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22756 states to 22756 states and 61689 transitions. [2022-02-11 01:01:28,396 INFO L78 Accepts]: Start accepts. Automaton has 22756 states and 61689 transitions. Word has length 37 [2022-02-11 01:01:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:01:28,396 INFO L470 AbstractCegarLoop]: Abstraction has 22756 states and 61689 transitions. [2022-02-11 01:01:28,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 45 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 22756 states and 61689 transitions. [2022-02-11 01:01:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-11 01:01:28,430 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:01:28,430 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:01:28,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-11 01:01:28,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:28,644 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:01:28,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:01:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2073145783, now seen corresponding path program 30 times [2022-02-11 01:01:28,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:01:28,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015122540] [2022-02-11 01:01:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:01:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:01:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:28,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:01:28,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015122540] [2022-02-11 01:01:28,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015122540] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:01:28,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602642114] [2022-02-11 01:01:28,681 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:01:28,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:28,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:01:28,686 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) [2022-02-11 01:01:28,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-11 01:01:28,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:01:28,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:01:28,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-11 01:01:28,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:01:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:28,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:01:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:28,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602642114] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:01:28,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:01:28,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-02-11 01:01:28,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566222898] [2022-02-11 01:01:28,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:01:28,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 01:01:28,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:01:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 01:01:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-02-11 01:01:28,821 INFO L87 Difference]: Start difference. First operand 22756 states and 61689 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:01:29,125 INFO L93 Difference]: Finished difference Result 30249 states and 82841 transitions. [2022-02-11 01:01:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 01:01:29,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 40 [2022-02-11 01:01:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:01:29,191 INFO L225 Difference]: With dead ends: 30249 [2022-02-11 01:01:29,192 INFO L226 Difference]: Without dead ends: 30177 [2022-02-11 01:01:29,192 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-02-11 01:01:29,192 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 83 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:01:29,192 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 110 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:01:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30177 states. [2022-02-11 01:01:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30177 to 29234. [2022-02-11 01:01:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29234 states, 29233 states have (on average 2.7446721171279034) internal successors, (80235), 29233 states have internal predecessors, (80235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29234 states to 29234 states and 80235 transitions. [2022-02-11 01:01:29,764 INFO L78 Accepts]: Start accepts. Automaton has 29234 states and 80235 transitions. Word has length 40 [2022-02-11 01:01:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:01:29,764 INFO L470 AbstractCegarLoop]: Abstraction has 29234 states and 80235 transitions. [2022-02-11 01:01:29,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 29234 states and 80235 transitions. [2022-02-11 01:01:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:01:29,815 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:01:29,815 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:01:29,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-11 01:01:30,031 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,SelfDestructingSolverStorable32 [2022-02-11 01:01:30,032 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:01:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:01:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1650713771, now seen corresponding path program 31 times [2022-02-11 01:01:30,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:01:30,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777513681] [2022-02-11 01:01:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:01:30,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:01:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:30,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:01:30,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777513681] [2022-02-11 01:01:30,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777513681] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:01:30,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935808858] [2022-02-11 01:01:30,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:01:30,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:30,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:01:30,513 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) [2022-02-11 01:01:30,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-11 01:01:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:30,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:01:30,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:01:31,168 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-11 01:01:31,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:01:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:31,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:01:31,692 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:01:31,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 53 treesize of output 177 [2022-02-11 01:01:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:33,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935808858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:01:33,256 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:01:33,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 58 [2022-02-11 01:01:33,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366234901] [2022-02-11 01:01:33,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:01:33,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:01:33,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:01:33,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:01:33,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2904, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:01:33,257 INFO L87 Difference]: Start difference. First operand 29234 states and 80235 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:01:49,782 INFO L93 Difference]: Finished difference Result 44200 states and 117713 transitions. [2022-02-11 01:01:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 339 states. [2022-02-11 01:01:49,782 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:01:49,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:01:49,872 INFO L225 Difference]: With dead ends: 44200 [2022-02-11 01:01:49,872 INFO L226 Difference]: Without dead ends: 42253 [2022-02-11 01:01:49,879 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64716 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=21746, Invalid=132310, Unknown=0, NotChecked=0, Total=154056 [2022-02-11 01:01:49,879 INFO L934 BasicCegarLoop]: 89 mSDtfsCounter, 2342 mSDsluCounter, 4675 mSDsCounter, 0 mSdLazyCounter, 8694 mSolverCounterSat, 893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 9587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 893 IncrementalHoareTripleChecker+Valid, 8694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:01:49,879 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 2391 Invalid, 9587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [893 Valid, 8694 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-11 01:01:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42253 