/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/bench/exp2x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 00:13:58,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 00:13:58,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 00:13:58,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-11 00:13:58,192 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 00:13:58,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 00:13:58,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 00:13:58,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 00:13:58,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 00:13:58,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 00:13:58,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 00:13:58,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 00:13:58,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 00:13:58,220 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 00:13:58,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 00:13:58,221 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 00:13:58,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 00:13:58,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 00:13:58,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 00:13:58,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 00:13:58,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 00:13:58,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 00:13:58,222 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 00:13:58,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 00:13:58,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 00:13:58,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 00:13:58,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 00:13:58,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 00:13:58,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 00:13:58,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 00:13:58,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:13:58,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 00:13:58,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 00:13:58,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 00:13:58,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 00:13:58,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 00:13:58,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 00:13:58,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 00:13:58,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 00:13:58,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 00:13:58,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 00:13:58,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 00:13:58,455 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 00:13:58,457 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 00:13:58,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x3.wvr.bpl [2022-02-11 00:13:58,459 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x3.wvr.bpl' [2022-02-11 00:13:58,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 00:13:58,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 00:13:58,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 00:13:58,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 00:13:58,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 00:13:58,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,508 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 00:13:58,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 00:13:58,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 00:13:58,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 00:13:58,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 00:13:58,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 00:13:58,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 00:13:58,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 00:13:58,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 00:13:58,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/1) ... [2022-02-11 00:13:58,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:13:58,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:13:58,560 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 00:13:58,585 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 00:13:58,603 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 00:13:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 00:13:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 00:13:58,604 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 00:13:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 00:13:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 00:13:58,604 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 00:13:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 00:13:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 00:13:58,605 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-11 00:13:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-11 00:13:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-11 00:13:58,605 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-02-11 00:13:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-02-11 00:13:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-02-11 00:13:58,606 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 00:13:58,649 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 00:13:58,650 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 00:13:58,736 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 00:13:58,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 00:13:58,743 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-11 00:13:58,744 INFO L202 PluginConnector]: Adding new model exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:13:58 BoogieIcfgContainer [2022-02-11 00:13:58,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 00:13:58,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 00:13:58,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 00:13:58,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 00:13:58,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:13:58" (1/2) ... [2022-02-11 00:13:58,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109f6e1e and model type exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 12:13:58, skipping insertion in model container [2022-02-11 00:13:58,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:13:58" (2/2) ... [2022-02-11 00:13:58,752 INFO L112 eAbstractionObserver]: Analyzing ICFG exp2x3.wvr.bpl [2022-02-11 00:13:58,756 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 00:13:58,756 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 00:13:58,757 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 00:13:58,757 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 00:13:58,811 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-11 00:13:58,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 00:13:58,900 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 00:13:58,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-11 00:13:58,925 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 98 flow [2022-02-11 00:13:59,030 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 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 00:13:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 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 00:13:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-11 00:13:59,054 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:13:59,055 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 00:13:59,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:13:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:13:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash 768516577, now seen corresponding path program 1 times [2022-02-11 00:13:59,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:13:59,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65365504] [2022-02-11 00:13:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:13:59,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:13:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:13:59,229 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 00:13:59,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:13:59,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65365504] [2022-02-11 00:13:59,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65365504] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:13:59,231 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:13:59,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-11 00:13:59,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363375486] [2022-02-11 00:13:59,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:13:59,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 00:13:59,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:13:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 00:13:59,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:13:59,271 INFO L87 Difference]: Start difference. First operand has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 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), 2 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 00:13:59,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:13:59,363 INFO L93 Difference]: Finished difference Result 854 states and 3302 transitions. [2022-02-11 00:13:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 00:13:59,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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 00:13:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:13:59,390 INFO L225 Difference]: With dead ends: 854 [2022-02-11 00:13:59,391 INFO L226 Difference]: Without dead ends: 823 [2022-02-11 00:13:59,401 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 00:13:59,406 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:13:59,407 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:13:59,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-02-11 00:13:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 558. [2022-02-11 00:13:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 3.8545780969479355) internal successors, (2147), 557 states have internal predecessors, (2147), 0 states have call successors, (0), 0 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 00:13:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 2147 transitions. [2022-02-11 00:13:59,541 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 2147 transitions. Word has length 19 [2022-02-11 00:13:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:13:59,542 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 2147 transitions. [2022-02-11 00:13:59,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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 00:13:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 2147 transitions. [2022-02-11 00:13:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:13:59,546 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:13:59,546 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] [2022-02-11 00:13:59,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 00:13:59,548 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:13:59,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:13:59,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1817520191, now seen corresponding path program 1 times [2022-02-11 00:13:59,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:13:59,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783840012] [2022-02-11 00:13:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:13:59,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:13:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:13:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:59,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:13:59,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783840012] [2022-02-11 00:13:59,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783840012] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:13:59,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121073180] [2022-02-11 00:13:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:13:59,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:13:59,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:13:59,639 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 00:13:59,650 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 00:13:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:13:59,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-11 00:13:59,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:13:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:59,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:13:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:59,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121073180] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:13:59,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:13:59,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-02-11 00:13:59,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851180837] [2022-02-11 00:13:59,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:13:59,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:13:59,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:13:59,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:13:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:13:59,882 INFO L87 Difference]: Start difference. First operand 558 states and 2147 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:00,036 INFO L93 Difference]: Finished difference Result 1354 states and 5079 transitions. [2022-02-11 00:14:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:14:00,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:14:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:00,047 INFO L225 Difference]: With dead ends: 1354 [2022-02-11 00:14:00,047 INFO L226 Difference]: Without dead ends: 1354 [2022-02-11 00:14:00,048 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:00,049 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 108 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:00,051 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-02-11 00:14:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 687. [2022-02-11 00:14:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 3.956268221574344) internal successors, (2714), 686 states have internal predecessors, (2714), 0 states have call successors, (0), 0 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 00:14:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 2714 transitions. [2022-02-11 00:14:00,106 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 2714 transitions. Word has length 21 [2022-02-11 00:14:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:00,107 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 2714 transitions. [2022-02-11 00:14:00,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 2714 transitions. [2022-02-11 00:14:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:14:00,110 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:00,111 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] [2022-02-11 00:14:00,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-11 00:14:00,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:00,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:00,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1420211201, now seen corresponding path program 1 times [2022-02-11 00:14:00,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:00,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422071180] [2022-02-11 00:14:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:00,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:00,378 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 00:14:00,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:00,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422071180] [2022-02-11 00:14:00,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422071180] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:14:00,379 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:14:00,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:14:00,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282589339] [2022-02-11 00:14:00,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:14:00,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 00:14:00,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 00:14:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:14:00,381 INFO L87 Difference]: Start difference. First operand 687 states and 2714 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:00,436 INFO L93 Difference]: Finished difference Result 973 states and 3608 transitions. [2022-02-11 00:14:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:14:00,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:14:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:00,444 INFO L225 Difference]: With dead ends: 973 [2022-02-11 00:14:00,445 INFO L226 Difference]: Without dead ends: 953 [2022-02-11 00:14:00,447 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:14:00,449 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:00,453 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 31 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:14:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-02-11 00:14:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 775. [2022-02-11 00:14:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.8359173126614987) internal successors, (2969), 774 states have internal predecessors, (2969), 0 states have call successors, (0), 0 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 00:14:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2969 transitions. [2022-02-11 00:14:00,486 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2969 transitions. Word has length 21 [2022-02-11 00:14:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:00,486 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2969 transitions. [2022-02-11 00:14:00,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2969 transitions. [2022-02-11 00:14:00,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:14:00,490 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:00,490 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] [2022-02-11 00:14:00,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-11 00:14:00,491 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1433190623, now seen corresponding path program 1 times [2022-02-11 00:14:00,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:00,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208279807] [2022-02-11 00:14:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:00,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:00,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:00,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208279807] [2022-02-11 00:14:00,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208279807] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:00,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700865984] [2022-02-11 00:14:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:00,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:00,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:00,592 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 00:14:00,628 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 00:14:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:00,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-11 00:14:00,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:00,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:00,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700865984] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:00,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:00,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-02-11 00:14:00,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437194755] [2022-02-11 00:14:00,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:00,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:14:00,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:00,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:14:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:14:00,791 INFO L87 Difference]: Start difference. First operand 775 states and 2969 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 00:14:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:00,904 INFO L93 Difference]: Finished difference Result 1814 states and 6830 transitions. [2022-02-11 00:14:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:14:00,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:14:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:00,936 INFO L225 Difference]: With dead ends: 1814 [2022-02-11 00:14:00,937 INFO L226 Difference]: Without dead ends: 1814 [2022-02-11 00:14:00,937 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:00,939 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 76 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:00,940 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 61 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2022-02-11 00:14:00,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 990. [2022-02-11 00:14:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 3.969666329625885) internal successors, (3926), 989 states have internal predecessors, (3926), 0 states have call successors, (0), 0 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 00:14:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 3926 transitions. [2022-02-11 00:14:00,993 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 3926 transitions. Word has length 21 [2022-02-11 00:14:00,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:00,994 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 3926 transitions. [2022-02-11 00:14:00,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 00:14:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 3926 transitions. [2022-02-11 00:14:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:14:01,000 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:01,000 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] [2022-02-11 00:14:01,032 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 00:14:01,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-11 00:14:01,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:01,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:01,225 INFO L85 PathProgramCache]: Analyzing trace with hash -586124957, now seen corresponding path program 1 times [2022-02-11 00:14:01,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:01,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023398721] [2022-02-11 00:14:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:01,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:01,269 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 00:14:01,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:01,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023398721] [2022-02-11 00:14:01,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023398721] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:14:01,270 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:14:01,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:14:01,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903553844] [2022-02-11 00:14:01,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:14:01,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 00:14:01,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 00:14:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:14:01,272 INFO L87 Difference]: Start difference. First operand 990 states and 3926 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:01,328 INFO L93 Difference]: Finished difference Result 1344 states and 5052 transitions. [2022-02-11 00:14:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:14:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:14:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:01,344 INFO L225 Difference]: With dead ends: 1344 [2022-02-11 00:14:01,344 INFO L226 Difference]: Without dead ends: 1279 [2022-02-11 00:14:01,345 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:14:01,346 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:01,347 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:14:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-02-11 00:14:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1100. [2022-02-11 00:14:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.9008189262966333) internal successors, (4287), 1099 states have internal predecessors, (4287), 0 states have call successors, (0), 0 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 00:14:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4287 transitions. [2022-02-11 00:14:01,390 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4287 transitions. Word has length 21 [2022-02-11 00:14:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:01,390 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 4287 transitions. [2022-02-11 00:14:01,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4287 transitions. [2022-02-11 00:14:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:14:01,394 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:01,394 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] [2022-02-11 00:14:01,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-11 00:14:01,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:01,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2039889319, now seen corresponding path program 2 times [2022-02-11 00:14:01,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:01,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749054026] [2022-02-11 00:14:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:01,438 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 00:14:01,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:01,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749054026] [2022-02-11 00:14:01,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749054026] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:14:01,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:14:01,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:14:01,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446575920] [2022-02-11 00:14:01,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:14:01,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:14:01,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:14:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:01,440 INFO L87 Difference]: Start difference. First operand 1100 states and 4287 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:01,505 INFO L93 Difference]: Finished difference Result 1412 states and 5401 transitions. [2022-02-11 00:14:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:14:01,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:14:01,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:01,516 INFO L225 Difference]: With dead ends: 1412 [2022-02-11 00:14:01,516 INFO L226 Difference]: Without dead ends: 1412 [2022-02-11 00:14:01,516 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:01,517 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 54 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:01,518 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 32 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:14:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-02-11 00:14:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1174. [2022-02-11 00:14:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 3.9028132992327365) internal successors, (4578), 1173 states have internal predecessors, (4578), 0 states have call successors, (0), 0 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 00:14:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 4578 transitions. [2022-02-11 00:14:01,564 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 4578 transitions. Word has length 21 [2022-02-11 00:14:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:01,565 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 4578 transitions. [2022-02-11 00:14:01,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 4578 transitions. [2022-02-11 00:14:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:14:01,569 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:01,569 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] [2022-02-11 00:14:01,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-11 00:14:01,569 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash -104341599, now seen corresponding path program 2 times [2022-02-11 00:14:01,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:01,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562574784] [2022-02-11 00:14:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:01,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:01,623 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 00:14:01,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:01,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562574784] [2022-02-11 00:14:01,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562574784] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:14:01,623 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:14:01,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:14:01,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073818460] [2022-02-11 00:14:01,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:14:01,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:14:01,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:01,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:14:01,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:01,625 INFO L87 Difference]: Start difference. First operand 1174 states and 4578 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:01,696 INFO L93 Difference]: Finished difference Result 1589 states and 6051 transitions. [2022-02-11 00:14:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:14:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:14:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:01,708 INFO L225 Difference]: With dead ends: 1589 [2022-02-11 00:14:01,708 INFO L226 Difference]: Without dead ends: 1589 [2022-02-11 00:14:01,709 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:01,710 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:01,711 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 43 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-02-11 00:14:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1285. [2022-02-11 00:14:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 3.9088785046728973) internal successors, (5019), 1284 states have internal predecessors, (5019), 0 states have call successors, (0), 0 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 00:14:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 5019 transitions. [2022-02-11 00:14:01,765 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 5019 transitions. Word has length 21 [2022-02-11 00:14:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:01,765 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 5019 transitions. [2022-02-11 00:14:01,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 5019 transitions. [2022-02-11 00:14:01,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-11 00:14:01,771 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:01,771 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] [2022-02-11 00:14:01,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-11 00:14:01,772 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:01,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1270025759, now seen corresponding path program 1 times [2022-02-11 00:14:01,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:01,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693991055] [2022-02-11 00:14:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:01,832 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 00:14:01,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:01,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693991055] [2022-02-11 00:14:01,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693991055] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:01,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946851785] [2022-02-11 00:14:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:01,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:01,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:01,835 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 00:14:01,856 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 00:14:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:01,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:14:01,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:02,176 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 00:14:02,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:02,322 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 00:14:02,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946851785] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:02,323 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:02,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-02-11 00:14:02,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094487086] [2022-02-11 00:14:02,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:02,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:14:02,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:02,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:14:02,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:02,324 INFO L87 Difference]: Start difference. First operand 1285 states and 5019 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 00:14:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:02,430 INFO L93 Difference]: Finished difference Result 2143 states and 8130 transitions. [2022-02-11 00:14:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:14:02,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 23 [2022-02-11 00:14:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:02,444 INFO L225 Difference]: With dead ends: 2143 [2022-02-11 00:14:02,445 INFO L226 Difference]: Without dead ends: 2075 [2022-02-11 00:14:02,445 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:02,445 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:02,446 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 36 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-02-11 00:14:02,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1564. [2022-02-11 00:14:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1563 states have (on average 3.9366602687140113) internal successors, (6153), 1563 states have internal predecessors, (6153), 0 states have call successors, (0), 0 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 00:14:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 6153 transitions. [2022-02-11 00:14:02,505 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 6153 transitions. Word has length 23 [2022-02-11 00:14:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:02,506 INFO L470 AbstractCegarLoop]: Abstraction has 1564 states and 6153 transitions. [2022-02-11 00:14:02,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 00:14:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 6153 transitions. [2022-02-11 00:14:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-11 00:14:02,513 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:02,513 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] [2022-02-11 00:14:02,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-11 00:14:02,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:02,739 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1128387681, now seen corresponding path program 2 times [2022-02-11 00:14:02,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:02,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509318563] [2022-02-11 00:14:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:02,791 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:02,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509318563] [2022-02-11 00:14:02,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509318563] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:14:02,791 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:14:02,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:14:02,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129617788] [2022-02-11 00:14:02,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:14:02,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 00:14:02,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 00:14:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:14:02,793 INFO L87 Difference]: Start difference. First operand 1564 states and 6153 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 00:14:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:02,868 INFO L93 Difference]: Finished difference Result 2365 states and 9064 transitions. [2022-02-11 00:14:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:14:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-02-11 00:14:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:02,884 INFO L225 Difference]: With dead ends: 2365 [2022-02-11 00:14:02,884 INFO L226 Difference]: Without dead ends: 2297 [2022-02-11 00:14:02,885 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:14:02,885 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:02,886 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 26 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-02-11 00:14:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1785. [2022-02-11 00:14:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 3.9551569506726456) internal successors, (7056), 1784 states have internal predecessors, (7056), 0 states have call successors, (0), 0 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 00:14:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7056 transitions. [2022-02-11 00:14:02,950 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7056 transitions. Word has length 23 [2022-02-11 00:14:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:02,950 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 7056 transitions. [2022-02-11 00:14:02,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 00:14:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7056 transitions. [2022-02-11 00:14:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-11 00:14:02,957 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:02,957 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] [2022-02-11 00:14:02,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-11 00:14:02,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:02,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1784493855, now seen corresponding path program 1 times [2022-02-11 00:14:02,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:02,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563649628] [2022-02-11 00:14:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:02,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:03,004 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 00:14:03,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:03,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563649628] [2022-02-11 00:14:03,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563649628] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:03,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867291417] [2022-02-11 00:14:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:03,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:03,006 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 00:14:03,027 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 00:14:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:03,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:14:03,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:03,272 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 00:14:03,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:03,390 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 00:14:03,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867291417] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:03,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:03,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-02-11 00:14:03,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576319197] [2022-02-11 00:14:03,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:03,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:14:03,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:14:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:03,392 INFO L87 Difference]: Start difference. First operand 1785 states and 7056 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 00:14:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:03,510 INFO L93 Difference]: Finished difference Result 2448 states and 9424 transitions. [2022-02-11 00:14:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:14:03,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 23 [2022-02-11 00:14:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:03,532 INFO L225 Difference]: With dead ends: 2448 [2022-02-11 00:14:03,533 INFO L226 Difference]: Without dead ends: 2397 [2022-02-11 00:14:03,533 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:03,534 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:03,535 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 39 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2022-02-11 00:14:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2051. [2022-02-11 00:14:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 3.951219512195122) internal successors, (8100), 2050 states have internal predecessors, (8100), 0 states have call successors, (0), 0 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 00:14:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 8100 transitions. [2022-02-11 00:14:03,604 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 8100 transitions. Word has length 23 [2022-02-11 00:14:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:03,605 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 8100 transitions. [2022-02-11 00:14:03,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 00:14:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 8100 transitions. [2022-02-11 00:14:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-11 00:14:03,613 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:03,613 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] [2022-02-11 00:14:03,643 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 00:14:03,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:03,828 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:03,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1452355087, now seen corresponding path program 2 times [2022-02-11 00:14:03,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:03,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651969044] [2022-02-11 00:14:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:03,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:03,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:03,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651969044] [2022-02-11 00:14:03,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651969044] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:14:03,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:14:03,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:14:03,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018983003] [2022-02-11 00:14:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:14:03,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 00:14:03,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 00:14:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:14:03,884 INFO L87 Difference]: Start difference. First operand 2051 states and 8100 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 00:14:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:03,959 INFO L93 Difference]: Finished difference Result 2710 states and 10468 transitions. [2022-02-11 00:14:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:14:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-02-11 00:14:03,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:03,972 INFO L225 Difference]: With dead ends: 2710 [2022-02-11 00:14:03,973 INFO L226 Difference]: Without dead ends: 2659 [2022-02-11 00:14:03,973 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:14:03,973 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:03,974 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2022-02-11 00:14:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2311. [2022-02-11 00:14:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 2310 states have (on average 3.9484848484848483) internal successors, (9121), 2310 states have internal predecessors, (9121), 0 states have call successors, (0), 0 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 00:14:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 9121 transitions. [2022-02-11 00:14:04,067 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 9121 transitions. Word has length 23 [2022-02-11 00:14:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:04,068 INFO L470 AbstractCegarLoop]: Abstraction has 2311 states and 9121 transitions. [2022-02-11 00:14:04,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 00:14:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 9121 transitions. [2022-02-11 00:14:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:04,078 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:04,078 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:04,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-11 00:14:04,079 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:04,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash -397256989, now seen corresponding path program 3 times [2022-02-11 00:14:04,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:04,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717360819] [2022-02-11 00:14:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:04,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:04,126 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:04,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717360819] [2022-02-11 00:14:04,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717360819] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:04,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368568956] [2022-02-11 00:14:04,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:14:04,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:04,128 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 00:14:04,153 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 00:14:04,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:14:04,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:04,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:04,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:04,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:04,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368568956] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:04,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:04,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 00:14:04,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136674344] [2022-02-11 00:14:04,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:04,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:04,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:04,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:04,315 INFO L87 Difference]: Start difference. First operand 2311 states and 9121 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:14:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:04,799 INFO L93 Difference]: Finished difference Result 6038 states and 23046 transitions. [2022-02-11 00:14:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:14:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 00:14:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:04,830 INFO L225 Difference]: With dead ends: 6038 [2022-02-11 00:14:04,830 INFO L226 Difference]: Without dead ends: 6038 [2022-02-11 00:14:04,830 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:14:04,831 INFO L934 BasicCegarLoop]: 66 mSDtfsCounter, 186 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:04,831 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 252 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:14:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2022-02-11 00:14:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 2800. [2022-02-11 00:14:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2800 states, 2799 states have (on average 4.00821722043587) internal successors, (11219), 2799 states have internal predecessors, (11219), 0 states have call successors, (0), 0 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 00:14:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 11219 transitions. [2022-02-11 00:14:04,958 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 11219 transitions. Word has length 25 [2022-02-11 00:14:04,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:04,958 INFO L470 AbstractCegarLoop]: Abstraction has 2800 states and 11219 transitions. [2022-02-11 00:14:04,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:14:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 11219 transitions. [2022-02-11 00:14:04,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:04,969 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:04,969 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:04,999 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 00:14:05,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-11 00:14:05,184 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2030384925, now seen corresponding path program 4 times [2022-02-11 00:14:05,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:05,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672394327] [2022-02-11 00:14:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:05,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:05,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672394327] [2022-02-11 00:14:05,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672394327] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:05,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931037558] [2022-02-11 00:14:05,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:14:05,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:05,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:05,219 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 00:14:05,220 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 00:14:05,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:14:05,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:05,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:05,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:05,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:05,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931037558] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:05,386 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:05,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 00:14:05,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633745915] [2022-02-11 00:14:05,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:05,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:05,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:05,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:05,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:05,387 INFO L87 Difference]: Start difference. First operand 2800 states and 11219 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:14:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:05,671 INFO L93 Difference]: Finished difference Result 5607 states and 21463 transitions. [2022-02-11 00:14:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:14:05,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 00:14:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:05,697 INFO L225 Difference]: With dead ends: 5607 [2022-02-11 00:14:05,697 INFO L226 Difference]: Without dead ends: 5495 [2022-02-11 00:14:05,698 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:14:05,699 INFO L934 BasicCegarLoop]: 27 mSDtfsCounter, 250 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:05,699 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 142 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-02-11 00:14:05,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 3696. [2022-02-11 00:14:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 4.088227334235453) internal successors, (15106), 3695 states have internal predecessors, (15106), 0 states have call successors, (0), 0 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 00:14:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 15106 transitions. [2022-02-11 00:14:05,864 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 15106 transitions. Word has length 25 [2022-02-11 00:14:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:05,865 INFO L470 AbstractCegarLoop]: Abstraction has 3696 states and 15106 transitions. [2022-02-11 00:14:05,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:14:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 15106 transitions. [2022-02-11 00:14:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:05,877 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:05,877 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:05,898 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 00:14:06,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:06,092 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash -638630689, now seen corresponding path program 5 times [2022-02-11 00:14:06,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:06,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868359300] [2022-02-11 00:14:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:06,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:06,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:06,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868359300] [2022-02-11 00:14:06,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868359300] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:06,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579105224] [2022-02-11 00:14:06,131 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:14:06,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:06,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:06,132 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 00:14:06,134 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 00:14:06,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:14:06,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:06,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:06,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:06,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:06,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579105224] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:06,293 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:06,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:06,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42409438] [2022-02-11 00:14:06,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:06,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:06,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:06,294 INFO L87 Difference]: Start difference. First operand 3696 states and 15106 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 00:14:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:06,547 INFO L93 Difference]: Finished difference Result 5302 states and 20641 transitions. [2022-02-11 00:14:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:14:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 00:14:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:06,571 INFO L225 Difference]: With dead ends: 5302 [2022-02-11 00:14:06,571 INFO L226 Difference]: Without dead ends: 5302 [2022-02-11 00:14:06,572 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:14:06,572 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 252 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:06,573 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 126 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2022-02-11 00:14:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3659. [2022-02-11 00:14:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 3658 states have (on average 4.064516129032258) internal successors, (14868), 3658 states have internal predecessors, (14868), 0 states have call successors, (0), 0 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 00:14:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 14868 transitions. [2022-02-11 00:14:06,764 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 14868 transitions. Word has length 25 [2022-02-11 00:14:06,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:06,765 INFO L470 AbstractCegarLoop]: Abstraction has 3659 states and 14868 transitions. [2022-02-11 00:14:06,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 00:14:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 14868 transitions. [2022-02-11 00:14:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:06,778 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:06,778 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:06,804 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 00:14:07,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:07,002 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:07,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash -192019813, now seen corresponding path program 6 times [2022-02-11 00:14:07,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:07,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639333415] [2022-02-11 00:14:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:07,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:07,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:07,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639333415] [2022-02-11 00:14:07,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639333415] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:07,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253640220] [2022-02-11 00:14:07,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:14:07,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:07,039 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 00:14:07,040 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 00:14:07,067 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:14:07,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:07,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:07,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:07,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:07,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253640220] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:07,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:07,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:07,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433605375] [2022-02-11 00:14:07,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:07,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:07,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:07,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:07,201 INFO L87 Difference]: Start difference. First operand 3659 states and 14868 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 00:14:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:07,465 INFO L93 Difference]: Finished difference Result 4788 states and 18687 transitions. [2022-02-11 00:14:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:14:07,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 00:14:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:07,490 INFO L225 Difference]: With dead ends: 4788 [2022-02-11 00:14:07,490 INFO L226 Difference]: Without dead ends: 4768 [2022-02-11 00:14:07,492 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:14:07,493 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 158 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:07,493 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 189 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2022-02-11 00:14:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 3665. [2022-02-11 00:14:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3664 states have (on average 4.060316593886463) internal successors, (14877), 3664 states have internal predecessors, (14877), 0 states have call successors, (0), 0 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 00:14:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 14877 transitions. [2022-02-11 00:14:07,660 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 14877 transitions. Word has length 25 [2022-02-11 00:14:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:07,660 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 14877 transitions. [2022-02-11 00:14:07,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 00:14:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 14877 transitions. [2022-02-11 00:14:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:07,671 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:07,671 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:07,688 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 00:14:07,871 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,SelfDestructingSolverStorable14 [2022-02-11 00:14:07,872 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:07,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2044906781, now seen corresponding path program 7 times [2022-02-11 00:14:07,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:07,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154648078] [2022-02-11 00:14:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:07,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:07,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:07,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154648078] [2022-02-11 00:14:07,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154648078] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:07,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522136794] [2022-02-11 00:14:07,910 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:14:07,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:07,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:07,912 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 00:14:07,913 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 00:14:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:07,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:07,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:08,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:08,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522136794] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:08,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:08,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:08,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55228425] [2022-02-11 00:14:08,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:08,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:08,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:08,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:08,078 INFO L87 Difference]: Start difference. First operand 3665 states and 14877 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:08,374 INFO L93 Difference]: Finished difference Result 7954 states and 31437 transitions. [2022-02-11 00:14:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:14:08,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 00:14:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:08,421 INFO L225 Difference]: With dead ends: 7954 [2022-02-11 00:14:08,422 INFO L226 Difference]: Without dead ends: 7954 [2022-02-11 00:14:08,422 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:14:08,423 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 258 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:08,423 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 120 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2022-02-11 00:14:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 4610. [2022-02-11 00:14:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 4.175092210891734) internal successors, (19243), 4609 states have internal predecessors, (19243), 0 states have call successors, (0), 0 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 00:14:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 19243 transitions. [2022-02-11 00:14:08,612 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 19243 transitions. Word has length 25 [2022-02-11 00:14:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:08,613 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 19243 transitions. [2022-02-11 00:14:08,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 19243 transitions. [2022-02-11 00:14:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:08,627 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:08,627 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:08,654 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 00:14:08,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-11 00:14:08,848 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash 742460259, now seen corresponding path program 8 times [2022-02-11 00:14:08,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:08,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94145536] [2022-02-11 00:14:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:08,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:08,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:08,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94145536] [2022-02-11 00:14:08,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94145536] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:08,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626202864] [2022-02-11 00:14:08,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:14:08,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:08,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:08,877 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 00:14:08,885 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 00:14:08,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:14:08,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:08,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:08,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:08,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:09,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626202864] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:09,027 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:09,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:09,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026053946] [2022-02-11 00:14:09,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:09,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:09,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:09,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:09,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:09,028 INFO L87 Difference]: Start difference. First operand 4610 states and 19243 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:09,303 INFO L93 Difference]: Finished difference Result 6087 states and 24217 transitions. [2022-02-11 00:14:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:14:09,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 00:14:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:09,414 INFO L225 Difference]: With dead ends: 6087 [2022-02-11 00:14:09,414 INFO L226 Difference]: Without dead ends: 6059 [2022-02-11 00:14:09,414 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:14:09,415 INFO L934 BasicCegarLoop]: 52 mSDtfsCounter, 150 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:09,415 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 207 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2022-02-11 00:14:09,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 4587. [2022-02-11 00:14:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4586 states have (on average 4.174662014827737) internal successors, (19145), 4586 states have internal predecessors, (19145), 0 states have call successors, (0), 0 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 00:14:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 19145 transitions. [2022-02-11 00:14:09,555 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 19145 transitions. Word has length 25 [2022-02-11 00:14:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:09,555 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 19145 transitions. [2022-02-11 00:14:09,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 19145 transitions. [2022-02-11 00:14:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:09,566 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:09,566 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:09,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-02-11 00:14:09,767 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,SelfDestructingSolverStorable16 [2022-02-11 00:14:09,767 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:09,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash -316492321, now seen corresponding path program 9 times [2022-02-11 00:14:09,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:09,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508719381] [2022-02-11 00:14:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:09,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:09,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508719381] [2022-02-11 00:14:09,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508719381] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:09,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112069292] [2022-02-11 00:14:09,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:14:09,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:09,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:09,802 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 00:14:09,803 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 00:14:09,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:14:09,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:09,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:09,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:09,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:09,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112069292] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:09,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:09,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:09,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734854578] [2022-02-11 00:14:09,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:09,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:09,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:09,962 INFO L87 Difference]: Start difference. First operand 4587 states and 19145 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:14:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:10,273 INFO L93 Difference]: Finished difference Result 6950 states and 27646 transitions. [2022-02-11 00:14:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:14:10,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 00:14:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:10,304 INFO L225 Difference]: With dead ends: 6950 [2022-02-11 00:14:10,304 INFO L226 Difference]: Without dead ends: 6950 [2022-02-11 00:14:10,305 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:14:10,305 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 189 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:10,305 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 192 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2022-02-11 00:14:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 4669. [2022-02-11 00:14:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4669 states, 4668 states have (on average 4.1782347900599826) internal successors, (19504), 4668 states have internal predecessors, (19504), 0 states have call successors, (0), 0 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 00:14:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4669 states to 4669 states and 19504 transitions. [2022-02-11 00:14:10,544 INFO L78 Accepts]: Start accepts. Automaton has 4669 states and 19504 transitions. Word has length 25 [2022-02-11 00:14:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:10,544 INFO L470 AbstractCegarLoop]: Abstraction has 4669 states and 19504 transitions. [2022-02-11 00:14:10,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:14:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4669 states and 19504 transitions. [2022-02-11 00:14:10,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:10,558 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:10,558 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:10,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-11 00:14:10,771 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,SelfDestructingSolverStorable17 [2022-02-11 00:14:10,772 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:10,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:10,772 INFO L85 PathProgramCache]: Analyzing trace with hash 130118555, now seen corresponding path program 10 times [2022-02-11 00:14:10,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:10,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533856382] [2022-02-11 00:14:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:10,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:10,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:10,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533856382] [2022-02-11 00:14:10,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533856382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:10,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363938171] [2022-02-11 00:14:10,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:14:10,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:10,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:10,805 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 00:14:10,806 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 00:14:10,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:14:10,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:10,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:10,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:10,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:10,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363938171] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:10,963 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:10,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:10,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866840921] [2022-02-11 00:14:10,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:10,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:10,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:10,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:10,967 INFO L87 Difference]: Start difference. First operand 4669 states and 19504 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:14:11,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:11,236 INFO L93 Difference]: Finished difference Result 7627 states and 29903 transitions. [2022-02-11 00:14:11,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:14:11,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 00:14:11,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:11,331 INFO L225 Difference]: With dead ends: 7627 [2022-02-11 00:14:11,331 INFO L226 Difference]: Without dead ends: 7607 [2022-02-11 00:14:11,332 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:14:11,333 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 265 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:11,333 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 151 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:11,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2022-02-11 00:14:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 4687. [2022-02-11 00:14:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4687 states, 4686 states have (on average 4.173068715322237) internal successors, (19555), 4686 states have internal predecessors, (19555), 0 states have call successors, (0), 0 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 00:14:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 19555 transitions. [2022-02-11 00:14:11,504 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 19555 transitions. Word has length 25 [2022-02-11 00:14:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:11,504 INFO L470 AbstractCegarLoop]: Abstraction has 4687 states and 19555 transitions. [2022-02-11 00:14:11,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:14:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 19555 transitions. [2022-02-11 00:14:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:11,518 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:11,518 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:11,545 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 00:14:11,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:11,728 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash -585238749, now seen corresponding path program 11 times [2022-02-11 00:14:11,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:11,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313154694] [2022-02-11 00:14:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:11,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:11,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313154694] [2022-02-11 00:14:11,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313154694] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:11,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215287496] [2022-02-11 00:14:11,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:14:11,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:11,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:11,760 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 00:14:11,795 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 00:14:11,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:14:11,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:11,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:11,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:11,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:11,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215287496] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:11,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:11,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 00:14:11,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308346185] [2022-02-11 00:14:11,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:11,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:11,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:11,929 INFO L87 Difference]: Start difference. First operand 4687 states and 19555 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 00:14:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:12,392 INFO L93 Difference]: Finished difference Result 7378 states and 29710 transitions. [2022-02-11 00:14:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:14:12,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 00:14:12,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:12,417 INFO L225 Difference]: With dead ends: 7378 [2022-02-11 00:14:12,417 INFO L226 Difference]: Without dead ends: 7378 [2022-02-11 00:14:12,417 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:14:12,418 INFO L934 BasicCegarLoop]: 58 mSDtfsCounter, 161 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:12,419 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 233 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2022-02-11 00:14:12,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 5057. [2022-02-11 00:14:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 5056 states have (on average 4.166139240506329) internal successors, (21064), 5056 states have internal predecessors, (21064), 0 states have call successors, (0), 0 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 00:14:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 21064 transitions. [2022-02-11 00:14:12,612 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 21064 transitions. Word has length 25 [2022-02-11 00:14:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:12,614 INFO L470 AbstractCegarLoop]: Abstraction has 5057 states and 21064 transitions. [2022-02-11 00:14:12,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 00:14:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 21064 transitions. [2022-02-11 00:14:12,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:12,631 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:12,631 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:12,654 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 00:14:12,847 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,SelfDestructingSolverStorable19 [2022-02-11 00:14:12,848 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1874482561, now seen corresponding path program 12 times [2022-02-11 00:14:12,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:12,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608000807] [2022-02-11 00:14:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:12,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:12,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608000807] [2022-02-11 00:14:12,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608000807] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:12,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432283231] [2022-02-11 00:14:12,885 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:14:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:12,886 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 00:14:12,887 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 00:14:12,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:14:12,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:12,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:12,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:12,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:13,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432283231] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:13,036 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:13,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 00:14:13,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187476634] [2022-02-11 00:14:13,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:13,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:13,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:13,038 INFO L87 Difference]: Start difference. First operand 5057 states and 21064 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 00:14:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:13,349 INFO L93 Difference]: Finished difference Result 7943 states and 31115 transitions. [2022-02-11 00:14:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:14:13,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 00:14:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:13,387 INFO L225 Difference]: With dead ends: 7943 [2022-02-11 00:14:13,387 INFO L226 Difference]: Without dead ends: 7883 [2022-02-11 00:14:13,387 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:14:13,388 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 260 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:13,388 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 138 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2022-02-11 00:14:13,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 5255. [2022-02-11 00:14:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.142558051008756) internal successors, (21765), 5254 states have internal predecessors, (21765), 0 states have call successors, (0), 0 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 00:14:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 21765 transitions. [2022-02-11 00:14:13,583 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 21765 transitions. Word has length 25 [2022-02-11 00:14:13,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:13,583 INFO L470 AbstractCegarLoop]: Abstraction has 5255 states and 21765 transitions. [2022-02-11 00:14:13,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 00:14:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 21765 transitions. [2022-02-11 00:14:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:13,597 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:13,597 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:13,625 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 00:14:13,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:13,812 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1929197791, now seen corresponding path program 3 times [2022-02-11 00:14:13,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:13,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609322592] [2022-02-11 00:14:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:13,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:13,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609322592] [2022-02-11 00:14:13,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609322592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:13,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833251479] [2022-02-11 00:14:13,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:14:13,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:13,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:13,846 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 00:14:13,847 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 00:14:13,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:14:13,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:13,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:13,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:13,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:14,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833251479] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:14,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:14,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 00:14:14,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232288150] [2022-02-11 00:14:14,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:14,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:14,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:14,029 INFO L87 Difference]: Start difference. First operand 5255 states and 21765 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:14,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:14,512 INFO L93 Difference]: Finished difference Result 16146 states and 66180 transitions. [2022-02-11 00:14:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:14:14,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 00:14:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:14,591 INFO L225 Difference]: With dead ends: 16146 [2022-02-11 00:14:14,592 INFO L226 Difference]: Without dead ends: 16146 [2022-02-11 00:14:14,593 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:14:14,594 INFO L934 BasicCegarLoop]: 66 mSDtfsCounter, 156 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:14,594 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 268 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:14:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2022-02-11 00:14:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 7401. [2022-02-11 00:14:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 7400 states have (on average 4.2628378378378375) internal successors, (31545), 7400 states have internal predecessors, (31545), 0 states have call successors, (0), 0 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 00:14:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 31545 transitions. [2022-02-11 