states. [2022-02-11 01:01:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42253 to 30116. [2022-02-11 01:01:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30116 states, 30115 states have (on average 2.74394819857214) internal successors, (82634), 30115 states have internal predecessors, (82634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30116 states to 30116 states and 82634 transitions. [2022-02-11 01:01:50,653 INFO L78 Accepts]: Start accepts. Automaton has 30116 states and 82634 transitions. Word has length 43 [2022-02-11 01:01:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:01:50,653 INFO L470 AbstractCegarLoop]: Abstraction has 30116 states and 82634 transitions. [2022-02-11 01:01:50,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 30116 states and 82634 transitions. [2022-02-11 01:01:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:01:50,698 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:01:50,698 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:01:50,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-11 01:01:50,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:50,900 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:01:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:01:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1112247061, now seen corresponding path program 32 times [2022-02-11 01:01:50,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:01:50,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961333769] [2022-02-11 01:01:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:01:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:01:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:51,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:01:51,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961333769] [2022-02-11 01:01:51,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961333769] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:01:51,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608225072] [2022-02-11 01:01:51,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:01:51,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:01:51,315 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) [2022-02-11 01:01:51,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-11 01:01:51,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:01:51,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:01:51,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:01:51,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:01:52,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:52,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:52,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:52,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:52,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:52,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:52,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:52,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:01:52,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:52,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2022-02-11 01:01:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:52,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:01:52,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:52,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:52,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:52,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:01:53,054 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:01:53,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 13 case distinctions, treesize of input 49 treesize of output 153 [2022-02-11 01:01:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:53,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608225072] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:01:53,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:01:53,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 58 [2022-02-11 01:01:53,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445938622] [2022-02-11 01:01:53,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:01:53,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:01:53,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:01:53,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:01:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2802, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:01:53,727 INFO L87 Difference]: Start difference. First operand 30116 states and 82634 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:07,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:02:07,440 INFO L93 Difference]: Finished difference Result 42109 states and 115194 transitions. [2022-02-11 01:02:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2022-02-11 01:02:07,441 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:02:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:02:07,528 INFO L225 Difference]: With dead ends: 42109 [2022-02-11 01:02:07,529 INFO L226 Difference]: Without dead ends: 42066 [2022-02-11 01:02:07,532 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 96 SyntacticMatches, 28 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30717 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=9279, Invalid=60153, Unknown=0, NotChecked=0, Total=69432 [2022-02-11 01:02:07,532 INFO L934 BasicCegarLoop]: 36 mSDtfsCounter, 633 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 5953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4978 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:02:07,532 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 1035 Invalid, 5953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 897 Invalid, 0 Unknown, 4978 Unchecked, 0.3s Time] [2022-02-11 01:02:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42066 states. [2022-02-11 01:02:08,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42066 to 30630. [2022-02-11 01:02:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30630 states, 30629 states have (on average 2.743151914851938) internal successors, (84020), 30629 states have internal predecessors, (84020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30630 states to 30630 states and 84020 transitions. [2022-02-11 01:02:08,213 INFO L78 Accepts]: Start accepts. Automaton has 30630 states and 84020 transitions. Word has length 43 [2022-02-11 01:02:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:02:08,214 INFO L470 AbstractCegarLoop]: Abstraction has 30630 states and 84020 transitions. [2022-02-11 01:02:08,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 30630 states and 84020 transitions. [2022-02-11 01:02:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:02:08,259 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:02:08,259 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:02:08,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-11 01:02:08,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:02:08,491 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:02:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:02:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -129342371, now seen corresponding path program 33 times [2022-02-11 01:02:08,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:02:08,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619073384] [2022-02-11 01:02:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:02:08,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:02:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:02:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:08,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:02:08,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619073384] [2022-02-11 01:02:08,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619073384] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:02:08,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677659984] [2022-02-11 01:02:08,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:02:08,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:02:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:02:08,845 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) [2022-02-11 01:02:08,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-11 01:02:08,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:02:08,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:02:08,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-11 01:02:08,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:02:09,596 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-11 01:02:09,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:02:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:09,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:02:10,344 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:02:10,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 52 treesize of output 176 [2022-02-11 01:02:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:12,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677659984] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:02:12,346 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:02:12,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 58 [2022-02-11 01:02:12,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503925513] [2022-02-11 