00:14:14,870 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 31545 transitions. Word has length 25 [2022-02-11 00:14:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:14,870 INFO L470 AbstractCegarLoop]: Abstraction has 7401 states and 31545 transitions. [2022-02-11 00:14:14,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 31545 transitions. [2022-02-11 00:14:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:14,889 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:14,889 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:14,906 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 00:14:15,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:15,090 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1602824093, now seen corresponding path program 4 times [2022-02-11 00:14:15,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:15,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362204527] [2022-02-11 00:14:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:15,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:15,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:15,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362204527] [2022-02-11 00:14:15,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362204527] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:15,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175352573] [2022-02-11 00:14:15,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:14:15,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:15,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:15,129 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 00:14:15,130 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 00:14:15,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:14:15,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:15,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:15,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:15,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:15,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175352573] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:15,284 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:15,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 00:14:15,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560817050] [2022-02-11 00:14:15,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:15,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:15,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:15,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:15,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:15,287 INFO L87 Difference]: Start difference. First operand 7401 states and 31545 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 00:14:15,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:15,667 INFO L93 Difference]: Finished difference Result 15690 states and 65076 transitions. [2022-02-11 00:14:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:14:15,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 00:14:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:15,722 INFO L225 Difference]: With dead ends: 15690 [2022-02-11 00:14:15,722 INFO L226 Difference]: Without dead ends: 15594 [2022-02-11 00:14:15,723 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:14:15,723 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 209 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:15,723 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 155 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15594 states. [2022-02-11 00:14:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15594 to 10713. [2022-02-11 00:14:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10713 states, 10712 states have (on average 4.391150112023898) internal successors, (47038), 10712 states have internal predecessors, (47038), 0 states have call successors, (0), 0 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 00:14:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10713 states to 10713 states and 47038 transitions. [2022-02-11 00:14:16,057 INFO L78 Accepts]: Start accepts. Automaton has 10713 states and 47038 transitions. Word has length 25 [2022-02-11 00:14:16,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:16,057 INFO L470 AbstractCegarLoop]: Abstraction has 10713 states and 47038 transitions. [2022-02-11 00:14:16,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 00:14:16,057 INFO L276 IsEmpty]: Start isEmpty. Operand 10713 states and 47038 transitions. [2022-02-11 00:14:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:16,081 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:16,081 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:16,098 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 00:14:16,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-11 00:14:16,282 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash -829404249, now seen corresponding path program 5 times [2022-02-11 00:14:16,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:16,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450776667] [2022-02-11 00:14:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:16,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:16,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:16,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450776667] [2022-02-11 00:14:16,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450776667] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:16,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927774291] [2022-02-11 00:14:16,308 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:14:16,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:16,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:16,310 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 00:14:16,311 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 00:14:16,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:14:16,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:16,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:16,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:16,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:16,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927774291] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:16,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:16,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:16,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624003985] [2022-02-11 00:14:16,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:16,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:16,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:16,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:16,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:16,449 INFO L87 Difference]: Start difference. First operand 10713 states and 47038 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:16,876 INFO L93 Difference]: Finished difference Result 15255 states and 64180 transitions. [2022-02-11 00:14:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:14:16,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 00:14:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:16,937 INFO L225 Difference]: With dead ends: 15255 [2022-02-11 00:14:16,937 INFO L226 Difference]: Without dead ends: 15255 [2022-02-11 00:14:16,937 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:14:16,938 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 223 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:16,938 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 117 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15255 states. [2022-02-11 00:14:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15255 to 10587. [2022-02-11 00:14:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10587 states, 10586 states have (on average 4.366616285660306) internal successors, (46225), 10586 states have internal predecessors, (46225), 0 states have call successors, (0), 0 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 00:14:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10587 states to 10587 states and 46225 transitions. [2022-02-11 00:14:17,427 INFO L78 Accepts]: Start accepts. Automaton has 10587 states and 46225 transitions. Word has length 25 [2022-02-11 00:14:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:17,428 INFO L470 AbstractCegarLoop]: Abstraction has 10587 states and 46225 transitions. [2022-02-11 00:14:17,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 10587 states and 46225 transitions. [2022-02-11 00:14:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:17,454 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:17,454 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:17,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-02-11 00:14:17,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:17,655 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:17,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:17,655 INFO L85 PathProgramCache]: Analyzing trace with hash 160062431, now seen corresponding path program 6 times [2022-02-11 00:14:17,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:17,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649722482] [2022-02-11 00:14:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:17,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:17,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:17,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649722482] [2022-02-11 00:14:17,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649722482] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:17,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476314578] [2022-02-11 00:14:17,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:14:17,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:17,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:17,692 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 00:14:17,693 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 00:14:17,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:14:17,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:17,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:17,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:17,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:17,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476314578] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:17,837 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:17,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:17,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386301881] [2022-02-11 00:14:17,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:17,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:17,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:17,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:17,839 INFO L87 Difference]: Start difference. First operand 10587 states and 46225 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 00:14:18,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:18,132 INFO L93 Difference]: Finished difference Result 13469 states and 56467 transitions. [2022-02-11 00:14:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:14:18,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 00:14:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:18,311 INFO L225 Difference]: With dead ends: 13469 [2022-02-11 00:14:18,311 INFO L226 Difference]: Without dead ends: 13444 [2022-02-11 00:14:18,316 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:14:18,317 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 105 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:18,322 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 213 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:18,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13444 states. [2022-02-11 00:14:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13444 to 10653. [2022-02-11 00:14:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10653 states, 10652 states have (on average 4.361997746901991) internal successors, (46464), 10652 states have internal predecessors, (46464), 0 states have call successors, (0), 0 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 00:14:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10653 states to 10653 states and 46464 transitions. [2022-02-11 00:14:18,689 INFO L78 Accepts]: Start accepts. Automaton has 10653 states and 46464 transitions. Word has length 25 [2022-02-11 00:14:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:18,690 INFO L470 AbstractCegarLoop]: Abstraction has 10653 states and 46464 transitions. [2022-02-11 00:14:18,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 00:14:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 10653 states and 46464 transitions. [2022-02-11 00:14:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:18,719 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:18,719 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:18,735 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 00:14:18,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:18,920 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:18,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:18,921 INFO L85 PathProgramCache]: Analyzing trace with hash -309349743, now seen corresponding path program 7 times [2022-02-11 00:14:18,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:18,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790452853] [2022-02-11 00:14:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:18,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:18,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:18,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790452853] [2022-02-11 00:14:18,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790452853] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:18,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550427265] [2022-02-11 00:14:18,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:14:18,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:18,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:18,962 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 00:14:18,963 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 00:14:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:18,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:18,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:19,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:19,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550427265] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:19,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:19,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:19,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062459074] [2022-02-11 00:14:19,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:19,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:19,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:19,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:19,115 INFO L87 Difference]: Start difference. First operand 10653 states and 46464 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:14:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:19,548 INFO L93 Difference]: Finished difference Result 23056 states and 98319 transitions. [2022-02-11 00:14:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:14:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:14:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:19,648 INFO L225 Difference]: With dead ends: 23056 [2022-02-11 00:14:19,649 INFO L226 Difference]: Without dead ends: 23056 [2022-02-11 00:14:19,649 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:14:19,649 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 216 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:19,650 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 140 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23056 states. [2022-02-11 00:14:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23056 to 14095. [2022-02-11 00:14:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14095 states, 14094 states have (on average 4.5) internal successors, (63423), 14094 states have internal predecessors, (63423), 0 states have call successors, (0), 0 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 00:14:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14095 states to 14095 states and 63423 transitions. [2022-02-11 00:14:20,399 INFO L78 Accepts]: Start accepts. Automaton has 14095 states and 63423 transitions. Word has length 25 [2022-02-11 00:14:20,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:20,399 INFO L470 AbstractCegarLoop]: Abstraction has 14095 states and 63423 transitions. [2022-02-11 00:14:20,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:14:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 14095 states and 63423 transitions. [2022-02-11 00:14:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:20,446 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:20,447 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:20,475 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 00:14:20,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:20,672 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:20,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:20,672 INFO L85 PathProgramCache]: Analyzing trace with hash -547313135, now seen corresponding path program 8 times [2022-02-11 00:14:20,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:20,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373251406] [2022-02-11 00:14:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:20,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:20,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:20,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373251406] [2022-02-11 00:14:20,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373251406] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:20,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097420610] [2022-02-11 00:14:20,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:14:20,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:20,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:20,706 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 00:14:20,707 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 00:14:20,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:14:20,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:20,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:20,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:20,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:20,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097420610] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:20,862 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:20,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:20,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067729388] [2022-02-11 00:14:20,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:20,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:20,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:20,863 INFO L87 Difference]: Start difference. First operand 14095 states and 63423 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:21,220 INFO L93 Difference]: Finished difference Result 18427 states and 79299 transitions. [2022-02-11 00:14:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:14:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 00:14:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:21,437 INFO L225 Difference]: With dead ends: 18427 [2022-02-11 00:14:21,438 INFO L226 Difference]: Without dead ends: 18403 [2022-02-11 00:14:21,438 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:14:21,438 INFO L934 BasicCegarLoop]: 52 mSDtfsCounter, 140 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:21,439 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 200 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:21,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18403 states. [2022-02-11 00:14:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18403 to 14093. [2022-02-11 00:14:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14093 states, 14092 states have (on average 4.498864604030656) internal successors, (63398), 14092 states have internal predecessors, (63398), 0 states have call successors, (0), 0 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 00:14:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 63398 transitions. [2022-02-11 00:14:21,877 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 63398 transitions. Word has length 25 [2022-02-11 00:14:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:21,877 INFO L470 AbstractCegarLoop]: Abstraction has 14093 states and 63398 transitions. [2022-02-11 00:14:21,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 63398 transitions. [2022-02-11 00:14:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:22,055 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:22,055 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:22,073 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 00:14:22,255 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,SelfDestructingSolverStorable26 [2022-02-11 00:14:22,256 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2067157521, now seen corresponding path program 9 times [2022-02-11 00:14:22,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:22,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771848301] [2022-02-11 00:14:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:22,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:22,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:22,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771848301] [2022-02-11 00:14:22,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771848301] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:22,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675500098] [2022-02-11 00:14:22,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:14:22,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:22,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:22,288 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 00:14:22,289 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 00:14:22,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:14:22,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:22,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:22,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:22,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:22,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675500098] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:22,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:22,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:22,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172143800] [2022-02-11 00:14:22,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:22,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:22,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:22,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:22,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:22,442 INFO L87 Difference]: Start difference. First operand 14093 states and 63398 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:22,993 INFO L93 Difference]: Finished difference Result 21428 states and 91981 transitions. [2022-02-11 00:14:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:14:22,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 00:14:22,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:23,087 INFO L225 Difference]: With dead ends: 21428 [2022-02-11 00:14:23,087 INFO L226 Difference]: Without dead ends: 21428 [2022-02-11 00:14:23,087 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:14:23,088 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 193 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:23,088 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 187 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21428 states. [2022-02-11 00:14:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21428 to 14369. [2022-02-11 00:14:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14369 states, 14368 states have (on average 4.502227171492205) internal successors, (64688), 14368 states have internal predecessors, (64688), 0 states have call successors, (0), 0 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 00:14:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14369 states to 14369 states and 64688 transitions. [2022-02-11 00:14:23,572 INFO L78 Accepts]: Start accepts. Automaton has 14369 states and 64688 transitions. Word has length 25 [2022-02-11 00:14:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:23,572 INFO L470 AbstractCegarLoop]: Abstraction has 14369 states and 64688 transitions. [2022-02-11 00:14:23,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14369 states and 64688 transitions. [2022-02-11 00:14:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:23,606 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:23,606 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:23,623 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 00:14:23,807 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,SelfDestructingSolverStorable27 [2022-02-11 00:14:23,807 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1238343095, now seen corresponding path program 10 times [2022-02-11 00:14:23,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:23,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285231317] [2022-02-11 00:14:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:23,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:23,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285231317] [2022-02-11 00:14:23,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285231317] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:23,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691554905] [2022-02-11 00:14:23,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:14:23,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:23,840 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 00:14:23,841 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 00:14:23,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:14:23,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:23,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:23,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:23,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:23,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691554905] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:23,976 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:23,976 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-02-11 00:14:23,976 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471667104] [2022-02-11 00:14:23,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:23,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:23,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:23,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:23,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:23,977 INFO L87 Difference]: Start difference. First operand 14369 states and 64688 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:14:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:24,440 INFO L93 Difference]: Finished difference Result 21976 states and 93132 transitions. [2022-02-11 00:14:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:14:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 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 00:14:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:24,525 INFO L225 Difference]: With dead ends: 21976 [2022-02-11 00:14:24,525 INFO L226 Difference]: Without dead ends: 21951 [2022-02-11 00:14:24,525 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:14:24,526 INFO L934 BasicCegarLoop]: 38 mSDtfsCounter, 207 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:24,526 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 155 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21951 states. [2022-02-11 00:14:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21951 to 14371. [2022-02-11 00:14:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14371 states, 14370 states have (on average 4.501530967292972) internal successors, (64687), 14370 states have internal predecessors, (64687), 0 states have call successors, (0), 0 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 00:14:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 64687 transitions. [2022-02-11 00:14:25,193 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 64687 transitions. Word has length 25 [2022-02-11 00:14:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:25,193 INFO L470 AbstractCegarLoop]: Abstraction has 14371 states and 64687 transitions. [2022-02-11 00:14:25,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:14:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 64687 transitions. [2022-02-11 00:14:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:25,228 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:25,228 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:25,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-11 00:14:25,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-11 00:14:25,429 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:25,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:25,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1192902861, now seen corresponding path program 11 times [2022-02-11 00:14:25,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:25,429 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674944317] [2022-02-11 00:14:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:25,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:25,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:25,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674944317] [2022-02-11 00:14:25,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674944317] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:25,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942201622] [2022-02-11 00:14:25,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:14:25,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:25,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:25,459 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 00:14:25,460 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 00:14:25,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:14:25,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:25,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:25,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:25,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:25,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942201622] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:25,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:25,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 00:14:25,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029602526] [2022-02-11 00:14:25,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:25,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:25,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:25,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:25,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:25,588 INFO L87 Difference]: Start difference. First operand 14371 states and 64687 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:26,284 INFO L93 Difference]: Finished difference Result 23394 states and 101370 transitions. [2022-02-11 00:14:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:14:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 00:14:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:26,445 INFO L225 Difference]: With dead ends: 23394 [2022-02-11 00:14:26,445 INFO L226 Difference]: Without dead ends: 23394 [2022-02-11 00:14:26,446 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:14:26,447 INFO L934 BasicCegarLoop]: 59 mSDtfsCounter, 165 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:26,449 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 214 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:14:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23394 states. [2022-02-11 00:14:26,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23394 to 15994. [2022-02-11 00:14:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15994 states, 15993 states have (on average 4.474832739323454) internal successors, (71566), 15993 states have internal predecessors, (71566), 0 states have call successors, (0), 0 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 00:14:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15994 states to 15994 states and 71566 transitions. [2022-02-11 00:14:26,979 INFO L78 Accepts]: Start accepts. Automaton has 15994 states and 71566 transitions. Word has length 25 [2022-02-11 00:14:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:26,979 INFO L470 AbstractCegarLoop]: Abstraction has 15994 states and 71566 transitions. [2022-02-11 00:14:26,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 15994 states and 71566 transitions. [2022-02-11 00:14:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:14:27,019 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:27,019 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:27,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-02-11 00:14:27,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:27,220 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:27,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2059167099, now seen corresponding path program 12 times [2022-02-11 00:14:27,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:27,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392850026] [2022-02-11 00:14:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:27,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:27,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:27,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392850026] [2022-02-11 00:14:27,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392850026] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:27,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657100572] [2022-02-11 00:14:27,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:14:27,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:27,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:27,247 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 00:14:27,248 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 00:14:27,270 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:14:27,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:27,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:14:27,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:27,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:27,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657100572] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:27,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:27,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 00:14:27,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457562982] [2022-02-11 00:14:27,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:27,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:27,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:27,395 INFO L87 Difference]: Start difference. First operand 15994 states and 71566 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:27,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:27,955 INFO L93 Difference]: Finished difference Result 23161 states and 98055 transitions. [2022-02-11 00:14:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:14:27,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 00:14:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:28,083 INFO L225 Difference]: With dead ends: 23161 [2022-02-11 00:14:28,084 INFO L226 Difference]: Without dead ends: 23070 [2022-02-11 00:14:28,084 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:14:28,086 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 216 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:28,086 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 144 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23070 states. [2022-02-11 00:14:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23070 to 16749. [2022-02-11 00:14:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16749 states, 16748 states have (on average 4.4525316455696204) internal successors, (74571), 16748 states have internal predecessors, (74571), 0 states have call successors, (0), 0 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 00:14:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16749 states to 16749 states and 74571 transitions. [2022-02-11 00:14:28,707 INFO L78 Accepts]: Start accepts. Automaton has 16749 states and 74571 transitions. Word has length 25 [2022-02-11 00:14:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:28,707 INFO L470 AbstractCegarLoop]: Abstraction has 16749 states and 74571 transitions. [2022-02-11 00:14:28,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 16749 states and 74571 transitions. [2022-02-11 00:14:28,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:28,909 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:28,909 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:28,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-11 00:14:29,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:29,111 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash -818219675, now seen corresponding path program 13 times [2022-02-11 00:14:29,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:29,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218690146] [2022-02-11 00:14:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:29,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:29,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218690146] [2022-02-11 00:14:29,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218690146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:29,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242764626] [2022-02-11 00:14:29,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:14:29,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:29,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:29,169 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 00:14:29,169 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 00:14:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:29,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:29,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:29,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:29,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242764626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:29,590 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:29,590 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-02-11 00:14:29,590 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785346165] [2022-02-11 00:14:29,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:29,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:14:29,590 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:14:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:29,591 INFO L87 Difference]: Start difference. First operand 16749 states and 74571 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:29,909 INFO L93 Difference]: Finished difference Result 18350 states and 80380 transitions. [2022-02-11 00:14:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:14:29,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:29,981 INFO L225 Difference]: With dead ends: 18350 [2022-02-11 00:14:29,981 INFO L226 Difference]: Without dead ends: 18282 [2022-02-11 00:14:29,982 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:29,983 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:29,983 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 91 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18282 states. [2022-02-11 00:14:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18282 to 17368. [2022-02-11 00:14:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17368 states, 17367 states have (on average 4.438244947313871) internal successors, (77079), 17367 states have internal predecessors, (77079), 0 states have call successors, (0), 0 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 00:14:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17368 states to 17368 states and 77079 transitions. [2022-02-11 00:14:30,641 INFO L78 Accepts]: Start accepts. Automaton has 17368 states and 77079 transitions. Word has length 27 [2022-02-11 00:14:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:30,641 INFO L470 AbstractCegarLoop]: Abstraction has 17368 states and 77079 transitions. [2022-02-11 00:14:30,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 17368 states and 77079 transitions. [2022-02-11 00:14:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:30,694 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:30,694 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:30,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-11 00:14:30,895 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,SelfDestructingSolverStorable31 [2022-02-11 00:14:30,895 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:30,896 INFO L85 PathProgramCache]: Analyzing trace with hash -850989663, now seen corresponding path program 14 times [2022-02-11 00:14:30,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:30,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419563768] [2022-02-11 00:14:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:30,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:30,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:30,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419563768] [2022-02-11 00:14:30,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419563768] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:30,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832124413] [2022-02-11 00:14:30,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:14:30,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:30,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:30,956 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 00:14:30,957 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 00:14:30,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:14:30,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:30,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:30,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:31,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:31,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832124413] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:31,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:31,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-02-11 00:14:31,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352576025] [2022-02-11 00:14:31,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:31,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:31,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:31,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:31,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:31,517 INFO L87 Difference]: Start difference. First operand 17368 states and 77079 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 00:14:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:32,088 INFO L93 Difference]: Finished difference Result 19060 states and 83209 transitions. [2022-02-11 00:14:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:14:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:32,180 INFO L225 Difference]: With dead ends: 19060 [2022-02-11 00:14:32,180 INFO L226 Difference]: Without dead ends: 18924 [2022-02-11 00:14:32,180 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:32,181 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:32,181 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 106 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:14:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2022-02-11 00:14:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 17614. [2022-02-11 00:14:32,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17613 states have (on average 4.438199057514336) internal successors, (78170), 17613 states have internal predecessors, (78170), 0 states have call successors, (0), 0 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 00:14:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 78170 transitions. [2022-02-11 00:14:32,756 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 78170 transitions. Word has length 27 [2022-02-11 00:14:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:32,756 INFO L470 AbstractCegarLoop]: Abstraction has 17614 states and 78170 transitions. [2022-02-11 00:14:32,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 00:14:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 78170 transitions. [2022-02-11 00:14:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:32,803 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:32,803 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, 1, 1] [2022-02-11 00:14:32,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-11 00:14:33,004 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,SelfDestructingSolverStorable32 [2022-02-11 00:14:33,004 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:33,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1826966111, now seen corresponding path program 1 times [2022-02-11 00:14:33,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:33,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579944830] [2022-02-11 00:14:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:33,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:33,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:33,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579944830] [2022-02-11 00:14:33,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579944830] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:33,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809324535] [2022-02-11 00:14:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:33,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:33,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:33,079 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 00:14:33,081 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 00:14:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:33,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:33,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:33,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:33,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809324535] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:33,548 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:33,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-02-11 00:14:33,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118848715] [2022-02-11 00:14:33,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:33,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:33,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:33,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:33,550 INFO L87 Difference]: Start difference. First operand 17614 states and 78170 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:34,165 INFO L93 Difference]: Finished difference Result 18637 states and 81676 transitions. [2022-02-11 00:14:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:14:34,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:34,240 INFO L225 Difference]: With dead ends: 18637 [2022-02-11 00:14:34,240 INFO L226 Difference]: Without dead ends: 18269 [2022-02-11 00:14:34,240 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:34,241 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:34,241 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 105 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:14:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18269 states. [2022-02-11 00:14:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18269 to 17885. [2022-02-11 00:14:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17885 states, 17884 states have (on average 4.4198165958398565) internal successors, (79044), 17884 states have internal predecessors, (79044), 0 states have call successors, (0), 0 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 00:14:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17885 states to 17885 states and 79044 transitions. [2022-02-11 00:14:34,810 INFO L78 Accepts]: Start accepts. Automaton has 17885 states and 79044 transitions. Word has length 27 [2022-02-11 00:14:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:34,811 INFO L470 AbstractCegarLoop]: Abstraction has 17885 states and 79044 transitions. [2022-02-11 00:14:34,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 17885 states and 79044 transitions. [2022-02-11 00:14:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:34,860 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:34,860 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, 1, 1] [2022-02-11 00:14:34,877 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 00:14:35,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:35,061 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:35,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:35,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1766241133, now seen corresponding path program 2 times [2022-02-11 00:14:35,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:35,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218368422] [2022-02-11 00:14:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:35,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:35,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:35,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218368422] [2022-02-11 00:14:35,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218368422] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:35,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674652559] [2022-02-11 00:14:35,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:14:35,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:35,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:35,139 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 00:14:35,140 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 00:14:35,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:14:35,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:35,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:35,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:35,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:35,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674652559] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:35,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:35,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-02-11 00:14:35,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737003377] [2022-02-11 00:14:35,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:35,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:35,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:35,588 INFO L87 Difference]: Start difference. First operand 17885 states and 79044 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 00:14:36,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:36,132 INFO L93 Difference]: Finished difference Result 18717 states and 81967 transitions. [2022-02-11 00:14:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:14:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:36,200 INFO L225 Difference]: With dead ends: 18717 [2022-02-11 00:14:36,200 INFO L226 Difference]: Without dead ends: 18403 [2022-02-11 00:14:36,200 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:36,201 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 67 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:36,201 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 81 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18403 states. [2022-02-11 00:14:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18403 to 17947. [2022-02-11 00:14:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17947 states, 17946 states have (on average 4.425554441101081) internal successors, (79421), 17946 states have internal predecessors, (79421), 0 states have call successors, (0), 0 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 00:14:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17947 states to 17947 states and 79421 transitions. [2022-02-11 00:14:36,807 INFO L78 Accepts]: Start accepts. Automaton has 17947 states and 79421 transitions. Word has length 27 [2022-02-11 00:14:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:36,807 INFO L470 AbstractCegarLoop]: Abstraction has 17947 states and 79421 transitions. [2022-02-11 00:14:36,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 00:14:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 17947 states and 79421 transitions. [2022-02-11 00:14:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:36,852 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:36,852 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, 1, 1] [2022-02-11 00:14:36,869 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 00:14:37,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:37,052 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash -29963743, now seen corresponding path program 3 times [2022-02-11 00:14:37,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:37,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095002686] [2022-02-11 00:14:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:37,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:37,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:37,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095002686] [2022-02-11 00:14:37,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095002686] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:37,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615385280] [2022-02-11 00:14:37,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:14:37,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:37,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:37,134 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 00:14:37,135 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 00:14:37,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:14:37,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:37,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:37,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:37,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:37,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615385280] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:37,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:37,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-02-11 00:14:37,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574844811] [2022-02-11 00:14:37,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:37,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:14:37,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:14:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:37,545 INFO L87 Difference]: Start difference. First operand 17947 states and 79421 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) 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 00:14:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:38,019 INFO L93 Difference]: Finished difference Result 18527 states and 81623 transitions. [2022-02-11 00:14:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:14:38,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) 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 27 [2022-02-11 00:14:38,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:38,090 INFO L225 Difference]: With dead ends: 18527 [2022-02-11 00:14:38,090 INFO L226 Difference]: Without dead ends: 18379 [2022-02-11 00:14:38,090 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:38,091 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:38,091 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 82 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18379 states. [2022-02-11 00:14:38,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18379 to 18247. [2022-02-11 00:14:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18247 states, 18246 states have (on average 4.422942014688151) internal successors, (80701), 18246 states have internal predecessors, (80701), 0 states have call successors, (0), 0 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 00:14:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18247 states to 18247 states and 80701 transitions. [2022-02-11 00:14:38,676 INFO L78 Accepts]: Start accepts. Automaton has 18247 states and 80701 transitions. Word has length 27 [2022-02-11 00:14:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:38,677 INFO L470 AbstractCegarLoop]: Abstraction has 18247 states and 80701 transitions. [2022-02-11 00:14:38,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) 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 00:14:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 18247 states and 80701 transitions. [2022-02-11 00:14:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:38,729 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:38,729 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, 1, 1] [2022-02-11 00:14:38,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-11 00:14:38,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:38,930 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:38,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash 175276469, now seen corresponding path program 4 times [2022-02-11 00:14:38,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:38,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147431672] [2022-02-11 00:14:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:39,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:39,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147431672] [2022-02-11 00:14:39,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147431672] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:39,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768152148] [2022-02-11 00:14:39,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:14:39,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:39,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:39,004 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 00:14:39,006 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 00:14:39,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:14:39,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:39,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:39,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:39,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:39,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768152148] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:39,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:39,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-02-11 00:14:39,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120310321] [2022-02-11 00:14:39,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:39,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:39,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:39,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:39,468 INFO L87 Difference]: Start difference. First operand 18247 states and 80701 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 00:14:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:39,852 INFO L93 Difference]: Finished difference Result 19257 states and 84104 transitions. [2022-02-11 00:14:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:14:39,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 27 [2022-02-11 00:14:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:40,124 INFO L225 Difference]: With dead ends: 19257 [2022-02-11 00:14:40,125 INFO L226 Difference]: Without dead ends: 18829 [2022-02-11 00:14:40,125 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:40,125 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:40,125 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 105 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18829 states. [2022-02-11 00:14:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18829 to 17865. [2022-02-11 00:14:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17865 states, 17864 states have (on average 4.420286609941782) internal successors, (78964), 17864 states have internal predecessors, (78964), 0 states have call successors, (0), 0 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 00:14:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17865 states to 17865 states and 78964 transitions. [2022-02-11 00:14:40,736 INFO L78 Accepts]: Start accepts. Automaton has 17865 states and 78964 transitions. Word has length 27 [2022-02-11 00:14:40,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:40,736 INFO L470 AbstractCegarLoop]: Abstraction has 17865 states and 78964 transitions. [2022-02-11 00:14:40,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 00:14:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 17865 states and 78964 transitions. [2022-02-11 00:14:40,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:40,783 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:40,783 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, 1, 1] [2022-02-11 00:14:40,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-11 00:14:40,984 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,SelfDestructingSolverStorable36 [2022-02-11 00:14:40,984 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:40,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1757100517, now seen corresponding path program 5 times [2022-02-11 00:14:40,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:40,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490275568] [2022-02-11 00:14:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:40,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:41,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:41,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490275568] [2022-02-11 00:14:41,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490275568] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:41,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456822559] [2022-02-11 00:14:41,047 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:14:41,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:41,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:41,048 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 00:14:41,051 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 00:14:41,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:14:41,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:41,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:41,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:41,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:41,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456822559] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:41,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:41,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-02-11 00:14:41,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167518349] [2022-02-11 00:14:41,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:41,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:14:41,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:14:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:41,470 INFO L87 Difference]: Start difference. First operand 17865 states and 78964 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:41,776 INFO L93 Difference]: Finished difference Result 18645 states and 81768 transitions. [2022-02-11 00:14:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:14:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:41,846 INFO L225 Difference]: With dead ends: 18645 [2022-02-11 00:14:41,846 INFO L226 Difference]: Without dead ends: 18497 [2022-02-11 00:14:41,847 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:41,847 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:41,847 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 65 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18497 states. [2022-02-11 00:14:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18497 to 18081. [2022-02-11 00:14:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18081 states, 18080 states have (on average 4.419358407079646) internal successors, (79902), 18080 states have internal predecessors, (79902), 0 states have call successors, (0), 0 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 00:14:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18081 states to 18081 states and 79902 transitions. [2022-02-11 00:14:42,419 INFO L78 Accepts]: Start accepts. Automaton has 18081 states and 79902 transitions. Word has length 27 [2022-02-11 00:14:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:42,419 INFO L470 AbstractCegarLoop]: Abstraction has 18081 states and 79902 transitions. [2022-02-11 00:14:42,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 18081 states and 79902 transitions. [2022-02-11 00:14:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:42,623 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:42,623 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, 1, 1] [2022-02-11 00:14:42,640 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 00:14:42,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-11 00:14:42,824 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:42,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:42,825 INFO L85 PathProgramCache]: Analyzing trace with hash -332468451, now seen corresponding path program 6 times [2022-02-11 00:14:42,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:42,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424057387] [2022-02-11 00:14:42,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:42,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:42,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:42,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424057387] [2022-02-11 00:14:42,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424057387] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:42,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707657582] [2022-02-11 00:14:42,912 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:14:42,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:42,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:42,914 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 00:14:42,946 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 00:14:42,955 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:14:42,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:42,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:42,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:43,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:43,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707657582] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:43,406 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:43,406 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-02-11 00:14:43,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239253703] [2022-02-11 00:14:43,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:43,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:43,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:43,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:43,407 INFO L87 Difference]: Start difference. First operand 18081 states and 79902 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:14:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:43,778 INFO L93 Difference]: Finished difference Result 19216 states and 83740 transitions. [2022-02-11 00:14:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:14:43,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:43,855 INFO L225 Difference]: With dead ends: 19216 [2022-02-11 00:14:43,855 INFO L226 Difference]: Without dead ends: 18872 [2022-02-11 00:14:43,855 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:43,856 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:43,856 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 107 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18872 states. [2022-02-11 00:14:44,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18872 to 18104. [2022-02-11 00:14:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18104 states, 18103 states have (on average 4.404131911837817) internal successors, (79728), 18103 states have internal predecessors, (79728), 0 states have call successors, (0), 0 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 00:14:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18104 states to 18104 states and 79728 transitions. [2022-02-11 00:14:44,416 INFO L78 Accepts]: Start accepts. Automaton has 18104 states and 79728 transitions. Word has length 27 [2022-02-11 00:14:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:44,416 INFO L470 AbstractCegarLoop]: Abstraction has 18104 states and 79728 transitions. [2022-02-11 00:14:44,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:14:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 18104 states and 79728 transitions. [2022-02-11 00:14:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:44,460 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:44,461 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, 1, 1] [2022-02-11 00:14:44,477 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 00:14:44,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-11 00:14:44,661 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:44,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1609977505, now seen corresponding path program 7 times [2022-02-11 00:14:44,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:44,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085817322] [2022-02-11 00:14:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:44,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-11 00:14:44,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:44,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085817322] [2022-02-11 00:14:44,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085817322] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:14:44,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:14:44,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:14:44,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424722534] [2022-02-11 00:14:44,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:14:44,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:14:44,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:44,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:14:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:44,726 INFO L87 Difference]: Start difference. First operand 18104 states and 79728 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 00:14:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:45,077 INFO L93 Difference]: Finished difference Result 18918 states and 82588 transitions. [2022-02-11 00:14:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:14:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:45,147 INFO L225 Difference]: With dead ends: 18918 [2022-02-11 00:14:45,147 INFO L226 Difference]: Without dead ends: 18720 [2022-02-11 00:14:45,147 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:14:45,148 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:45,148 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 39 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18720 states. [2022-02-11 00:14:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18720 to 18128. [2022-02-11 00:14:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18128 states, 18127 states have (on average 4.411871793457274) internal successors, (79974), 18127 states have internal predecessors, (79974), 0 states have call successors, (0), 0 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 00:14:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18128 states to 18128 states and 79974 transitions. [2022-02-11 00:14:45,764 INFO L78 Accepts]: Start accepts. Automaton has 18128 states and 79974 transitions. Word has length 27 [2022-02-11 00:14:45,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:45,764 INFO L470 AbstractCegarLoop]: Abstraction has 18128 states and 79974 transitions. [2022-02-11 00:14:45,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 00:14:45,765 INFO L276 IsEmpty]: Start isEmpty. Operand 18128 states and 79974 transitions. [2022-02-11 00:14:45,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:45,812 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:45,812 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:45,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-11 00:14:45,813 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:45,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1434619345, now seen corresponding path program 8 times [2022-02-11 00:14:45,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:45,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740364007] [2022-02-11 00:14:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:45,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:45,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:45,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740364007] [2022-02-11 00:14:45,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740364007] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:45,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62375874] [2022-02-11 00:14:45,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:14:45,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:45,874 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 00:14:45,877 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 00:14:45,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:14:45,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:45,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:45,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:46,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:14:46,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62375874] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:46,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:46,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-02-11 00:14:46,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461480827] [2022-02-11 00:14:46,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:46,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:14:46,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:14:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:46,282 INFO L87 Difference]: Start difference. First operand 18128 states and 79974 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) 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 00:14:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:46,572 INFO L93 Difference]: Finished difference Result 18732 states and 82218 transitions. [2022-02-11 00:14:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:14:46,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) 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 27 [2022-02-11 00:14:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:46,835 INFO L225 Difference]: With dead ends: 18732 [2022-02-11 00:14:46,835 INFO L226 Difference]: Without dead ends: 18600 [2022-02-11 00:14:46,836 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:46,836 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:46,836 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 73 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18600 states. [2022-02-11 00:14:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18600 to 18396. [2022-02-11 00:14:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18396 states, 18395 states have (on average 4.410220168524056) internal successors, (81126), 18395 states have internal predecessors, (81126), 0 states have call successors, (0), 0 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 00:14:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18396 states to 18396 states and 81126 transitions. [2022-02-11 00:14:47,354 INFO L78 Accepts]: Start accepts. Automaton has 18396 states and 81126 transitions. Word has length 27 [2022-02-11 00:14:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:47,354 INFO L470 AbstractCegarLoop]: Abstraction has 18396 states and 81126 transitions. [2022-02-11 00:14:47,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) 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 00:14:47,354 INFO L276 IsEmpty]: Start isEmpty. Operand 18396 states and 81126 transitions. [2022-02-11 00:14:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:47,593 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:47,593 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, 1, 1] [2022-02-11 00:14:47,609 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 00:14:47,793 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,SelfDestructingSolverStorable40 [2022-02-11 00:14:47,794 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:47,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:47,794 INFO L85 PathProgramCache]: Analyzing trace with hash 769255917, now seen corresponding path program 9 times [2022-02-11 00:14:47,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:47,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734387697] [2022-02-11 00:14:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:47,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:47,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:47,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734387697] [2022-02-11 00:14:47,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734387697] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:47,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318689443] [2022-02-11 00:14:47,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:14:47,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:47,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:47,870 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 00:14:47,871 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 00:14:47,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:14:47,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:47,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:47,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:48,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:48,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318689443] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:48,290 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:48,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-02-11 00:14:48,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624214964] [2022-02-11 00:14:48,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:48,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:48,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:48,291 INFO L87 Difference]: Start difference. First operand 18396 states and 81126 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 00:14:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:48,681 INFO L93 Difference]: Finished difference Result 19604 states and 85164 transitions. [2022-02-11 00:14:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:14:48,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 27 [2022-02-11 00:14:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:48,757 INFO L225 Difference]: With dead ends: 19604 [2022-02-11 00:14:48,757 INFO L226 Difference]: Without dead ends: 19208 [2022-02-11 00:14:48,757 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:48,758 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:48,758 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 119 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19208 states. [2022-02-11 00:14:49,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19208 to 18044. [2022-02-11 00:14:49,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18044 states, 18043 states have (on average 4.406916809843152) internal successors, (79514), 18043 states have internal predecessors, (79514), 0 states have call successors, (0), 0 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 00:14:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18044 states to 18044 states and 79514 transitions. [2022-02-11 00:14:49,334 INFO L78 Accepts]: Start accepts. Automaton has 18044 states and 79514 transitions. Word has length 27 [2022-02-11 00:14:49,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:49,334 INFO L470 AbstractCegarLoop]: Abstraction has 18044 states and 79514 transitions. [2022-02-11 00:14:49,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 00:14:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 18044 states and 79514 transitions. [2022-02-11 00:14:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:49,381 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:49,381 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:49,398 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 00:14:49,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:49,582 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:49,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1784277025, now seen corresponding path program 15 times [2022-02-11 00:14:49,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:49,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224201993] [2022-02-11 00:14:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:49,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:49,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:49,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224201993] [2022-02-11 00:14:49,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224201993] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:49,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317774738] [2022-02-11 00:14:49,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:14:49,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:49,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:49,638 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 00:14:49,639 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 00:14:49,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:14:49,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:49,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:49,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:50,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:50,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317774738] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:50,147 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:50,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-02-11 00:14:50,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484441542] [2022-02-11 00:14:50,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:50,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:14:50,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:14:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:50,148 INFO L87 Difference]: Start difference. First operand 18044 states and 79514 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:50,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:50,444 INFO L93 Difference]: Finished difference Result 19592 states and 85134 transitions. [2022-02-11 00:14:50,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:14:50,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:50,520 INFO L225 Difference]: With dead ends: 19592 [2022-02-11 00:14:50,521 INFO L226 Difference]: Without dead ends: 19524 [2022-02-11 00:14:50,521 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:50,521 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 67 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:50,521 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 79 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:14:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2022-02-11 00:14:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 18554. [2022-02-11 00:14:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18554 states, 18553 states have (on average 4.396647442462135) internal successors, (81571), 18553 states have internal predecessors, (81571), 0 states have call successors, (0), 0 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 00:14:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18554 states to 18554 states and 81571 transitions. [2022-02-11 00:14:51,145 INFO L78 Accepts]: Start accepts. Automaton has 18554 states and 81571 transitions. Word has length 27 [2022-02-11 00:14:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:51,145 INFO L470 AbstractCegarLoop]: Abstraction has 18554 states and 81571 transitions. [2022-02-11 00:14:51,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:14:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 18554 states and 81571 transitions. [2022-02-11 00:14:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:51,195 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:51,195 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:51,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-11 00:14:51,396 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,SelfDestructingSolverStorable42 [2022-02-11 00:14:51,396 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1862975263, now seen corresponding path program 13 times [2022-02-11 00:14:51,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:51,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988088838] [2022-02-11 00:14:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:51,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:51,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988088838] [2022-02-11 00:14:51,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988088838] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:51,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278136660] [2022-02-11 00:14:51,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:14:51,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:51,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:51,465 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 00:14:51,466 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 00:14:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:51,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:51,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:51,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:51,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278136660] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:51,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:51,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-02-11 00:14:51,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816871839] [2022-02-11 00:14:51,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:51,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:14:51,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:51,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:14:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:51,830 INFO L87 Difference]: Start difference. First operand 18554 states and 81571 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 00:14:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:52,278 INFO L93 Difference]: Finished difference Result 20100 states and 87095 transitions. [2022-02-11 00:14:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:14:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:52,356 INFO L225 Difference]: With dead ends: 20100 [2022-02-11 00:14:52,356 INFO L226 Difference]: Without dead ends: 20049 [2022-02-11 00:14:52,356 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:52,357 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:52,357 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 94 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:14:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20049 states. [2022-02-11 00:14:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20049 to 19378. [2022-02-11 00:14:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19378 states, 19377 states have (on average 4.372555091087372) internal successors, (84727), 19377 states have internal