01:02:12,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:02:12,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:02:12,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:02:12,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:02:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2914, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:02:12,347 INFO L87 Difference]: Start difference. First operand 30630 states and 84020 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:46,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:02:46,627 INFO L93 Difference]: Finished difference Result 55936 states and 147102 transitions. [2022-02-11 01:02:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 596 states. [2022-02-11 01:02:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:02:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:02:46,752 INFO L225 Difference]: With dead ends: 55936 [2022-02-11 01:02:46,752 INFO L226 Difference]: Without dead ends: 53473 [2022-02-11 01:02:46,769 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 648 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189462 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=52090, Invalid=369760, Unknown=0, NotChecked=0, Total=421850 [2022-02-11 01:02:46,769 INFO L934 BasicCegarLoop]: 97 mSDtfsCounter, 1682 mSDsluCounter, 6005 mSDsCounter, 0 mSdLazyCounter, 12509 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 13433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 12509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:02:46,769 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 2727 Invalid, 13433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 12509 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-02-11 01:02:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53473 states. [2022-02-11 01:02:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53473 to 30690. [2022-02-11 01:02:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30690 states, 30689 states have (on average 2.7449248916549904) internal successors, (84239), 30689 states have internal predecessors, (84239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30690 states to 30690 states and 84239 transitions. [2022-02-11 01:02:47,712 INFO L78 Accepts]: Start accepts. Automaton has 30690 states and 84239 transitions. Word has length 43 [2022-02-11 01:02:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:02:47,712 INFO L470 AbstractCegarLoop]: Abstraction has 30690 states and 84239 transitions. [2022-02-11 01:02:47,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 30690 states and 84239 transitions. [2022-02-11 01:02:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:02:47,761 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:02:47,761 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:02:47,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-11 01:02:47,975 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,SelfDestructingSolverStorable35 [2022-02-11 01:02:47,975 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:02:47,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:02:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2103614959, now seen corresponding path program 34 times [2022-02-11 01:02:47,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:02:47,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607230155] [2022-02-11 01:02:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:02:47,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:02:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:02:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:48,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:02:48,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607230155] [2022-02-11 01:02:48,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607230155] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:02:48,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531783771] [2022-02-11 01:02:48,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:02:48,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:02:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:02:48,306 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) [2022-02-11 01:02:48,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-11 01:02:48,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:02:48,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:02:48,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:02:48,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:02:49,106 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-11 01:02:49,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:02:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:49,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:02:49,787 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:02:49,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 53 treesize of output 177 [2022-02-11 01:02:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:51,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531783771] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:02:51,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:02:51,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 58 [2022-02-11 01:02:51,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523977395] [2022-02-11 01:02:51,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:02:51,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:02:51,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:02:51,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:02:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2922, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:02:51,589 INFO L87 Difference]: Start difference. First operand 30690 states and 84239 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:27,833 INFO L93 Difference]: Finished difference Result 58865 states and 154985 transitions. [2022-02-11 01:03:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 628 states. [2022-02-11 01:03:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:03:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:27,972 INFO L225 Difference]: With dead ends: 58865 [2022-02-11 01:03:27,972 INFO L226 Difference]: Without dead ends: 56451 [2022-02-11 01:03:27,988 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 680 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210674 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=53546, Invalid=410896, Unknown=0, NotChecked=0, Total=464442 [2022-02-11 01:03:27,990 INFO L934 BasicCegarLoop]: 117 mSDtfsCounter, 1732 mSDsluCounter, 5833 mSDsCounter, 0 mSdLazyCounter, 11059 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 12080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 11059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:27,990 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1732 Valid, 2854 Invalid, 12080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1021 Valid, 11059 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-02-11 01:03:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56451 states. [2022-02-11 01:03:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56451 to 31926. [2022-02-11 01:03:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31926 states, 31925 states have (on average 2.74894283476899) internal successors, (87760), 31925 states have internal predecessors, (87760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31926 states to 31926 states and 87760 transitions. [2022-02-11 01:03:28,954 INFO L78 Accepts]: Start accepts. Automaton has 31926 states and 87760 transitions. Word has length 43 [2022-02-11 01:03:28,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:28,954 INFO L470 AbstractCegarLoop]: Abstraction has 31926 states and 87760 transitions. [2022-02-11 01:03:28,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:28,955 INFO L276 IsEmpty]: Start isEmpty. Operand 31926 states and 87760 transitions. [2022-02-11 01:03:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:03:29,019 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:29,019 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:29,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-11 01:03:29,235 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,SelfDestructingSolverStorable36 [2022-02-11 01:03:29,235 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1987652953, now seen corresponding path program 35 times [2022-02-11 01:03:29,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:29,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815415328] [2022-02-11 01:03:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:29,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:29,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815415328] [2022-02-11 01:03:29,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815415328] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:29,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670010660] [2022-02-11 01:03:29,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:03:29,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:29,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:29,596 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) [2022-02-11 01:03:29,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-11 