predecessors, (84727), 0 states have call successors, (0), 0 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 00:14:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19378 states to 19378 states and 84727 transitions. [2022-02-11 00:14:53,018 INFO L78 Accepts]: Start accepts. Automaton has 19378 states and 84727 transitions. Word has length 27 [2022-02-11 00:14:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:53,018 INFO L470 AbstractCegarLoop]: Abstraction has 19378 states and 84727 transitions. [2022-02-11 00:14:53,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 00:14:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 19378 states and 84727 transitions. [2022-02-11 00:14:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:53,068 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:53,068 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:53,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-11 00:14:53,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:53,269 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash 932751691, now seen corresponding path program 14 times [2022-02-11 00:14:53,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:53,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245913288] [2022-02-11 00:14:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:53,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:53,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:53,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245913288] [2022-02-11 00:14:53,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245913288] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:53,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853524935] [2022-02-11 00:14:53,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:14:53,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:53,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:53,323 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 00:14:53,323 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 00:14:53,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:14:53,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:53,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:53,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:53,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:53,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853524935] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:53,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:53,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-02-11 00:14:53,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730133138] [2022-02-11 00:14:53,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:53,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:14:53,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:53,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:14:53,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:53,728 INFO L87 Difference]: Start difference. First operand 19378 states and 84727 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 00:14:54,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:54,273 INFO L93 Difference]: Finished difference Result 20827 states and 89877 transitions. [2022-02-11 00:14:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:14:54,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 27 [2022-02-11 00:14:54,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:54,352 INFO L225 Difference]: With dead ends: 20827 [2022-02-11 00:14:54,353 INFO L226 Difference]: Without dead ends: 20725 [2022-02-11 00:14:54,353 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:14:54,353 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:54,353 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 100 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20725 states. [2022-02-11 00:14:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20725 to 19777. [2022-02-11 00:14:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19777 states, 19776 states have (on average 4.364229368932039) internal successors, (86307), 19776 states have internal predecessors, (86307), 0 states have call successors, (0), 0 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 00:14:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19777 states to 19777 states and 86307 transitions. [2022-02-11 00:14:55,069 INFO L78 Accepts]: Start accepts. Automaton has 19777 states and 86307 transitions. Word has length 27 [2022-02-11 00:14:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:55,070 INFO L470 AbstractCegarLoop]: Abstraction has 19777 states and 86307 transitions. [2022-02-11 00:14:55,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 00:14:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 19777 states and 86307 transitions. [2022-02-11 00:14:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:14:55,127 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:55,128 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:55,144 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 00:14:55,328 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,SelfDestructingSolverStorable44 [2022-02-11 00:14:55,328 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash -534835761, now seen corresponding path program 15 times [2022-02-11 00:14:55,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:55,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702545905] [2022-02-11 00:14:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:55,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:55,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:55,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702545905] [2022-02-11 00:14:55,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702545905] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:55,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990149044] [2022-02-11 00:14:55,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:14:55,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:55,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:55,393 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 00:14:55,394 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 00:14:55,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:14:55,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:55,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:14:55,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:55,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:14:55,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990149044] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:55,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:55,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-02-11 00:14:55,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872783216] [2022-02-11 00:14:55,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:55,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:14:55,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:14:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:55,783 INFO L87 Difference]: Start difference. First operand 19777 states and 86307 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:56,120 INFO L93 Difference]: Finished difference Result 21148 states and 91258 transitions. [2022-02-11 00:14:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:14:56,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 27 [2022-02-11 00:14:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:56,203 INFO L225 Difference]: With dead ends: 21148 [2022-02-11 00:14:56,203 INFO L226 Difference]: Without dead ends: 21097 [2022-02-11 00:14:56,203 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:14:56,204 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:56,204 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 94 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21097 states. [2022-02-11 00:14:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21097 to 20386. [2022-02-11 00:14:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20386 states, 20385 states have (on average 4.351925435369144) internal successors, (88714), 20385 states have internal predecessors, (88714), 0 states have call successors, (0), 0 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 00:14:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20386 states to 20386 states and 88714 transitions. [2022-02-11 00:14:56,887 INFO L78 Accepts]: Start accepts. Automaton has 20386 states and 88714 transitions. Word has length 27 [2022-02-11 00:14:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:56,887 INFO L470 AbstractCegarLoop]: Abstraction has 20386 states and 88714 transitions. [2022-02-11 00:14:56,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:14:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 20386 states and 88714 transitions. [2022-02-11 00:14:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:14:57,162 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:57,162 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:57,180 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 00:14:57,363 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,SelfDestructingSolverStorable45 [2022-02-11 00:14:57,363 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:14:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 136448359, now seen corresponding path program 16 times [2022-02-11 00:14:57,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:57,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808099615] [2022-02-11 00:14:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:57,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:57,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808099615] [2022-02-11 00:14:57,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808099615] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:57,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521675673] [2022-02-11 00:14:57,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:14:57,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:57,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:57,405 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 00:14:57,428 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 00:14:57,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:14:57,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:57,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:14:57,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:57,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:57,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521675673] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:57,594 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:57,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-11 00:14:57,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328136458] [2022-02-11 00:14:57,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:57,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:14:57,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:14:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:14:57,596 INFO L87 Difference]: Start difference. First operand 20386 states and 88714 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:14:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:59,316 INFO L93 Difference]: Finished difference Result 53500 states and 225350 transitions. [2022-02-11 00:14:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 00:14:59,316 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 29 [2022-02-11 00:14:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:59,598 INFO L225 Difference]: With dead ends: 53500 [2022-02-11 00:14:59,598 INFO L226 Difference]: Without dead ends: 53500 [2022-02-11 00:14:59,599 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 00:14:59,599 INFO L934 BasicCegarLoop]: 126 mSDtfsCounter, 291 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:59,600 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 685 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:14:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53500 states. [2022-02-11 00:15:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53500 to 19796. [2022-02-11 00:15:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19796 states, 19795 states have (on average 4.3231624147512) internal successors, (85577), 19795 states have internal predecessors, (85577), 0 states have call successors, (0), 0 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 00:15:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19796 states to 19796 states and 85577 transitions. [2022-02-11 00:15:00,650 INFO L78 Accepts]: Start accepts. Automaton has 19796 states and 85577 transitions. Word has length 29 [2022-02-11 00:15:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:00,651 INFO L470 AbstractCegarLoop]: Abstraction has 19796 states and 85577 transitions. [2022-02-11 00:15:00,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:15:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 19796 states and 85577 transitions. [2022-02-11 00:15:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:00,699 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:00,699 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:00,717 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 00:15:00,899 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,SelfDestructingSolverStorable46 [2022-02-11 00:15:00,900 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1636435097, now seen corresponding path program 17 times [2022-02-11 00:15:00,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:00,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726281581] [2022-02-11 00:15:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:00,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:00,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726281581] [2022-02-11 00:15:00,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726281581] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:00,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117805588] [2022-02-11 00:15:00,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:15:00,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:00,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:00,937 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 00:15:00,938 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 00:15:00,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:15:00,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:00,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:00,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:01,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:01,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117805588] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:01,123 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:01,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-11 00:15:01,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034135227] [2022-02-11 00:15:01,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:01,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:15:01,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:15:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:15:01,124 INFO L87 Difference]: Start difference. First operand 19796 states and 85577 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:15:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:02,138 INFO L93 Difference]: Finished difference Result 43808 states and 178847 transitions. [2022-02-11 00:15:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 00:15:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:02,322 INFO L225 Difference]: With dead ends: 43808 [2022-02-11 00:15:02,323 INFO L226 Difference]: Without dead ends: 43528 [2022-02-11 00:15:02,323 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:15:02,324 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 569 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:02,324 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 282 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43528 states. [2022-02-11 00:15:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43528 to 24598. [2022-02-11 00:15:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24598 states, 24597 states have (on average 4.382323047526121) internal successors, (107792), 24597 states have internal predecessors, (107792), 0 states have call successors, (0), 0 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 00:15:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24598 states to 24598 states and 107792 transitions. [2022-02-11 00:15:03,568 INFO L78 Accepts]: Start accepts. Automaton has 24598 states and 107792 transitions. Word has length 29 [2022-02-11 00:15:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:03,568 INFO L470 AbstractCegarLoop]: Abstraction has 24598 states and 107792 transitions. [2022-02-11 00:15:03,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:15:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 24598 states and 107792 transitions. [2022-02-11 00:15:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:03,635 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:03,635 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:03,651 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 00:15:03,835 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,SelfDestructingSolverStorable47 [2022-02-11 00:15:03,835 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:03,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:03,836 INFO L85 PathProgramCache]: Analyzing trace with hash -115245213, now seen corresponding path program 18 times [2022-02-11 00:15:03,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:03,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60735668] [2022-02-11 00:15:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:03,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:03,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:03,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60735668] [2022-02-11 00:15:03,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60735668] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:03,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567825361] [2022-02-11 00:15:03,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:15:03,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:03,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:03,872 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 00:15:03,873 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 00:15:03,897 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:15:03,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:03,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:03,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:03,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:04,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567825361] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:04,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:04,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:15:04,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511287732] [2022-02-11 00:15:04,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:04,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:15:04,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:04,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:15:04,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:15:04,035 INFO L87 Difference]: Start difference. First operand 24598 states and 107792 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:15:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:05,068 INFO L93 Difference]: Finished difference Result 44391 states and 182619 transitions. [2022-02-11 00:15:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:15:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:05,300 INFO L225 Difference]: With dead ends: 44391 [2022-02-11 00:15:05,300 INFO L226 Difference]: Without dead ends: 44391 [2022-02-11 00:15:05,300 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:15:05,301 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 424 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:05,301 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 295 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:05,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44391 states. [2022-02-11 00:15:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44391 to 24443. [2022-02-11 00:15:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24443 states, 24442 states have (on average 4.371900826446281) internal successors, (106858), 24442 states have internal predecessors, (106858), 0 states have call successors, (0), 0 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 00:15:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24443 states to 24443 states and 106858 transitions. [2022-02-11 00:15:06,289 INFO L78 Accepts]: Start accepts. Automaton has 24443 states and 106858 transitions. Word has length 29 [2022-02-11 00:15:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:06,289 INFO L470 AbstractCegarLoop]: Abstraction has 24443 states and 106858 transitions. [2022-02-11 00:15:06,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:15:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 24443 states and 106858 transitions. [2022-02-11 00:15:06,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:06,352 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:06,352 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:06,369 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 00:15:06,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-11 00:15:06,553 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash 331365663, now seen corresponding path program 19 times [2022-02-11 00:15:06,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:06,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562674177] [2022-02-11 00:15:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:06,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:06,589 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:06,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562674177] [2022-02-11 00:15:06,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562674177] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:06,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562625485] [2022-02-11 00:15:06,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:15:06,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:06,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:06,590 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 00:15:06,591 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 00:15:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:06,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:06,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:06,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:06,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562625485] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:06,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:06,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:15:06,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511192627] [2022-02-11 00:15:06,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:06,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:15:06,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:06,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:15:06,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:15:06,740 INFO L87 Difference]: Start difference. First operand 24443 states and 106858 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:15:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:07,588 INFO L93 Difference]: Finished difference Result 32700 states and 137404 transitions. [2022-02-11 00:15:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-11 00:15:07,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:07,716 INFO L225 Difference]: With dead ends: 32700 [2022-02-11 00:15:07,717 INFO L226 Difference]: Without dead ends: 32680 [2022-02-11 00:15:07,717 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:15:07,717 INFO L934 BasicCegarLoop]: 71 mSDtfsCounter, 221 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:07,718 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 441 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:15:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32680 states. [2022-02-11 00:15:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32680 to 24521. [2022-02-11 00:15:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24521 states, 24520 states have (on average 4.369453507340946) internal successors, (107139), 24520 states have internal predecessors, (107139), 0 states have call successors, (0), 0 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 00:15:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24521 states to 24521 states and 107139 transitions. [2022-02-11 00:15:08,841 INFO L78 Accepts]: Start accepts. Automaton has 24521 states and 107139 transitions. Word has length 29 [2022-02-11 00:15:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:08,842 INFO L470 AbstractCegarLoop]: Abstraction has 24521 states and 107139 transitions. [2022-02-11 00:15:08,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 00:15:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 24521 states and 107139 transitions. [2022-02-11 00:15:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:08,929 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:08,930 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:08,947 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 00:15:09,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-11 00:15:09,130 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:09,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1556022237, now seen corresponding path program 20 times [2022-02-11 00:15:09,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:09,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550445129] [2022-02-11 00:15:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:09,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:09,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:09,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550445129] [2022-02-11 00:15:09,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550445129] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:09,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161989667] [2022-02-11 00:15:09,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:15:09,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:09,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:09,169 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:09,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-11 00:15:09,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:15:09,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:09,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:09,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:09,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:09,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161989667] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:09,363 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:09,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-02-11 00:15:09,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988607842] [2022-02-11 00:15:09,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:09,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:15:09,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:15:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:15:09,364 INFO L87 Difference]: Start difference. First operand 24521 states and 107139 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 00:15:10,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:10,682 INFO L93 Difference]: Finished difference Result 84322 states and 354953 transitions. [2022-02-11 00:15:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-11 00:15:10,683 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:11,584 INFO L225 Difference]: With dead ends: 84322 [2022-02-11 00:15:11,585 INFO L226 Difference]: Without dead ends: 84322 [2022-02-11 00:15:11,585 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-02-11 00:15:11,587 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 481 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:11,587 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 293 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:11,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84322 states. [2022-02-11 00:15:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84322 to 31834. [2022-02-11 00:15:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 4.49231929130148) internal successors, (143004), 31833 states have internal predecessors, (143004), 0 states have call successors, (0), 0 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 00:15:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 143004 transitions. [2022-02-11 00:15:13,577 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 143004 transitions. Word has length 29 [2022-02-11 00:15:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:13,577 INFO L470 AbstractCegarLoop]: Abstraction has 31834 states and 143004 transitions. [2022-02-11 00:15:13,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 00:15:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 143004 transitions. [2022-02-11 00:15:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:13,673 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:13,673 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:13,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:13,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-02-11 00:15:13,874 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1231344803, now seen corresponding path program 21 times [2022-02-11 00:15:13,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:13,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327700838] [2022-02-11 00:15:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:13,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:13,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327700838] [2022-02-11 00:15:13,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327700838] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:13,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276795572] [2022-02-11 00:15:13,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:15:13,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:13,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:13,906 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:13,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-11 00:15:13,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:15:13,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:13,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:14,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:14,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276795572] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:14,064 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:14,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-02-11 00:15:14,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887322220] [2022-02-11 00:15:14,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:14,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:15:14,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:15:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:15:14,065 INFO L87 Difference]: Start difference. First operand 31834 states and 143004 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:15:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:15,315 INFO L93 Difference]: Finished difference Result 53630 states and 225777 transitions. [2022-02-11 00:15:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 00:15:15,316 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:15,579 INFO L225 Difference]: With dead ends: 53630 [2022-02-11 00:15:15,579 INFO L226 Difference]: Without dead ends: 53574 [2022-02-11 00:15:15,580 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-02-11 00:15:15,580 INFO L934 BasicCegarLoop]: 79 mSDtfsCounter, 321 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:15,580 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 492 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:15:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53574 states. [2022-02-11 00:15:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53574 to 31834. [2022-02-11 00:15:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 4.492005151886407) internal successors, (142994), 31833 states have internal predecessors, (142994), 0 states have call successors, (0), 0 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 00:15:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 142994 transitions. [2022-02-11 00:15:17,106 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 142994 transitions. Word has length 29 [2022-02-11 00:15:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:17,106 INFO L470 AbstractCegarLoop]: Abstraction has 31834 states and 142994 transitions. [2022-02-11 00:15:17,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 00:15:17,106 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 142994 transitions. [2022-02-11 00:15:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:17,207 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:17,207 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:17,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:17,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:17,409 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:17,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 172392223, now seen corresponding path program 22 times [2022-02-11 00:15:17,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:17,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714368025] [2022-02-11 00:15:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:17,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:17,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:17,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714368025] [2022-02-11 00:15:17,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714368025] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:17,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743532946] [2022-02-11 00:15:17,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:15:17,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:17,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:17,444 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:17,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-11 00:15:17,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:15:17,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:17,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:17,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:17,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:17,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743532946] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:17,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:17,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-02-11 00:15:17,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356138755] [2022-02-11 00:15:17,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:17,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:15:17,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:17,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:15:17,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:15:17,604 INFO L87 Difference]: Start difference. First operand 31834 states and 142994 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 00:15:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:18,975 INFO L93 Difference]: Finished difference Result 63201 states and 266555 transitions. [2022-02-11 00:15:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:15:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 29 [2022-02-11 00:15:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:19,647 INFO L225 Difference]: With dead ends: 63201 [2022-02-11 00:15:19,647 INFO L226 Difference]: Without dead ends: 63201 [2022-02-11 00:15:19,647 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-02-11 00:15:19,648 INFO L934 BasicCegarLoop]: 65 mSDtfsCounter, 352 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:19,648 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 476 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:15:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63201 states. [2022-02-11 00:15:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63201 to 31971. [2022-02-11 00:15:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31971 states, 31970 states have (on average 4.490710040663122) internal successors, (143568), 31970 states have internal predecessors, (143568), 0 states have call successors, (0), 0 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 00:15:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31971 states to 31971 states and 143568 transitions. [2022-02-11 00:15:21,360 INFO L78 Accepts]: Start accepts. Automaton has 31971 states and 143568 transitions. Word has length 29 [2022-02-11 00:15:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:21,360 INFO L470 AbstractCegarLoop]: Abstraction has 31971 states and 143568 transitions. [2022-02-11 00:15:21,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 00:15:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 31971 states and 143568 transitions. [2022-02-11 00:15:21,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:21,459 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:21,459 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:21,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-02-11 00:15:21,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-02-11 00:15:21,659 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash 619003099, now seen corresponding path program 23 times [2022-02-11 00:15:21,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:21,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958675009] [2022-02-11 00:15:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:21,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:21,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:21,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958675009] [2022-02-11 00:15:21,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958675009] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:21,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21613054] [2022-02-11 00:15:21,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:15:21,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:21,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:21,699 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:21,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-11 00:15:21,730 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 00:15:21,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:21,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:21,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:21,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:21,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21613054] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:21,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:21,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-02-11 00:15:21,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752588718] [2022-02-11 00:15:21,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:21,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:15:21,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:15:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:15:21,862 INFO L87 Difference]: Start difference. First operand 31971 states and 143568 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 00:15:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:23,119 INFO L93 Difference]: Finished difference Result 64043 states and 270031 transitions. [2022-02-11 00:15:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-11 00:15:23,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 29 [2022-02-11 00:15:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:23,483 INFO L225 Difference]: With dead ends: 64043 [2022-02-11 00:15:23,484 INFO L226 Difference]: Without dead ends: 64003 [2022-02-11 00:15:23,484 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:15:23,484 INFO L934 BasicCegarLoop]: 57 mSDtfsCounter, 469 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:23,484 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 339 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64003 states. [2022-02-11 00:15:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64003 to 31981. [2022-02-11 00:15:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31981 states, 31980 states have (on average 4.49015009380863) internal successors, (143595), 31980 states have internal predecessors, (143595), 0 states have call successors, (0), 0 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 00:15:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31981 states to 31981 states and 143595 transitions. [2022-02-11 00:15:25,151 INFO L78 Accepts]: Start accepts. Automaton has 31981 states and 143595 transitions. Word has length 29 [2022-02-11 00:15:25,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:25,152 INFO L470 AbstractCegarLoop]: Abstraction has 31981 states and 143595 transitions. [2022-02-11 00:15:25,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 00:15:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 31981 states and 143595 transitions. [2022-02-11 00:15:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:25,253 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:25,253 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:25,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:25,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:25,454 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -96354205, now seen corresponding path program 24 times [2022-02-11 00:15:25,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:25,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333259983] [2022-02-11 00:15:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:25,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:25,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333259983] [2022-02-11 00:15:25,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333259983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:25,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545492262] [2022-02-11 00:15:25,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:15:25,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:25,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:25,499 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:25,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-11 00:15:25,526 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 00:15:25,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:25,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:25,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:25,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:25,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545492262] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:25,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:25,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-02-11 00:15:25,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892695015] [2022-02-11 00:15:25,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:25,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:15:25,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:15:25,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:15:25,665 INFO L87 Difference]: Start difference. First operand 31981 states and 143595 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 00:15:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:26,952 INFO L93 Difference]: Finished difference Result 53971 states and 230205 transitions. [2022-02-11 00:15:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 00:15:26,953 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 29 [2022-02-11 00:15:26,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:27,230 INFO L225 Difference]: With dead ends: 53971 [2022-02-11 00:15:27,230 INFO L226 Difference]: Without dead ends: 53971 [2022-02-11 00:15:27,230 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:15:27,230 INFO L934 BasicCegarLoop]: 58 mSDtfsCounter, 415 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:27,231 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 404 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:15:27,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53971 states. [2022-02-11 00:15:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53971 to 30565. [2022-02-11 00:15:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30565 states, 30564 states have (on average 4.463290145268944) internal successors, (136416), 30564 states have internal predecessors, (136416), 0 states have call successors, (0), 0 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 00:15:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30565 states to 30565 states and 136416 transitions. [2022-02-11 00:15:28,750 INFO L78 Accepts]: Start accepts. Automaton has 30565 states and 136416 transitions. Word has length 29 [2022-02-11 00:15:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:28,751 INFO L470 AbstractCegarLoop]: Abstraction has 30565 states and 136416 transitions. [2022-02-11 00:15:28,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 00:15:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 30565 states and 136416 transitions. [2022-02-11 00:15:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:28,840 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:28,840 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:28,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:29,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:29,041 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:29,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1931600191, now seen corresponding path program 25 times [2022-02-11 00:15:29,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:29,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168558404] [2022-02-11 00:15:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:29,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:29,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:29,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168558404] [2022-02-11 00:15:29,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168558404] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:29,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697926175] [2022-02-11 00:15:29,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:15:29,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:29,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:29,078 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:29,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-11 00:15:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:29,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:29,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:29,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:29,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697926175] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:29,255 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:29,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-02-11 00:15:29,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890705867] [2022-02-11 00:15:29,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:29,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:15:29,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:15:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:15:29,256 INFO L87 Difference]: Start difference. First operand 30565 states and 136416 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 00:15:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:30,378 INFO L93 Difference]: Finished difference Result 54874 states and 230950 transitions. [2022-02-11 00:15:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 00:15:30,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 29 [2022-02-11 00:15:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:30,626 INFO L225 Difference]: With dead ends: 54874 [2022-02-11 00:15:30,626 INFO L226 Difference]: Without dead ends: 54814 [2022-02-11 00:15:30,626 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:15:30,626 INFO L934 BasicCegarLoop]: 54 mSDtfsCounter, 443 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:30,627 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 390 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:15:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54814 states. [2022-02-11 00:15:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54814 to 30989. [2022-02-11 00:15:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30989 states, 30988 states have (on average 4.461081709048664) internal successors, (138240), 30988 states have internal predecessors, (138240), 0 states have call successors, (0), 0 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 00:15:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30989 states to 30989 states and 138240 transitions. [2022-02-11 00:15:32,094 INFO L78 Accepts]: Start accepts. Automaton has 30989 states and 138240 transitions. Word has length 29 [2022-02-11 00:15:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:32,094 INFO L470 AbstractCegarLoop]: Abstraction has 30989 states and 138240 transitions. [2022-02-11 00:15:32,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 00:15:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 30989 states and 138240 transitions. [2022-02-11 00:15:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:32,170 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:32,170 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:32,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:32,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-11 00:15:32,370 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:32,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:32,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1226629401, now seen corresponding path program 26 times [2022-02-11 00:15:32,371 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:32,371 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613637785] [2022-02-11 00:15:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:32,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:32,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:32,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613637785] [2022-02-11 00:15:32,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613637785] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:32,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65187364] [2022-02-11 00:15:32,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:15:32,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:32,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:32,413 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:32,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-11 00:15:32,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:15:32,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:32,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:32,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:32,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:32,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65187364] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:32,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:32,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-02-11 00:15:32,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837849789] [2022-02-11 00:15:32,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:32,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:15:32,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:32,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:15:32,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:15:32,613 INFO L87 Difference]: Start difference. First operand 30989 states and 138240 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:15:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:34,049 INFO L93 Difference]: Finished difference Result 67378 states and 285832 transitions. [2022-02-11 00:15:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 00:15:34,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:34,698 INFO L225 Difference]: With dead ends: 67378 [2022-02-11 00:15:34,699 INFO L226 Difference]: Without dead ends: 67378 [2022-02-11 00:15:34,699 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:15:34,700 INFO L934 BasicCegarLoop]: 54 mSDtfsCounter, 535 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:34,700 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 346 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:15:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67378 states. [2022-02-11 00:15:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67378 to 29898. [2022-02-11 00:15:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29898 states, 29897 states have (on average 4.434090376960899) internal successors, (132566), 29897 states have internal predecessors, (132566), 0 states have call successors, (0), 0 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 00:15:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29898 states to 29898 states and 132566 transitions. [2022-02-11 00:15:35,903 INFO L78 Accepts]: Start accepts. Automaton has 29898 states and 132566 transitions. Word has length 29 [2022-02-11 00:15:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:35,903 INFO L470 AbstractCegarLoop]: Abstraction has 29898 states and 132566 transitions. [2022-02-11 00:15:35,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:15:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 29898 states and 132566 transitions. [2022-02-11 00:15:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:36,273 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:36,273 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:36,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:36,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-11 00:15:36,474 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:36,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1668470631, now seen corresponding path program 27 times [2022-02-11 00:15:36,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:36,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96321074] [2022-02-11 00:15:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:36,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:36,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96321074] [2022-02-11 00:15:36,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96321074] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:36,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244207144] [2022-02-11 00:15:36,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:15:36,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:36,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:36,511 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:36,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-11 00:15:36,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:15:36,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:36,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:36,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:36,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:36,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244207144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:36,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:36,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-02-11 00:15:36,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248765149] [2022-02-11 00:15:36,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:36,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:15:36,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:15:36,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:15:36,670 INFO L87 Difference]: Start difference. First operand 29898 states and 132566 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 00:15:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:37,471 INFO L93 Difference]: Finished difference Result 44092 states and 184185 transitions. [2022-02-11 00:15:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 00:15:37,472 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 29 [2022-02-11 00:15:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:37,667 INFO L225 Difference]: With dead ends: 44092 [2022-02-11 00:15:37,667 INFO L226 Difference]: Without dead ends: 44008 [2022-02-11 00:15:37,667 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:15:37,668 INFO L934 BasicCegarLoop]: 52 mSDtfsCounter, 350 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:37,668 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 469 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:15:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44008 states. [2022-02-11 00:15:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44008 to 28760. [2022-02-11 00:15:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28760 states, 28759 states have (on average 4.440905455683438) internal successors, (127716), 28759 states have internal predecessors, (127716), 0 states have call successors, (0), 0 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 00:15:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28760 states to 28760 states and 127716 transitions. [2022-02-11 00:15:38,888 INFO L78 Accepts]: Start accepts. Automaton has 28760 states and 127716 transitions. Word has length 29 [2022-02-11 00:15:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:38,888 INFO L470 AbstractCegarLoop]: Abstraction has 28760 states and 127716 transitions. [2022-02-11 00:15:38,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 00:15:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 28760 states and 127716 transitions. [2022-02-11 00:15:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:38,968 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:38,969 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:38,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-11 00:15:39,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-02-11 00:15:39,169 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1199527587, now seen corresponding path program 28 times [2022-02-11 00:15:39,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:39,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146094969] [2022-02-11 00:15:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:39,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:39,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:39,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146094969] [2022-02-11 00:15:39,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146094969] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:39,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612215526] [2022-02-11 00:15:39,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:15:39,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:39,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:39,214 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:39,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-11 00:15:39,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:15:39,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:39,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:39,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:39,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:39,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612215526] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:39,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:39,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:15:39,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712924361] [2022-02-11 00:15:39,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:39,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:15:39,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:15:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:15:39,413 INFO L87 Difference]: Start difference. First operand 28760 states and 127716 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:15:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:40,461 INFO L93 Difference]: Finished difference Result 60388 states and 252684 transitions. [2022-02-11 00:15:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:15:40,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:40,724 INFO L225 Difference]: With dead ends: 60388 [2022-02-11 00:15:40,725 INFO L226 Difference]: Without dead ends: 60388 [2022-02-11 00:15:40,725 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:15:40,725 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 535 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:40,725 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 232 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60388 states. [2022-02-11 00:15:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60388 to 30620. [2022-02-11 00:15:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30620 states, 30619 states have (on average 4.473431529442503) internal successors, (136972), 30619 states have internal predecessors, (136972), 0 states have call successors, (0), 0 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 00:15:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30620 states to 30620 states and 136972 transitions. [2022-02-11 00:15:42,130 INFO L78 Accepts]: Start accepts. Automaton has 30620 states and 136972 transitions. Word has length 29 [2022-02-11 00:15:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:42,130 INFO L470 AbstractCegarLoop]: Abstraction has 30620 states and 136972 transitions. [2022-02-11 00:15:42,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:15:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 30620 states and 136972 transitions. [2022-02-11 00:15:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:42,216 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:42,216 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:42,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:42,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-11 00:15:42,417 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash -308072669, now seen corresponding path program 29 times [2022-02-11 00:15:42,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:42,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853508037] [2022-02-11 00:15:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:42,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:42,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:42,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853508037] [2022-02-11 00:15:42,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853508037] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:42,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280261680] [2022-02-11 00:15:42,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:15:42,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:42,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:42,450 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:42,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-11 00:15:42,478 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:15:42,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:42,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:42,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:42,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:42,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280261680] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:42,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:42,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:15:42,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647543263] [2022-02-11 00:15:42,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:42,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:15:42,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:15:42,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:15:42,637 INFO L87 Difference]: Start difference. First operand 30620 states and 136972 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:15:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:43,555 INFO L93 Difference]: Finished difference Result 41767 states and 177773 transitions. [2022-02-11 00:15:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-11 00:15:43,555 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:43,731 INFO L225 Difference]: With dead ends: 41767 [2022-02-11 00:15:43,731 INFO L226 Difference]: Without dead ends: 41739 [2022-02-11 00:15:43,731 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-02-11 00:15:43,731 INFO L934 BasicCegarLoop]: 77 mSDtfsCounter, 224 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:43,731 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 380 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41739 states. [2022-02-11 00:15:44,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41739 to 30609. [2022-02-11 00:15:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30609 states, 30608 states have (on average 4.473078933612127) internal successors, (136912), 30608 states have internal predecessors, (136912), 0 states have call successors, (0), 0 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 00:15:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30609 states to 30609 states and 136912 transitions. [2022-02-11 00:15:44,995 INFO L78 Accepts]: Start accepts. Automaton has 30609 states and 136912 transitions. Word has length 29 [2022-02-11 00:15:44,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:44,995 INFO L470 AbstractCegarLoop]: Abstraction has 30609 states and 136912 transitions. [2022-02-11 00:15:44,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:15:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 30609 states and 136912 transitions. [2022-02-11 00:15:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:45,076 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:45,076 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:45,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-11 00:15:45,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-11 00:15:45,277 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1367025249, now seen corresponding path program 30 times [2022-02-11 00:15:45,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:45,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360773928] [2022-02-11 00:15:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:45,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:45,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360773928] [2022-02-11 00:15:45,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360773928] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:45,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700832778] [2022-02-11 00:15:45,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:15:45,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:45,314 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:45,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-11 00:15:45,338 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:15:45,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:45,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:45,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:45,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:45,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700832778] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:45,492 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:45,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:15:45,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802760265] [2022-02-11 00:15:45,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:45,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:15:45,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:15:45,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:15:45,493 INFO L87 Difference]: Start difference. First operand 30609 states and 136912 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:15:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:46,528 INFO L93 Difference]: Finished difference Result 47385 states and 201554 transitions. [2022-02-11 00:15:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:15:46,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:46,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:46,744 INFO L225 Difference]: With dead ends: 47385 [2022-02-11 00:15:46,744 INFO L226 Difference]: Without dead ends: 47385 [2022-02-11 00:15:46,744 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-02-11 00:15:46,745 INFO L934 BasicCegarLoop]: 75 mSDtfsCounter, 279 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:46,745 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 383 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:46,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47385 states. [2022-02-11 00:15:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47385 to 30746. [2022-02-11 00:15:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30746 states, 30745 states have (on average 4.471816555537486) internal successors, (137486), 30745 states have internal predecessors, (137486), 0 states have call successors, (0), 0 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 00:15:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30746 states to 30746 states and 137486 transitions. [2022-02-11 00:15:47,764 INFO L78 Accepts]: Start accepts. Automaton has 30746 states and 137486 transitions. Word has length 29 [2022-02-11 00:15:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:47,764 INFO L470 AbstractCegarLoop]: Abstraction has 30746 states and 137486 transitions. [2022-02-11 00:15:47,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:15:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 30746 states and 137486 transitions. [2022-02-11 00:15:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:48,082 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:48,082 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:48,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:48,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:48,302 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:48,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash -920414373, now seen corresponding path program 31 times [2022-02-11 00:15:48,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:48,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592410474] [2022-02-11 00:15:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:48,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:48,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:48,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592410474] [2022-02-11 00:15:48,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592410474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:48,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516075651] [2022-02-11 00:15:48,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:15:48,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:48,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:48,337 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:48,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-11 00:15:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:48,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:48,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:48,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:48,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516075651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:48,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:48,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:15:48,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020346088] [2022-02-11 00:15:48,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:48,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:15:48,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:15:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:15:48,530 INFO L87 Difference]: Start difference. First operand 30746 states and 137486 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:15:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:49,317 INFO L93 Difference]: Finished difference Result 57968 states and 241203 transitions. [2022-02-11 00:15:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-11 00:15:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:49,812 INFO L225 Difference]: With dead ends: 57968 [2022-02-11 00:15:49,812 INFO L226 Difference]: Without dead ends: 57948 [2022-02-11 00:15:49,812 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-02-11 00:15:49,812 INFO L934 BasicCegarLoop]: 54 mSDtfsCounter, 523 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:49,812 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 289 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57948 states. [2022-02-11 00:15:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57948 to 30746. [2022-02-11 00:15:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30746 states, 30745 states have (on average 4.471491299398276) internal successors, (137476), 30745 states have internal predecessors, (137476), 0 states have call successors, (0), 0 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 00:15:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30746 states to 30746 states and 137476 transitions. [2022-02-11 00:15:50,889 INFO L78 Accepts]: Start accepts. Automaton has 30746 states and 137476 transitions. Word has length 29 [2022-02-11 00:15:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:50,890 INFO L470 AbstractCegarLoop]: Abstraction has 30746 states and 137476 transitions. [2022-02-11 00:15:50,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:15:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 30746 states and 137476 transitions. [2022-02-11 00:15:51,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:51,225 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:51,225 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:51,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:51,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:51,426 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:51,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:51,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1635771677, now seen corresponding path program 32 times [2022-02-11 00:15:51,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:51,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280989567] [2022-02-11 00:15:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:51,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:51,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:51,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280989567] [2022-02-11 00:15:51,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280989567] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:51,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400896535] [2022-02-11 00:15:51,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:15:51,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:51,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:51,461 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:51,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-11 00:15:51,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:15:51,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:51,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:51,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:51,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:51,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400896535] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:51,618 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:51,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-11 00:15:51,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903249388] [2022-02-11 00:15:51,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:51,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:15:51,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:15:51,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:15:51,619 INFO L87 Difference]: Start difference. First operand 30746 states and 137476 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:15:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:53,506 INFO L93 Difference]: Finished difference Result 66647 states and 285464 transitions. [2022-02-11 00:15:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 00:15:53,507 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:53,869 INFO L225 Difference]: With dead ends: 66647 [2022-02-11 00:15:53,870 INFO L226 Difference]: Without dead ends: 66647 [2022-02-11 00:15:53,870 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=565, Invalid=2191, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 00:15:53,870 INFO L934 BasicCegarLoop]: 105 mSDtfsCounter, 427 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:53,870 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 758 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:15:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66647 states. [2022-02-11 00:15:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66647 to 31294. [2022-02-11 00:15:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31294 states, 31293 states have (on average 4.46655801616975) internal successors, (139772), 31293 states have internal predecessors, (139772), 0 states have call successors, (0), 0 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 00:15:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31294 states to 31294 states and 139772 transitions. [2022-02-11 00:15:55,295 INFO L78 Accepts]: Start accepts. Automaton has 31294 states and 139772 transitions. Word has length 29 [2022-02-11 00:15:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:55,296 INFO L470 AbstractCegarLoop]: Abstraction has 31294 states and 139772 transitions. [2022-02-11 00:15:55,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:15:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 31294 states and 139772 transitions. [2022-02-11 00:15:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:55,373 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:55,373 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:55,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-11 00:15:55,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:55,574 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash 823949633, now seen corresponding path program 33 times [2022-02-11 00:15:55,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:55,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741076852] [2022-02-11 00:15:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:55,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:55,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:55,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741076852] [2022-02-11 00:15:55,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741076852] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:55,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138280222] [2022-02-11 00:15:55,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:15:55,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:55,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:55,604 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:55,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-11 00:15:55,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:15:55,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:55,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:55,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:55,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:15:55,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138280222] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:55,754 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:55,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-11 00:15:55,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358293421] [2022-02-11 00:15:55,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:55,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:15:55,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:55,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:15:55,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:15:55,755 INFO L87 Difference]: Start difference. First operand 31294 states and 139772 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:15:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:57,049 INFO L93 Difference]: Finished difference Result 67722 states and 279320 transitions. [2022-02-11 00:15:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 00:15:57,049 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2022-02-11 00:15:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:57,373 INFO L225 Difference]: With dead ends: 67722 [2022-02-11 00:15:57,373 INFO L226 Difference]: Without dead ends: 67522 [2022-02-11 00:15:57,373 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2022-02-11 00:15:57,373 INFO L934 BasicCegarLoop]: 61 mSDtfsCounter, 584 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:57,374 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 383 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67522 states. [2022-02-11 00:15:58,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67522 to 31300. [2022-02-11 00:15:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31300 states, 31299 states have (on average 4.465414230486597) internal successors, (139763), 31299 states have internal predecessors, (139763), 0 states have call successors, (0), 0 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 00:15:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31300 states to 31300 states and 139763 transitions. [2022-02-11 00:15:58,761 INFO L78 Accepts]: Start accepts. Automaton has 31300 states and 139763 transitions. Word has length 29 [2022-02-11 00:15:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:58,761 INFO L470 AbstractCegarLoop]: Abstraction has 31300 states and 139763 transitions. [2022-02-11 00:15:58,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:15:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 31300 states and 139763 transitions. [2022-02-11 00:15:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:15:58,835 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:58,835 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:58,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:59,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:59,036 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:15:59,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1685460577, now seen corresponding path program 34 times [2022-02-11 00:15:59,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:59,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417557813] [2022-02-11 00:15:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:59,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:59,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:59,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417557813] [2022-02-11 00:15:59,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417557813] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:59,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700356219] [2022-02-11 00:15:59,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:15:59,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:59,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:59,078 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:59,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-11 00:15:59,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:15:59,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:59,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:15:59,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:59,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:59,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700356219] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:59,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:59,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-11 00:15:59,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602614895] [2022-02-11 00:15:59,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:59,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:15:59,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:15:59,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:15:59,265 INFO L87 Difference]: Start difference. First operand 31300 states and 139763 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 00:16:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:00,911 INFO L93 Difference]: Finished difference Result 57331 states and 248639 transitions. [2022-02-11 00:16:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 00:16:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:01,452 INFO L225 Difference]: With dead ends: 57331 [2022-02-11 00:16:01,452 INFO L226 Difference]: Without dead ends: 57311 [2022-02-11 00:16:01,455 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 00:16:01,456 INFO L934 BasicCegarLoop]: 117 mSDtfsCounter, 261 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:01,456 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 611 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:16:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57311 states. [2022-02-11 00:16:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57311 to 31991. [2022-02-11 00:16:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31991 states, 31990 states have (on average 4.448671459831197) internal successors, (142313), 31990 states have internal predecessors, (142313), 0 states have call successors, (0), 0 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 00:16:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31991 states to 31991 states and 142313 transitions. [2022-02-11 00:16:02,622 INFO L78 Accepts]: Start accepts. Automaton has 31991 states and 142313 transitions. Word has length 29 [2022-02-11 00:16:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:02,622 INFO L470 AbstractCegarLoop]: Abstraction has 31991 states and 142313 transitions. [2022-02-11 00:16:02,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 00:16:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 31991 states and 142313 transitions. [2022-02-11 00:16:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:02,703 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:02,703 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:02,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:02,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-11 00:16:02,907 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:02,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:02,908 INFO L85 PathProgramCache]: Analyzing trace with hash 620018621, now seen corresponding path program 35 times [2022-02-11 00:16:02,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:02,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455868915] [2022-02-11 00:16:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:02,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:02,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:02,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455868915] [2022-02-11 00:16:02,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455868915] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:02,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929183941] [2022-02-11 00:16:02,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:16:02,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:02,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:02,957 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:02,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-11 