01:03:29,625 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:03:29,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:29,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 01:03:29,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:30,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:30,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:30,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:30,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:30,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:30,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2022-02-11 01:03:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:30,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:31,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:31,360 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:03:31,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 129 [2022-02-11 01:03:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:31,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670010660] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:31,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:31,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 58 [2022-02-11 01:03:31,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861885900] [2022-02-11 01:03:31,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:31,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:03:31,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:31,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:03:31,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=2811, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:03:31,791 INFO L87 Difference]: Start difference. First operand 31926 states and 87760 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:09,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:09,724 INFO L93 Difference]: Finished difference Result 109906 states and 296717 transitions. [2022-02-11 01:04:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 575 states. [2022-02-11 01:04:09,724 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:04:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:10,144 INFO L225 Difference]: With dead ends: 109906 [2022-02-11 01:04:10,144 INFO L226 Difference]: Without dead ends: 108076 [2022-02-11 01:04:10,157 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 149 SyntacticMatches, 54 SemanticMatches, 616 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 194353 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=50892, Invalid=330414, Unknown=0, NotChecked=0, Total=381306 [2022-02-11 01:04:10,158 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 1729 mSDsluCounter, 9182 mSDsCounter, 0 mSdLazyCounter, 6348 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 24523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 6348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17424 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:10,158 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 2953 Invalid, 24523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 6348 Invalid, 0 Unknown, 17424 Unchecked, 2.5s Time] [2022-02-11 01:04:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108076 states. [2022-02-11 01:04:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108076 to 39267. [2022-02-11 01:04:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39267 states, 39266 states have (on average 2.752355727601487) internal successors, (108074), 39266 states have internal predecessors, (108074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39267 states to 39267 states and 108074 transitions. [2022-02-11 01:04:11,747 INFO L78 Accepts]: Start accepts. Automaton has 39267 states and 108074 transitions. Word has length 43 [2022-02-11 01:04:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:11,747 INFO L470 AbstractCegarLoop]: Abstraction has 39267 states and 108074 transitions. [2022-02-11 01:04:11,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 39267 states and 108074 transitions. [2022-02-11 01:04:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:04:11,804 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:11,804 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:11,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-11 01:04:12,023 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,SelfDestructingSolverStorable37 [2022-02-11 01:04:12,024 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:04:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1298369877, now seen corresponding path program 36 times [2022-02-11 01:04:12,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:12,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686684277] [2022-02-11 01:04:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:12,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:12,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:12,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686684277] [2022-02-11 01:04:12,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686684277] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:12,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70423906] [2022-02-11 01:04:12,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:04:12,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:12,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:12,386 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) [2022-02-11 01:04:12,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-11 01:04:12,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:04:12,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:04:12,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:04:12,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:12,980 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-11 01:04:12,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:04:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:13,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:13,487 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:04:13,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 53 treesize of output 177 [2022-02-11 01:04:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:15,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70423906] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:15,536 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:15,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 58 [2022-02-11 01:04:15,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264418968] [2022-02-11 01:04:15,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:15,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:04:15,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:04:15,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=2915, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:04:15,537 INFO L87 Difference]: Start difference. First operand 39267 states and 108074 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:48,457 INFO L93 Difference]: Finished difference Result 77276 states and 205583 transitions. [2022-02-11 01:04:48,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 609 states. [2022-02-11 01:04:48,457 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:04:48,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:48,639 INFO L225 Difference]: With dead ends: 77276 [2022-02-11 01:04:48,640 INFO L226 Difference]: Without dead ends: 73306 [2022-02-11 01:04:48,653 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 661 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204061 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=56273, Invalid=382633, Unknown=0, NotChecked=0, Total=438906 [2022-02-11 01:04:48,654 INFO L934 BasicCegarLoop]: 97 mSDtfsCounter, 2233 mSDsluCounter, 5723 mSDsCounter, 0 mSdLazyCounter, 11275 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 12368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 11275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:48,654 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2233 Valid, 2675 Invalid, 12368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1093 Valid, 11275 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-02-11 01:04:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73306 states. [2022-02-11 01:04:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73306 to 39944. [2022-02-11 01:04:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39944 states, 39943 states have (on average 2.7510202037904015) internal successors, (109884), 39943 states have internal predecessors, (109884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39944 states to 39944 states and 109884 transitions. [2022-02-11 01:04:49,902 INFO L78 Accepts]: Start accepts. Automaton has 39944 states and 109884 transitions. Word has length 43 [2022-02-11 01:04:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:49,902 INFO L470 AbstractCegarLoop]: Abstraction has 39944 states and 109884 transitions. [2022-02-11 01:04:49,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 39944 states and 109884 transitions. [2022-02-11 01:04:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:04:49,963 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:49,963 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:49,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-11 