00:16:02,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:16:02,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:02,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:02,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:03,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:03,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929183941] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:03,426 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:03,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-11 00:16:03,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649020630] [2022-02-11 00:16:03,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:03,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:16:03,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:16:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:16:03,427 INFO L87 Difference]: Start difference. First operand 31991 states and 142313 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 00:16:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:04,371 INFO L93 Difference]: Finished difference Result 56534 states and 233979 transitions. [2022-02-11 00:16:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 00:16:04,372 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:04,892 INFO L225 Difference]: With dead ends: 56534 [2022-02-11 00:16:04,893 INFO L226 Difference]: Without dead ends: 56434 [2022-02-11 00:16:04,893 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:16:04,893 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 545 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:04,893 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 338 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:16:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56434 states. [2022-02-11 00:16:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56434 to 32469. [2022-02-11 00:16:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32469 states, 32468 states have (on average 4.436368116299125) internal successors, (144040), 32468 states have internal predecessors, (144040), 0 states have call successors, (0), 0 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 00:16:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32469 states to 32469 states and 144040 transitions. [2022-02-11 00:16:05,987 INFO L78 Accepts]: Start accepts. Automaton has 32469 states and 144040 transitions. Word has length 29 [2022-02-11 00:16:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:05,987 INFO L470 AbstractCegarLoop]: Abstraction has 32469 states and 144040 transitions. [2022-02-11 00:16:05,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 00:16:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 32469 states and 144040 transitions. [2022-02-11 00:16:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:06,069 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:06,069 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:06,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-11 00:16:06,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-11 00:16:06,270 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1534820831, now seen corresponding path program 16 times [2022-02-11 00:16:06,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:06,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267111299] [2022-02-11 00:16:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:06,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:06,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:06,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267111299] [2022-02-11 00:16:06,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267111299] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:06,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417266208] [2022-02-11 00:16:06,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:16:06,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:06,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:06,304 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:06,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-11 00:16:06,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:16:06,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:06,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:06,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:06,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:06,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417266208] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:06,711 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:06,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-11 00:16:06,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211092418] [2022-02-11 00:16:06,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:06,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:16:06,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:16:06,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:16:06,712 INFO L87 Difference]: Start difference. First operand 32469 states and 144040 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:16:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:08,602 INFO L93 Difference]: Finished difference Result 80270 states and 344343 transitions. [2022-02-11 00:16:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 00:16:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:08,996 INFO L225 Difference]: With dead ends: 80270 [2022-02-11 00:16:08,996 INFO L226 Difference]: Without dead ends: 80270 [2022-02-11 00:16:08,997 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 00:16:08,997 INFO L934 BasicCegarLoop]: 126 mSDtfsCounter, 255 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:08,997 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 701 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:16:09,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80270 states. [2022-02-11 00:16:10,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80270 to 31572. [2022-02-11 00:16:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31572 states, 31571 states have (on average 4.398910392448767) internal successors, (138878), 31571 states have internal predecessors, (138878), 0 states have call successors, (0), 0 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 00:16:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31572 states to 31572 states and 138878 transitions. [2022-02-11 00:16:10,719 INFO L78 Accepts]: Start accepts. Automaton has 31572 states and 138878 transitions. Word has length 29 [2022-02-11 00:16:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:10,719 INFO L470 AbstractCegarLoop]: Abstraction has 31572 states and 138878 transitions. [2022-02-11 00:16:10,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:16:10,720 INFO L276 IsEmpty]: Start isEmpty. Operand 31572 states and 138878 transitions. [2022-02-11 00:16:10,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:10,815 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:10,815 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:10,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:11,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-11 00:16:11,016 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash 285954147, now seen corresponding path program 17 times [2022-02-11 00:16:11,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:11,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052246525] [2022-02-11 00:16:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:11,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:11,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:11,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052246525] [2022-02-11 00:16:11,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052246525] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:11,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917842142] [2022-02-11 00:16:11,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:16:11,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:11,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:11,072 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:11,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-11 00:16:11,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:16:11,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:11,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:11,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:11,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:11,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917842142] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:11,234 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:11,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-11 00:16:11,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967711494] [2022-02-11 00:16:11,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:11,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:16:11,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:16:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:16:11,235 INFO L87 Difference]: Start difference. First operand 31572 states and 138878 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 00:16:12,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:12,516 INFO L93 Difference]: Finished difference Result 65127 states and 271613 transitions. [2022-02-11 00:16:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 00:16:12,517 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:12,830 INFO L225 Difference]: With dead ends: 65127 [2022-02-11 00:16:12,830 INFO L226 Difference]: Without dead ends: 64887 [2022-02-11 00:16:12,830 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:16:12,831 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 455 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:12,831 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 316 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:16:13,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64887 states. [2022-02-11 00:16:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64887 to 39278. [2022-02-11 00:16:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39278 states, 39277 states have (on average 4.461567838684217) internal successors, (175237), 39277 states have internal predecessors, (175237), 0 states have call successors, (0), 0 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 00:16:15,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39278 states to 39278 states and 175237 transitions. [2022-02-11 00:16:15,016 INFO L78 Accepts]: Start accepts. Automaton has 39278 states and 175237 transitions. Word has length 29 [2022-02-11 00:16:15,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:15,016 INFO L470 AbstractCegarLoop]: Abstraction has 39278 states and 175237 transitions. [2022-02-11 00:16:15,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 00:16:15,016 INFO L276 IsEmpty]: Start isEmpty. Operand 39278 states and 175237 transitions. [2022-02-11 00:16:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:15,179 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:15,180 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:15,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:15,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:15,395 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:15,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1167414617, now seen corresponding path program 18 times [2022-02-11 00:16:15,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:15,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266380085] [2022-02-11 00:16:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:15,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:15,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:15,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266380085] [2022-02-11 00:16:15,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266380085] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:15,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887046621] [2022-02-11 00:16:15,427 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:16:15,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:15,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:15,428 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:15,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-11 00:16:15,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:16:15,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:15,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:15,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:15,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:15,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887046621] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:15,604 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:15,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:16:15,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633803212] [2022-02-11 00:16:15,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:15,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:16:15,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:16:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:16:15,605 INFO L87 Difference]: Start difference. First operand 39278 states and 175237 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:16:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:16,939 INFO L93 Difference]: Finished difference Result 68394 states and 287238 transitions. [2022-02-11 00:16:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:16:16,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:17,326 INFO L225 Difference]: With dead ends: 68394 [2022-02-11 00:16:17,327 INFO L226 Difference]: Without dead ends: 68394 [2022-02-11 00:16:17,327 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:16:17,327 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 519 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:17,327 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 253 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:16:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68394 states. [2022-02-11 00:16:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68394 to 39026. [2022-02-11 00:16:18,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39026 states, 39025 states have (on average 4.450608584240872) internal successors, (173685), 39025 states have internal predecessors, (173685), 0 states have call successors, (0), 0 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 00:16:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39026 states to 39026 states and 173685 transitions. [2022-02-11 00:16:19,147 INFO L78 Accepts]: Start accepts. Automaton has 39026 states and 173685 transitions. Word has length 29 [2022-02-11 00:16:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:19,147 INFO L470 AbstractCegarLoop]: Abstraction has 39026 states and 173685 transitions. [2022-02-11 00:16:19,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:16:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 39026 states and 173685 transitions. [2022-02-11 00:16:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:19,262 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:19,262 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:19,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:19,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:19,463 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:19,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -177947937, now seen corresponding path program 19 times [2022-02-11 00:16:19,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:19,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111817474] [2022-02-11 00:16:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:19,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:19,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111817474] [2022-02-11 00:16:19,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111817474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:19,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929027285] [2022-02-11 00:16:19,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:16:19,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:19,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:19,499 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:19,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-11 00:16:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:19,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:19,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:19,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:19,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929027285] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:19,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:19,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:16:19,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550852595] [2022-02-11 00:16:19,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:19,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:16:19,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:16:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:16:19,654 INFO L87 Difference]: Start difference. First operand 39026 states and 173685 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:16:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:20,714 INFO L93 Difference]: Finished difference Result 49591 states and 212155 transitions. [2022-02-11 00:16:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-11 00:16:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:20,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:20,958 INFO L225 Difference]: With dead ends: 49591 [2022-02-11 00:16:20,958 INFO L226 Difference]: Without dead ends: 49566 [2022-02-11 00:16:20,958 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:16:20,959 INFO L934 BasicCegarLoop]: 72 mSDtfsCounter, 173 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:20,959 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 409 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:16:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49566 states. [2022-02-11 00:16:22,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49566 to 39082. [2022-02-11 00:16:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39082 states, 39081 states have (on average 4.449553491466442) internal successors, (173893), 39081 states have internal predecessors, (173893), 0 states have call successors, (0), 0 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 00:16:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39082 states to 39082 states and 173893 transitions. [2022-02-11 00:16:22,561 INFO L78 Accepts]: Start accepts. Automaton has 39082 states and 173893 transitions. Word has length 29 [2022-02-11 00:16:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:22,561 INFO L470 AbstractCegarLoop]: Abstraction has 39082 states and 173893 transitions. [2022-02-11 00:16:22,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:16:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 39082 states and 173893 transitions. [2022-02-11 00:16:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:22,676 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:22,676 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:22,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-11 00:16:22,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-11 00:16:22,877 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1432006963, now seen corresponding path program 20 times [2022-02-11 00:16:22,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:22,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257059333] [2022-02-11 00:16:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:22,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:22,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:22,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257059333] [2022-02-11 00:16:22,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257059333] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:22,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698380424] [2022-02-11 00:16:22,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:16:22,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:22,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:22,907 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:22,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-11 00:16:22,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:16:22,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:22,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:22,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:23,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:16:23,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698380424] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:23,362 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:23,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-02-11 00:16:23,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314036587] [2022-02-11 00:16:23,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:23,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:16:23,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:16:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:16:23,363 INFO L87 Difference]: Start difference. First operand 39082 states and 173893 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:16:25,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:25,188 INFO L93 Difference]: Finished difference Result 122970 states and 525591 transitions. [2022-02-11 00:16:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-11 00:16:25,189 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:26,461 INFO L225 Difference]: With dead ends: 122970 [2022-02-11 00:16:26,462 INFO L226 Difference]: Without dead ends: 122970 [2022-02-11 00:16:26,462 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-02-11 00:16:26,462 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 495 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:26,462 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 258 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:16:26,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122970 states. [2022-02-11 00:16:28,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122970 to 51969. [2022-02-11 00:16:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51969 states, 51968 states have (on average 4.575142395320197) internal successors, (237761), 51968 states have internal predecessors, (237761), 0 states have call successors, (0), 0 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 00:16:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51969 states to 51969 states and 237761 transitions. [2022-02-11 00:16:29,562 INFO L78 Accepts]: Start accepts. Automaton has 51969 states and 237761 transitions. Word has length 29 [2022-02-11 00:16:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:29,562 INFO L470 AbstractCegarLoop]: Abstraction has 51969 states and 237761 transitions. [2022-02-11 00:16:29,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:16:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 51969 states and 237761 transitions. [2022-02-11 00:16:29,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:29,728 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:29,728 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:29,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:29,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:29,928 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:29,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1669970355, now seen corresponding path program 21 times [2022-02-11 00:16:29,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:29,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043221553] [2022-02-11 00:16:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:29,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:29,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:29,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043221553] [2022-02-11 00:16:29,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043221553] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:29,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372268705] [2022-02-11 00:16:29,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:16:29,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:29,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:29,957 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:29,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-11 00:16:29,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:16:29,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:29,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:29,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:30,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:16:30,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372268705] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:30,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:30,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-02-11 00:16:30,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995936946] [2022-02-11 00:16:30,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:30,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:16:30,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:30,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:16:30,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:16:30,133 INFO L87 Difference]: Start difference. First operand 51969 states and 237761 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 00:16:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:31,667 INFO L93 Difference]: Finished difference Result 83465 states and 358962 transitions. [2022-02-11 00:16:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 00:16:31,667 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 29 [2022-02-11 00:16:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:32,469 INFO L225 Difference]: With dead ends: 83465 [2022-02-11 00:16:32,469 INFO L226 Difference]: Without dead ends: 83417 [2022-02-11 00:16:32,469 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-02-11 00:16:32,469 INFO L934 BasicCegarLoop]: 78 mSDtfsCounter, 312 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:32,469 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 492 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:16:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83417 states. [2022-02-11 00:16:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83417 to 51969. [2022-02-11 00:16:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51969 states, 51968 states have (on average 4.574911483990148) internal successors, (237749), 51968 states have internal predecessors, (237749), 0 states have call successors, (0), 0 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 00:16:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51969 states to 51969 states and 237749 transitions. [2022-02-11 00:16:35,322 INFO L78 Accepts]: Start accepts. Automaton has 51969 states and 237749 transitions. Word has length 29 [2022-02-11 00:16:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:35,322 INFO L470 AbstractCegarLoop]: Abstraction has 51969 states and 237749 transitions. [2022-02-11 00:16:35,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 00:16:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 51969 states and 237749 transitions. [2022-02-11 00:16:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:35,511 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:35,511 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:35,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-11 00:16:35,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:35,712 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:35,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash 944500301, now seen corresponding path program 22 times [2022-02-11 00:16:35,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:35,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686735242] [2022-02-11 00:16:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:16:35,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:35,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686735242] [2022-02-11 00:16:35,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686735242] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:35,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517436433] [2022-02-11 00:16:35,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:16:35,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:35,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:35,755 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:35,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-11 00:16:35,782 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:16:35,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:35,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:35,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:35,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:16:35,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517436433] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:35,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:35,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-02-11 00:16:35,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858009366] [2022-02-11 00:16:35,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:35,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:16:35,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:16:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:16:35,959 INFO L87 Difference]: Start difference. First operand 51969 states and 237749 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 00:16:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:37,681 INFO L93 Difference]: Finished difference Result 99551 states and 429052 transitions. [2022-02-11 00:16:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:16:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 29 [2022-02-11 00:16:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:39,115 INFO L225 Difference]: With dead ends: 99551 [2022-02-11 00:16:39,116 INFO L226 Difference]: Without dead ends: 99551 [2022-02-11 00:16:39,116 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-02-11 00:16:39,116 INFO L934 BasicCegarLoop]: 65 mSDtfsCounter, 440 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:39,116 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 390 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:16:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99551 states. [2022-02-11 00:16:41,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99551 to 52207. [2022-02-11 00:16:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52207 states, 52206 states have (on average 4.573401524728959) internal successors, (238759), 52206 states have internal predecessors, (238759), 0 states have call successors, (0), 0 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 00:16:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52207 states to 52207 states and 238759 transitions. [2022-02-11 00:16:42,443 INFO L78 Accepts]: Start accepts. Automaton has 52207 states and 238759 transitions. Word has length 29 [2022-02-11 00:16:42,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:42,443 INFO L470 AbstractCegarLoop]: Abstraction has 52207 states and 238759 transitions. [2022-02-11 00:16:42,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 00:16:42,443 INFO L276 IsEmpty]: Start isEmpty. Operand 52207 states and 238759 transitions. [2022-02-11 00:16:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:42,621 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:42,621 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:42,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:42,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-02-11 00:16:42,822 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1933966981, now seen corresponding path program 23 times [2022-02-11 00:16:42,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:42,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303037936] [2022-02-11 00:16:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:42,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:16:42,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:42,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303037936] [2022-02-11 00:16:42,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303037936] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:42,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49521533] [2022-02-11 00:16:42,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:16:42,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:42,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:42,854 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:42,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-11 00:16:42,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 00:16:42,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:42,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:42,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:42,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:16:43,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49521533] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:43,056 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:43,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-02-11 00:16:43,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905688232] [2022-02-11 00:16:43,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:43,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:16:43,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:16:43,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:16:43,058 INFO L87 Difference]: Start difference. First operand 52207 states and 238759 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:16:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:44,675 INFO L93 Difference]: Finished difference Result 93968 states and 402691 transitions. [2022-02-11 00:16:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-11 00:16:44,676 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:44,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:45,603 INFO L225 Difference]: With dead ends: 93968 [2022-02-11 00:16:45,603 INFO L226 Difference]: Without dead ends: 93918 [2022-02-11 00:16:45,603 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:16:45,603 INFO L934 BasicCegarLoop]: 56 mSDtfsCounter, 414 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:45,603 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 319 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:16:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93918 states. [2022-02-11 00:16:47,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93918 to 52209. [2022-02-11 00:16:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52209 states, 52208 states have (on average 4.573207171314741) internal successors, (238758), 52208 states have internal predecessors, (238758), 0 states have call successors, (0), 0 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 00:16:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52209 states to 52209 states and 238758 transitions. [2022-02-11 00:16:48,548 INFO L78 Accepts]: Start accepts. Automaton has 52209 states and 238758 transitions. Word has length 29 [2022-02-11 00:16:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:48,548 INFO L470 AbstractCegarLoop]: Abstraction has 52209 states and 238758 transitions. [2022-02-11 00:16:48,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:16:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 52209 states and 238758 transitions. [2022-02-11 00:16:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:48,737 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:48,737 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:48,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:48,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:48,938 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:48,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash 70245641, now seen corresponding path program 24 times [2022-02-11 00:16:48,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:48,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130527254] [2022-02-11 00:16:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:48,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:48,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:48,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130527254] [2022-02-11 00:16:48,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130527254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:48,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068605815] [2022-02-11 00:16:48,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:16:48,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:48,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:48,989 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:48,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-11 00:16:49,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 00:16:49,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:49,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:49,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:49,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:49,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068605815] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:49,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:49,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-02-11 00:16:49,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303827938] [2022-02-11 00:16:49,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:49,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:16:49,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:16:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:16:49,398 INFO L87 Difference]: Start difference. First operand 52209 states and 238758 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 00:16:51,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:51,282 INFO L93 Difference]: Finished difference Result 86954 states and 378394 transitions. [2022-02-11 00:16:51,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 00:16:51,282 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 29 [2022-02-11 00:16:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:52,210 INFO L225 Difference]: With dead ends: 86954 [2022-02-11 00:16:52,210 INFO L226 Difference]: Without dead ends: 86954 [2022-02-11 00:16:52,210 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:16:52,210 INFO L934 BasicCegarLoop]: 59 mSDtfsCounter, 416 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:52,210 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 419 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:16:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86954 states. [2022-02-11 00:16:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86954 to 49798. [2022-02-11 00:16:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49798 states, 49797 states have (on average 4.546077072916039) internal successors, (226381), 49797 states have internal predecessors, (226381), 0 states have call successors, (0), 0 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 00:16:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49798 states to 49798 states and 226381 transitions. [2022-02-11 00:16:55,324 INFO L78 Accepts]: Start accepts. Automaton has 49798 states and 226381 transitions. Word has length 29 [2022-02-11 00:16:55,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:55,324 INFO L470 AbstractCegarLoop]: Abstraction has 49798 states and 226381 transitions. [2022-02-11 00:16:55,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 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 00:16:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 49798 states and 226381 transitions. [2022-02-11 00:16:55,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:16:55,932 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:55,933 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:55,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:56,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-02-11 00:16:56,136 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:16:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 936509879, now seen corresponding path program 25 times [2022-02-11 00:16:56,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:56,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32259044] [2022-02-11 00:16:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:56,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:56,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:56,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32259044] [2022-02-11 00:16:56,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32259044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:56,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654299018] [2022-02-11 00:16:56,168 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:16:56,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:56,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:56,169 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:56,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-11 00:16:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:56,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:16:56,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:56,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:56,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654299018] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:56,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:56,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-02-11 00:16:56,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986186489] [2022-02-11 00:16:56,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:56,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:16:56,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:16:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:16:56,333 INFO L87 Difference]: Start difference. First operand 49798 states and 226381 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:16:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:57,796 INFO L93 Difference]: Finished difference Result 80496 states and 344078 transitions. [2022-02-11 00:16:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 00:16:57,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 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 29 [2022-02-11 00:16:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:58,258 INFO L225 Difference]: With dead ends: 80496 [2022-02-11 00:16:58,258 INFO L226 Difference]: Without dead ends: 80421 [2022-02-11 00:16:58,259 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:16:58,259 INFO L934 BasicCegarLoop]: 50 mSDtfsCounter, 376 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:58,259 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 379 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:16:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80421 states. [2022-02-11 00:17:00,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80421 to 50365. [2022-02-11 00:17:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50365 states, 50364 states have (on average 4.546441902946549) internal successors, (228977), 50364 states have internal predecessors, (228977), 0 states have call successors, (0), 0 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 00:17:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50365 states to 50365 states and 228977 transitions. [2022-02-11 00:17:00,810 INFO L78 Accepts]: Start accepts. Automaton has 50365 states and 228977 transitions. Word has length 29 [2022-02-11 00:17:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:00,810 INFO L470 AbstractCegarLoop]: Abstraction has 50365 states and 228977 transitions. [2022-02-11 00:17:00,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:17:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 