01:04:50,179 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,SelfDestructingSolverStorable38 [2022-02-11 01:04:50,179 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:04:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash -347552145, now seen corresponding path program 37 times [2022-02-11 01:04:50,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:50,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219819939] [2022-02-11 01:04:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:50,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:50,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219819939] [2022-02-11 01:04:50,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219819939] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:50,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478673656] [2022-02-11 01:04:50,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:04:50,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:50,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:50,544 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) [2022-02-11 01:04:50,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-11 01:04:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:50,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:04:50,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:51,294 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-11 01:04:51,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:04:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:51,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:52,057 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:04:52,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 53 treesize of output 177 [2022-02-11 01:04:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:53,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478673656] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:53,536 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:53,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 58 [2022-02-11 01:04:53,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789171763] [2022-02-11 01:04:53,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:53,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:04:53,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:04:53,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2924, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:04:53,537 INFO L87 Difference]: Start difference. First operand 39944 states and 109884 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:05:32,946 INFO L93 Difference]: Finished difference Result 74377 states and 197725 transitions. [2022-02-11 01:05:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 681 states. [2022-02-11 01:05:32,947 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:05:32,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:05:33,139 INFO L225 Difference]: With dead ends: 74377 [2022-02-11 01:05:33,140 INFO L226 Difference]: Without dead ends: 71911 [2022-02-11 01:05:33,162 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 733 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253069 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=63799, Invalid=475691, Unknown=0, NotChecked=0, Total=539490 [2022-02-11 01:05:33,163 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 2318 mSDsluCounter, 5491 mSDsCounter, 0 mSdLazyCounter, 10838 mSolverCounterSat, 1284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 12122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1284 IncrementalHoareTripleChecker+Valid, 10838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:05:33,163 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 2628 Invalid, 12122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1284 Valid, 10838 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-02-11 01:05:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71911 states. [2022-02-11 01:05:34,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71911 to 41601. [2022-02-11 01:05:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41601 states, 41600 states have (on average 2.751658653846154) internal successors, (114469), 41600 states have internal predecessors, (114469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41601 states to 41601 states and 114469 transitions. [2022-02-11 01:05:34,452 INFO L78 Accepts]: Start accepts. Automaton has 41601 states and 114469 transitions. Word has length 43 [2022-02-11 01:05:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:05:34,452 INFO L470 AbstractCegarLoop]: Abstraction has 41601 states and 114469 transitions. [2022-02-11 01:05:34,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 41601 states and 114469 transitions. [2022-02-11 01:05:34,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:05:34,512 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:05:34,512 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:05:34,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-11 01:05:34,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-11 01:05:34,727 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:05:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:05:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1338920043, now seen corresponding path program 38 times [2022-02-11 01:05:34,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:05:34,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301924550] [2022-02-11 01:05:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:05:34,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:05:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:05:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:35,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:05:35,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301924550] [2022-02-11 01:05:35,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301924550] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:05:35,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446441770] [2022-02-11 01:05:35,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:05:35,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:05:35,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:05:35,137 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) [2022-02-11 01:05:35,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-11 01:05:35,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:05:35,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:05:35,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:05:35,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:05:35,745 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-11 01:05:35,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:05:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:35,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:05:36,505 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:05:36,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 53 treesize of output 177 [2022-02-11 01:05:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:38,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446441770] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:05:38,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:05:38,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 58 [2022-02-11 01:05:38,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864407240] [2022-02-11 01:05:38,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:05:38,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:05:38,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:05:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:05:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2931, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:05:38,261 INFO L87 Difference]: Start difference. First operand 41601 states and 114469 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:20,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:06:20,188 INFO L93 Difference]: Finished difference Result 80180 states and 214363 transitions. [2022-02-11 01:06:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 669 states. [2022-02-11 01:06:20,188 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:06:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:06:20,452 INFO L225 Difference]: With dead ends: 80180 [2022-02-11 01:06:20,452 INFO L226 Difference]: Without dead ends: 77738 [2022-02-11 01:06:20,469 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 721 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241181 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=57988, Invalid=464018, Unknown=0, NotChecked=0, Total=522006 [2022-02-11 01:06:20,477 INFO L934 BasicCegarLoop]: 125 mSDtfsCounter, 1864 mSDsluCounter, 7927 mSDsCounter, 0 mSdLazyCounter, 14440 mSolverCounterSat, 1169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 3885 SdHoareTripleChecker+Invalid, 15609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1169 IncrementalHoareTripleChecker+Valid, 14440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:06:20,477 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 3885 Invalid, 15609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1169 Valid, 14440 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-02-11 01:06:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77738 states. [2022-02-11 01:06:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77738 to 43505. [2022-02-11 01:06:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43505 states, 43504 states have (on average 2.7517929385803606) internal successors, (119714), 43504 states have internal predecessors, (119714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43505 states to 43505 states and 119714 transitions. [2022-02-11 01:06:21,715 INFO L78 Accepts]: Start accepts. Automaton has 43505 states and 119714 transitions. Word has length 43 [2022-02-11 01:06:21,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:06:21,715 INFO L470 AbstractCegarLoop]: Abstraction has 43505 states and 119714 transitions. [2022-02-11 01:06:21,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 58 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 43505 states and 119714 transitions. [2022-02-11 01:06:21,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:06:21,781 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:06:21,781 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:06:21,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-11 01:06:21,995 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,SelfDestructingSolverStorable40 [2022-02-11 01:06:21,996 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:06:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:06:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1399662073, now seen corresponding path program 39 times [2022-02-11 01:06:21,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:06:21,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670644937] [2022-02-11 01:06:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:06:21,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:06:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:06:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:22,300 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:06:22,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670644937] [2022-02-11 01:06:22,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670644937] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:06:22,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762830863] [2022-02-11 01:06:22,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:06:22,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:22,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:06:22,321 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) [2022-02-11 01:06:22,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-11 01:06:22,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 01:06:22,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:06:22,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-11 01:06:22,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:06:22,918 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-11 01:06:22,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:06:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:22,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:06:23,427 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:06:23,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 52 treesize of output 176 [2022-02-11 01:06:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:24,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762830863] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:06:24,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:06:24,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 57 [2022-02-11 01:06:24,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566257463] [2022-02-11 01:06:24,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:06:24,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-11 01:06:24,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:06:24,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-11 01:06:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2825, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:06:24,824 INFO L87 Difference]: Start difference. First operand 43505 states and 119714 transitions. Second operand has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:07:10,007 INFO L93 Difference]: Finished difference Result 102031 states and 273152 transitions. [2022-02-11 01:07:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 724 states. [2022-02-11 01:07:10,008 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:07:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:07:10,349 INFO L225 Difference]: With dead ends: 102031 [2022-02-11 01:07:10,350 INFO L226 Difference]: Without dead ends: 97662 [2022-02-11 01:07:10,374 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 775 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291006 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=75212, Invalid=527740, Unknown=0, NotChecked=0, Total=602952 [2022-02-11 01:07:10,374 INFO L934 BasicCegarLoop]: 139 mSDtfsCounter, 2560 mSDsluCounter, 5809 mSDsCounter, 0 mSdLazyCounter, 11187 mSolverCounterSat, 1334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 12521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1334 IncrementalHoareTripleChecker+Valid, 11187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:07:10,374 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2560 Valid, 3011 Invalid, 12521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1334 Valid, 11187 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-02-11 01:07:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97662 states. [2022-02-11 01:07:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97662 to 53307. [2022-02-11 01:07:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53307 states, 53306 states have (on average 2.7496154279068024) internal successors, (146571), 53306 states have internal predecessors, (146571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53307 states to 53307 states and 146571 transitions. [2022-02-11 01:07:12,063 INFO L78 Accepts]: Start accepts. Automaton has 53307 states and 146571 transitions. Word has length 43 [2022-02-11 01:07:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:07:12,063 INFO L470 AbstractCegarLoop]: Abstraction has 53307 states and 146571 transitions. [2022-02-11 01:07:12,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 53307 states and 146571 transitions. [2022-02-11 01:07:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:07:12,127 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:07:12,127 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:07:12,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-11 01:07:12,342 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,SelfDestructingSolverStorable41 [2022-02-11 01:07:12,342 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:07:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:07:12,343 INFO L85 PathProgramCache]: Analyzing trace with hash 408294175, now seen corresponding path program 40 times [2022-02-11 01:07:12,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:07:12,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491246317] [2022-02-11 01:07:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:07:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:07:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:07:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:12,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:07:12,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491246317] [2022-02-11 01:07:12,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491246317] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:07:12,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650055125] [2022-02-11 01:07:12,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:07:12,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:07:12,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:07:12,768 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) [2022-02-11 01:07:12,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-11 01:07:12,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:07:12,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:07:12,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:07:12,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:07:13,447 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-02-11 01:07:13,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:07:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:13,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:07:14,136 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-02-11 01:07:14,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 53 treesize of output 177 [2022-02-11 01:07:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:15,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650055125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:07:15,523 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:07:15,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 57 [2022-02-11 01:07:15,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565059588] [2022-02-11 01:07:15,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:07:15,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-11 01:07:15,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:07:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-11 01:07:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2832, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:07:15,531 INFO L87 Difference]: Start difference. First operand 53307 states and 146571 transitions. Second operand has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:08:00,842 INFO L93 Difference]: Finished difference Result 112332 states and 302132 transitions. [2022-02-11 01:08:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 719 states. [2022-02-11 01:08:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:08:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:08:01,205 INFO L225 Difference]: With dead ends: 112332 [2022-02-11 01:08:01,206 INFO L226 Difference]: Without dead ends: 110077 [2022-02-11 01:08:01,228 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 770 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283179 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=68005, Invalid=527207, Unknown=0, NotChecked=0, Total=595212 [2022-02-11 01:08:01,229 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 2342 mSDsluCounter, 8424 mSDsCounter, 0 mSdLazyCounter, 14678 mSolverCounterSat, 1402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 16080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1402 IncrementalHoareTripleChecker+Valid, 14678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:08:01,229 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 4318 Invalid, 16080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1402 Valid, 14678 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-02-11 01:08:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110077 states. [2022-02-11 01:08:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110077 to 65673. [2022-02-11 01:08:03,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65673 states, 65672 states have (on average 2.746238884151541) internal successors, (180351), 65672 states have internal predecessors, (180351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65673 states to 65673 states and 180351 transitions. [2022-02-11 01:08:03,288 INFO L78 Accepts]: Start accepts. Automaton has 65673 states and 180351 transitions. Word has length 43 [2022-02-11 01:08:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:08:03,288 INFO L470 AbstractCegarLoop]: Abstraction has 65673 states and 180351 transitions. [2022-02-11 01:08:03,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 65673 states and 180351 transitions. [2022-02-11 01:08:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:08:03,393 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:08:03,393 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:08:03,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-11 01:08:03,609 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,SelfDestructingSolverStorable42 [2022-02-11 01:08:03,609 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:08:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:08:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash 524256181, now seen corresponding path program 41 times [2022-02-11 01:08:03,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:08:03,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51773937] [2022-02-11 01:08:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:08:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:08:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:08:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:08:03,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:08:03,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51773937] [2022-02-11 01:08:03,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51773937] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:08:03,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592337701] [2022-02-11 01:08:03,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:08:03,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:08:03,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:08:03,928 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) [2022-02-11 01:08:03,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-11 01:08:03,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:08:03,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:08:03,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:08:03,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:08:04,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:04,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-02-11 01:08:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:08:04,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:08:04,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:04,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:08:05,018 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:08:05,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 135 [2022-02-11 01:08:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:08:05,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592337701] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:08:05,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:08:05,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 57 [2022-02-11 01:08:05,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254358222] [2022-02-11 01:08:05,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:08:05,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-11 01:08:05,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:08:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-11 01:08:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=2719, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:08:05,397 INFO L87 Difference]: Start difference. First operand 65673 states and 180351 transitions. Second operand has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:08:58,875 INFO L93 Difference]: Finished difference Result 207745 states and 564886 transitions. [2022-02-11 01:08:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 746 states. [2022-02-11 01:08:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 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 43 [2022-02-11 01:08:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:08:59,776 INFO L225 Difference]: With dead ends: 207745 [2022-02-11 01:08:59,777 INFO L226 Difference]: Without dead ends: 205148 [2022-02-11 01:08:59,800 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 797 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318917 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=84137, Invalid=553465, Unknown=0, NotChecked=0, Total=637602 [2022-02-11 01:08:59,800 INFO L934 BasicCegarLoop]: 193 mSDtfsCounter, 2854 mSDsluCounter, 7950 mSDsCounter, 0 mSdLazyCounter, 10880 mSolverCounterSat, 1672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 4905 SdHoareTripleChecker+Invalid, 13932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1672 IncrementalHoareTripleChecker+Valid, 10880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1380 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:08:59,800 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2854 Valid, 4905 Invalid, 13932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1672 Valid, 10880 Invalid, 0 Unknown, 1380 Unchecked, 5.0s Time] [2022-02-11 01:08:59,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205148 states. [2022-02-11 01:09:02,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205148 to 88221. [2022-02-11 01:09:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88221 states, 88220 states have (on average 2.7488097936975744) internal successors, (242500), 88220 states have internal predecessors, (242500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88221 states to 88221 states and 242500 transitions. [2022-02-11 01:09:03,702 INFO L78 Accepts]: Start accepts. Automaton has 88221 states and 242500 transitions. Word has length 43 [2022-02-11 01:09:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:03,703 INFO L470 AbstractCegarLoop]: Abstraction has 88221 states and 242500 transitions. [2022-02-11 01:09:03,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.9473684210526316) internal successors, (111), 57 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 88221 states and 242500 transitions. [2022-02-11 01:09:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:09:03,854 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:03,854 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:03,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:04,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:04,070 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:09:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash -138281515, now seen corresponding path program 42 times [2022-02-11 01:09:04,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:04,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040851256] [2022-02-11 01:09:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:04,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:09:04,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:04,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040851256] [2022-02-11 01:09:04,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040851256] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:04,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042097895] [2022-02-11 01:09:04,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:09:04,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:04,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:04,436 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) [2022-02-11 01:09:04,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-11 01:09:04,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:09:04,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:04,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-11 01:09:04,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:05,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:05,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:05,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:05,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:05,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:05,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:05,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:05,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:09:05,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 22 [2022-02-11 01:09:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:05,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:06,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:09:06,344 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:06,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 127 [2022-02-11 01:09:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:07,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042097895] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:07,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:07,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 56 [2022-02-11 01:09:07,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425809286] [2022-02-11 01:09:07,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:07,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-11 01:09:07,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:07,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-11 01:09:07,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2613, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 01:09:07,082 INFO L87 Difference]: Start difference. First operand 88221 states and 242500 transitions. Second operand has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 states have internal predecessors, (111), 0 states have call successors, (0), 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... [2022-02-11 01:09:46,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 532 states. [2022-02-11 01:09:46,139 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 199 SyntacticMatches, 161 SemanticMatches, 564 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195869 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=44704, Invalid=275086, Unknown=0, NotChecked=0, Total=319790 [2022-02-11 01:09:46,140 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 993 mSDsluCounter, 4632 mSDsCounter, 0 mSdLazyCounter, 3886 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 20782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 3886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16349 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:46,140 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 717 Invalid, 20782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 3886 Invalid, 0 Unknown, 16349 Unchecked, 1.6s Time] [2022-02-11 01:09:46,141 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-11 01:09:46,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-02-11 01:09:46,167 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 [2022-02-11 01:09:46,172 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 [2022-02-11 01:09:46,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:46,357 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (88221states) and FLOYD_HOARE automaton (currently 532 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 566 known predicates. [2022-02-11 01:09:46,358 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-11 01:09:46,358 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-11 01:09:46,358 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-11 01:09:46,360 INFO L733 BasicCegarLoop]: Path program histogram: [42, 2, 1] [2022-02-11 01:09:46,362 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 01:09:46,362 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 01:09:46,365 INFO L202 PluginConnector]: Adding new model prod-cons.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 01:09:46 BasicIcfg [2022-02-11 01:09:46,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 01:09:46,366 INFO L158 Benchmark]: Toolchain (without parser) took 851905.51ms. Allocated memory was 221.2MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 186.1MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2022-02-11 01:09:46,366 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 221.2MB. Free memory was 187.3MB in the beginning and 187.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 01:09:46,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.47ms. Allocated memory is still 221.2MB. Free memory was 186.1MB in the beginning and 184.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-11 01:09:46,371 INFO L158 Benchmark]: Boogie Preprocessor took 14.71ms. Allocated memory is still 221.2MB. Free memory was 184.5MB in the beginning and 183.7MB in the end (delta: 816.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 01:09:46,371 INFO L158 Benchmark]: RCFGBuilder took 181.07ms. Allocated memory is still 221.2MB. Free memory was 183.6MB in the beginning and 173.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-11 01:09:46,371 INFO L158 Benchmark]: TraceAbstraction took 851684.80ms. Allocated memory was 221.2MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 173.1MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2022-02-11 01:09:46,371 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 0.11ms. Allocated memory is still 221.2MB. Free memory was 187.3MB in the beginning and 187.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.47ms. Allocated memory is still 221.2MB. Free memory was 186.1MB in the beginning and 184.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.71ms. Allocated memory is still 221.2MB. Free memory was 184.5MB in the beginning and 183.7MB in the end (delta: 816.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 181.07ms. Allocated memory is still 221.2MB. Free memory was 183.6MB in the beginning and 173.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 851684.80ms. Allocated memory was 221.2MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 173.1MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 1.2GB. 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: 64]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (88221states) and FLOYD_HOARE automaton (currently 532 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 566 known predicates. - TimeoutResultAtElement [Line: 58]: 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 (88221states) and FLOYD_HOARE automaton (currently 532 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 566 known predicates. - TimeoutResultAtElement [Line: 57]: 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 (88221states) and FLOYD_HOARE automaton (currently 532 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 566 known predicates. - TimeoutResultAtElement [Line: 57]: 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 (88221states) and FLOYD_HOARE automaton (currently 532 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 566 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 45 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 851.6s, OverallIterations: 45, TraceHistogramMax: 4, PathProgramHistogramMax: 42, EmptinessCheckTime: 1.2s, AutomataDifference: 742.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56058 SdHoareTripleChecker+Valid, 95.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56058 mSDsluCounter, 68991 SdHoareTripleChecker+Invalid, 81.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 43473 IncrementalHoareTripleChecker+Unchecked, 142147 mSDsCounter, 27930 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 231386 IncrementalHoareTripleChecker+Invalid, 302789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27930 mSolverCounterUnsat, 3231 mSDtfsCounter, 231386 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18373 GetRequests, 2380 SyntacticMatches, 276 SemanticMatches, 15716 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3694895 ImplicationChecksByTransitivity, 632.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88221occurred in iteration=44, InterpolantAutomatonStates: 13676, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.3s AutomataMinimizationTime, 44 MinimizatonAttempts, 762881 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 73.1s InterpolantComputationTime, 3198 NumberOfCodeBlocks, 3198 NumberOfCodeBlocksAsserted, 164 NumberOfCheckSat, 4638 ConstructedInterpolants, 128 QuantifiedInterpolants, 66966 SizeOfPredicates, 519 NumberOfNonLiveVariables, 3820 ConjunctsInSsa, 1073 ConjunctsInUnsatCore, 129 InterpolantComputations, 3 PerfectInterpolantSequences, 290/3382 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