50365 states and 228977 transitions. [2022-02-11 00:17:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:00,961 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:00,961 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:00,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:01,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-02-11 00:17:01,162 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:01,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash -468416107, now seen corresponding path program 26 times [2022-02-11 00:17:01,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:01,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993552285] [2022-02-11 00:17:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:01,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:01,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:01,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993552285] [2022-02-11 00:17:01,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993552285] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:01,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244601546] [2022-02-11 00:17:01,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:01,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:01,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:01,199 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:01,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-11 00:17:01,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:01,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:01,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:01,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:01,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:01,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244601546] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:01,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:01,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-02-11 00:17:01,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320790489] [2022-02-11 00:17:01,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:01,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:17:01,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:17:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:17:01,372 INFO L87 Difference]: Start difference. First operand 50365 states and 228977 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 00:17:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:03,360 INFO L93 Difference]: Finished difference Result 99418 states and 427978 transitions. [2022-02-11 00:17:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 00:17:03,360 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:04,037 INFO L225 Difference]: With dead ends: 99418 [2022-02-11 00:17:04,038 INFO L226 Difference]: Without dead ends: 99418 [2022-02-11 00:17:04,038 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:17:04,038 INFO L934 BasicCegarLoop]: 53 mSDtfsCounter, 415 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:04,038 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 348 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:17:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99418 states. [2022-02-11 00:17:06,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99418 to 48495. [2022-02-11 00:17:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48495 states, 48494 states have (on average 4.518827071390275) internal successors, (219136), 48494 states have internal predecessors, (219136), 0 states have call successors, (0), 0 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 00:17:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48495 states to 48495 states and 219136 transitions. [2022-02-11 00:17:07,008 INFO L78 Accepts]: Start accepts. Automaton has 48495 states and 219136 transitions. Word has length 29 [2022-02-11 00:17:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:07,008 INFO L470 AbstractCegarLoop]: Abstraction has 48495 states and 219136 transitions. [2022-02-11 00:17:07,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 00:17:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 48495 states and 219136 transitions. [2022-02-11 00:17:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:07,201 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:07,201 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:07,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:07,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:07,419 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1517969131, now seen corresponding path program 27 times [2022-02-11 00:17:07,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:07,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145153757] [2022-02-11 00:17:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:07,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:07,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:07,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145153757] [2022-02-11 00:17:07,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145153757] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:07,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902585505] [2022-02-11 00:17:07,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:07,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:07,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:07,459 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:07,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-11 00:17:07,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:17:07,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:07,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:07,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:07,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:07,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902585505] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:07,662 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:07,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-02-11 00:17:07,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533151961] [2022-02-11 00:17:07,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:07,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:17:07,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:17:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:17:07,664 INFO L87 Difference]: Start difference. First operand 48495 states and 219136 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:17:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:09,332 INFO L93 Difference]: Finished difference Result 69880 states and 298246 transitions. [2022-02-11 00:17:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 00:17:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:09,825 INFO L225 Difference]: With dead ends: 69880 [2022-02-11 00:17:09,826 INFO L226 Difference]: Without dead ends: 69808 [2022-02-11 00:17:09,826 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:17:09,826 INFO L934 BasicCegarLoop]: 50 mSDtfsCounter, 389 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:09,827 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 348 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:17:10,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69808 states. [2022-02-11 00:17:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69808 to 47135. [2022-02-11 00:17:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47135 states, 47134 states have (on average 4.529511605210676) internal successors, (213494), 47134 states have internal predecessors, (213494), 0 states have call successors, (0), 0 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 00:17:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47135 states to 47135 states and 213494 transitions. [2022-02-11 00:17:12,366 INFO L78 Accepts]: Start accepts. Automaton has 47135 states and 213494 transitions. Word has length 29 [2022-02-11 00:17:12,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:12,366 INFO L470 AbstractCegarLoop]: Abstraction has 47135 states and 213494 transitions. [2022-02-11 00:17:12,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:17:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 47135 states and 213494 transitions. [2022-02-11 00:17:12,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:12,514 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:12,514 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:12,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-11 00:17:12,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:12,715 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:12,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:12,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1260692049, now seen corresponding path program 28 times [2022-02-11 00:17:12,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:12,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321428607] [2022-02-11 00:17:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:12,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:12,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:12,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321428607] [2022-02-11 00:17:12,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321428607] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:12,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289045996] [2022-02-11 00:17:12,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:12,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:12,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:12,748 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:12,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-11 00:17:12,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:12,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:12,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:12,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:12,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:12,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289045996] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:12,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:12,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:17:12,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179642475] [2022-02-11 00:17:12,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:12,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:12,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:12,913 INFO L87 Difference]: Start difference. First operand 47135 states and 213494 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:14,809 INFO L93 Difference]: Finished difference Result 89708 states and 381495 transitions. [2022-02-11 00:17:14,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:17:14,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-02-11 00:17:14,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:15,741 INFO L225 Difference]: With dead ends: 89708 [2022-02-11 00:17:15,741 INFO L226 Difference]: Without dead ends: 89708 [2022-02-11 00:17:15,741 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:17:15,742 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 444 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:15,742 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 238 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:17:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89708 states. [2022-02-11 00:17:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89708 to 50510. [2022-02-11 00:17:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50510 states, 50509 states have (on average 4.561880060979232) internal successors, (230416), 50509 states have internal predecessors, (230416), 0 states have call successors, (0), 0 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 00:17:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50510 states to 50510 states and 230416 transitions. [2022-02-11 00:17:18,629 INFO L78 Accepts]: Start accepts. Automaton has 50510 states and 230416 transitions. Word has length 29 [2022-02-11 00:17:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:18,629 INFO L470 AbstractCegarLoop]: Abstraction has 50510 states and 230416 transitions. [2022-02-11 00:17:18,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 50510 states and 230416 transitions. [2022-02-11 00:17:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:18,826 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:18,826 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:18,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:19,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-11 00:17:19,027 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1022728657, now seen corresponding path program 29 times [2022-02-11 00:17:19,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:19,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091624225] [2022-02-11 00:17:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:19,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:19,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:19,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091624225] [2022-02-11 00:17:19,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091624225] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:19,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833330049] [2022-02-11 00:17:19,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:17:19,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:19,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:19,057 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:19,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-11 00:17:19,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:17:19,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:19,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:19,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:19,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:19,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833330049] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:19,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:19,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:17:19,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876757103] [2022-02-11 00:17:19,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:19,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:19,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:19,215 INFO L87 Difference]: Start difference. First operand 50510 states and 230416 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:17:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:20,734 INFO L93 Difference]: Finished difference Result 67513 states and 293577 transitions. [2022-02-11 00:17:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-11 00:17:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:21,489 INFO L225 Difference]: With dead ends: 67513 [2022-02-11 00:17:21,489 INFO L226 Difference]: Without dead ends: 67489 [2022-02-11 00:17:21,489 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-02-11 00:17:21,490 INFO L934 BasicCegarLoop]: 79 mSDtfsCounter, 223 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:21,490 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 380 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:17:21,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67489 states. [2022-02-11 00:17:23,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67489 to 50508. [2022-02-11 00:17:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50508 states, 50507 states have (on average 4.561565723563071) internal successors, (230391), 50507 states have internal predecessors, (230391), 0 states have call successors, (0), 0 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 00:17:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50508 states to 50508 states and 230391 transitions. [2022-02-11 00:17:23,530 INFO L78 Accepts]: Start accepts. Automaton has 50508 states and 230391 transitions. Word has length 29 [2022-02-11 00:17:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:23,530 INFO L470 AbstractCegarLoop]: Abstraction has 50508 states and 230391 transitions. [2022-02-11 00:17:23,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:17:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 50508 states and 230391 transitions. [2022-02-11 00:17:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:24,041 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:24,041 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:24,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:24,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-11 00:17:24,255 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash -657767983, now seen corresponding path program 30 times [2022-02-11 00:17:24,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:24,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669871187] [2022-02-11 00:17:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:24,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:24,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669871187] [2022-02-11 00:17:24,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669871187] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:24,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372146879] [2022-02-11 00:17:24,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:17:24,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:24,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:24,293 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:24,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-11 00:17:24,318 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:17:24,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:24,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:24,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:24,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:24,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372146879] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:24,449 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:24,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:17:24,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27964757] [2022-02-11 00:17:24,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:24,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:24,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:24,450 INFO L87 Difference]: Start difference. First operand 50508 states and 230391 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:17:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:25,986 INFO L93 Difference]: Finished difference Result 77373 states and 335751 transitions. [2022-02-11 00:17:25,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:17:25,987 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:26,426 INFO L225 Difference]: With dead ends: 77373 [2022-02-11 00:17:26,427 INFO L226 Difference]: Without dead ends: 77373 [2022-02-11 00:17:26,427 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-02-11 00:17:26,427 INFO L934 BasicCegarLoop]: 75 mSDtfsCounter, 280 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:26,427 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 431 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:17:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77373 states. [2022-02-11 00:17:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77373 to 50746. [2022-02-11 00:17:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50746 states, 50745 states have (on average 4.560074884225047) internal successors, (231401), 50745 states have internal predecessors, (231401), 0 states have call successors, (0), 0 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 00:17:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50746 states to 50746 states and 231401 transitions. [2022-02-11 00:17:29,068 INFO L78 Accepts]: Start accepts. Automaton has 50746 states and 231401 transitions. Word has length 29 [2022-02-11 00:17:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:29,068 INFO L470 AbstractCegarLoop]: Abstraction has 50746 states and 231401 transitions. [2022-02-11 00:17:29,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:17:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 50746 states and 231401 transitions. [2022-02-11 00:17:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:29,249 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:29,249 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:29,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-11 00:17:29,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:29,450 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash 331698697, now seen corresponding path program 31 times [2022-02-11 00:17:29,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:29,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082878287] [2022-02-11 00:17:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:29,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:29,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082878287] [2022-02-11 00:17:29,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082878287] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:29,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607322649] [2022-02-11 00:17:29,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:17:29,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:29,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:29,500 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:29,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-11 00:17:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:29,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:29,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:29,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:29,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607322649] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:29,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:29,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-02-11 00:17:29,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163691060] [2022-02-11 00:17:29,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:29,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:29,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:29,699 INFO L87 Difference]: Start difference. First operand 50746 states and 231401 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:17:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:31,186 INFO L93 Difference]: Finished difference Result 86093 states and 364091 transitions. [2022-02-11 00:17:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-11 00:17:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:32,030 INFO L225 Difference]: With dead ends: 86093 [2022-02-11 00:17:32,030 INFO L226 Difference]: Without dead ends: 86068 [2022-02-11 00:17:32,030 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-02-11 00:17:32,031 INFO L934 BasicCegarLoop]: 52 mSDtfsCounter, 453 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:32,031 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 285 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:17:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86068 states. [2022-02-11 00:17:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86068 to 50746. [2022-02-11 00:17:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50746 states, 50745 states have (on average 4.559838407724899) internal successors, (231389), 50745 states have internal predecessors, (231389), 0 states have call successors, (0), 0 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 00:17:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50746 states to 50746 states and 231389 transitions. [2022-02-11 00:17:34,545 INFO L78 Accepts]: Start accepts. Automaton has 50746 states and 231389 transitions. Word has length 29 [2022-02-11 00:17:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:34,545 INFO L470 AbstractCegarLoop]: Abstraction has 50746 states and 231389 transitions. [2022-02-11 00:17:34,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:17:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 50746 states and 231389 transitions. [2022-02-11 00:17:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:34,768 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:34,769 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:34,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:34,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:34,996 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:34,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1532022643, now seen corresponding path program 32 times [2022-02-11 00:17:34,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:34,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798981758] [2022-02-11 00:17:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:34,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:35,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:35,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798981758] [2022-02-11 00:17:35,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798981758] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:35,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767728550] [2022-02-11 00:17:35,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:35,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:35,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:35,528 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:35,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-11 00:17:35,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:35,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:35,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:35,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:35,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:35,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767728550] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:35,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:35,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-11 00:17:35,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816693044] [2022-02-11 00:17:35,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:35,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:35,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:35,715 INFO L87 Difference]: Start difference. First operand 50746 states and 231389 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:17:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:37,993 INFO L93 Difference]: Finished difference Result 110373 states and 481503 transitions. [2022-02-11 00:17:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-11 00:17:37,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:39,270 INFO L225 Difference]: With dead ends: 110373 [2022-02-11 00:17:39,270 INFO L226 Difference]: Without dead ends: 110373 [2022-02-11 00:17:39,271 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=565, Invalid=2191, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 00:17:39,271 INFO L934 BasicCegarLoop]: 81 mSDtfsCounter, 478 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:39,271 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 577 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:17:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110373 states. [2022-02-11 00:17:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110373 to 51698. [2022-02-11 00:17:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51698 states, 51697 states have (on average 4.5540166740816685) internal successors, (235429), 51697 states have internal predecessors, (235429), 0 states have call successors, (0), 0 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 00:17:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51698 states to 51698 states and 235429 transitions. [2022-02-11 00:17:42,820 INFO L78 Accepts]: Start accepts. Automaton has 51698 states and 235429 transitions. Word has length 29 [2022-02-11 00:17:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:42,820 INFO L470 AbstractCegarLoop]: Abstraction has 51698 states and 235429 transitions. [2022-02-11 00:17:42,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:17:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 51698 states and 235429 transitions. [2022-02-11 00:17:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:43,007 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:43,007 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:43,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:43,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-02-11 00:17:43,208 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash -665758405, now seen corresponding path program 33 times [2022-02-11 00:17:43,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:43,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972155892] [2022-02-11 00:17:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:43,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:43,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:43,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972155892] [2022-02-11 00:17:43,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972155892] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:43,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703997012] [2022-02-11 00:17:43,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:43,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:43,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:43,238 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:43,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-11 00:17:43,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:17:43,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:43,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:43,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:43,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:43,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703997012] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:43,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:43,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-02-11 00:17:43,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030725377] [2022-02-11 00:17:43,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:43,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:43,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:43,397 INFO L87 Difference]: Start difference. First operand 51698 states and 235429 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:17:45,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:45,236 INFO L93 Difference]: Finished difference Result 100748 states and 423395 transitions. [2022-02-11 00:17:45,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 00:17:45,236 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:45,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:46,394 INFO L225 Difference]: With dead ends: 100748 [2022-02-11 00:17:46,394 INFO L226 Difference]: Without dead ends: 100498 [2022-02-11 00:17:46,394 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2022-02-11 00:17:46,395 INFO L934 BasicCegarLoop]: 60 mSDtfsCounter, 435 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:46,395 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 414 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:17:46,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100498 states. [2022-02-11 00:17:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100498 to 51700. [2022-02-11 00:17:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51700 states, 51699 states have (on average 4.553163504129674) internal successors, (235394), 51699 states have internal predecessors, (235394), 0 states have call successors, (0), 0 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 00:17:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51700 states to 51700 states and 235394 transitions. [2022-02-11 00:17:49,166 INFO L78 Accepts]: Start accepts. Automaton has 51700 states and 235394 transitions. Word has length 29 [2022-02-11 00:17:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:49,166 INFO L470 AbstractCegarLoop]: Abstraction has 51700 states and 235394 transitions. [2022-02-11 00:17:49,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:17:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 51700 states and 235394 transitions. [2022-02-11 00:17:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:49,318 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:49,318 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:49,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:49,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:49,519 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:49,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1816433037, now seen corresponding path program 34 times [2022-02-11 00:17:49,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:49,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855721449] [2022-02-11 00:17:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:49,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:49,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:49,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855721449] [2022-02-11 00:17:49,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855721449] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:49,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452763668] [2022-02-11 00:17:49,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:49,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:49,559 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:49,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-11 00:17:49,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:49,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:49,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:49,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:49,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:49,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452763668] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:49,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:49,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-11 00:17:49,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623386746] [2022-02-11 00:17:49,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:49,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:49,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:49,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:49,751 INFO L87 Difference]: Start difference. First operand 51700 states and 235394 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:17:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:52,078 INFO L93 Difference]: Finished difference Result 96462 states and 425424 transitions. [2022-02-11 00:17:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 00:17:52,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:52,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:52,677 INFO L225 Difference]: With dead ends: 96462 [2022-02-11 00:17:52,677 INFO L226 Difference]: Without dead ends: 96437 [2022-02-11 00:17:52,677 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 00:17:52,678 INFO L934 BasicCegarLoop]: 128 mSDtfsCounter, 248 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:52,678 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 654 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:17:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96437 states. [2022-02-11 00:17:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96437 to 53421. [2022-02-11 00:17:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53421 states, 53420 states have (on average 4.527517783601647) internal successors, (241860), 53420 states have internal predecessors, (241860), 0 states have call successors, (0), 0 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 00:17:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53421 states to 53421 states and 241860 transitions. [2022-02-11 00:17:55,297 INFO L78 Accepts]: Start accepts. Automaton has 53421 states and 241860 transitions. Word has length 29 [2022-02-11 00:17:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:55,297 INFO L470 AbstractCegarLoop]: Abstraction has 53421 states and 241860 transitions. [2022-02-11 00:17:55,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:17:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 53421 states and 241860 transitions. [2022-02-11 00:17:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:17:55,446 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:55,446 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:55,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:55,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:55,647 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:17:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash 303066167, now seen corresponding path program 35 times [2022-02-11 00:17:55,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:55,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655417822] [2022-02-11 00:17:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:55,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:55,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:55,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655417822] [2022-02-11 00:17:55,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655417822] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:55,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613667227] [2022-02-11 00:17:55,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:17:55,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:55,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:55,687 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:55,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-11 00:17:55,716 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:17:55,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:55,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:17:55,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:55,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:55,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613667227] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:55,843 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:55,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-02-11 00:17:55,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768091709] [2022-02-11 00:17:55,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:55,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:55,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:55,844 INFO L87 Difference]: Start difference. First operand 53421 states and 241860 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:17:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:57,160 INFO L93 Difference]: Finished difference Result 84563 states and 356651 transitions. [2022-02-11 00:17:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 00:17:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2022-02-11 00:17:57,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:57,841 INFO L225 Difference]: With dead ends: 84563 [2022-02-11 00:17:57,841 INFO L226 Difference]: Without dead ends: 84422 [2022-02-11 00:17:57,841 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:17:57,841 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 480 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:57,842 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 292 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:17:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84422 states. [2022-02-11 00:17:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84422 to 54317. [2022-02-11 00:17:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54317 states, 54316 states have (on average 4.513716032108403) internal successors, (245167), 54316 states have internal predecessors, (245167), 0 states have call successors, (0), 0 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 00:18:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54317 states to 54317 states and 245167 transitions. [2022-02-11 00:18:00,462 INFO L78 Accepts]: Start accepts. Automaton has 54317 states and 245167 transitions. Word has length 29 [2022-02-11 00:18:00,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:00,463 INFO L470 AbstractCegarLoop]: Abstraction has 54317 states and 245167 transitions. [2022-02-11 00:18:00,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:18:00,463 INFO L276 IsEmpty]: Start isEmpty. Operand 54317 states and 245167 transitions. [2022-02-11 00:18:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:00,719 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:00,720 INFO L515 BasicCegarLoop]: trace histogram [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 00:18:00,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:00,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:00,944 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash 971511529, now seen corresponding path program 36 times [2022-02-11 00:18:00,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:00,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389972293] [2022-02-11 00:18:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:18:01,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:01,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389972293] [2022-02-11 00:18:01,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389972293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:01,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669708197] [2022-02-11 00:18:01,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:18:01,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:01,052 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:01,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-11 00:18:01,081 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:18:01,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:01,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:01,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:18:01,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:18:01,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669708197] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:01,668 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:01,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-02-11 00:18:01,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694494938] [2022-02-11 00:18:01,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:01,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:18:01,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:01,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:18:01,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:18:01,669 INFO L87 Difference]: Start difference. First operand 54317 states and 245167 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:18:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:02,847 INFO L93 Difference]: Finished difference Result 56833 states and 254304 transitions. [2022-02-11 00:18:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:18:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:18:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:03,125 INFO L225 Difference]: With dead ends: 56833 [2022-02-11 00:18:03,125 INFO L226 Difference]: Without dead ends: 56765 [2022-02-11 00:18:03,126 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:18:03,126 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:03,126 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 178 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:18:03,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56765 states. [2022-02-11 00:18:04,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56765 to 55387. [2022-02-11 00:18:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55387 states, 55386 states have (on average 4.503304084064565) internal successors, (249420), 55386 states have internal predecessors, (249420), 0 states have call successors, (0), 0 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 00:18:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55387 states to 55387 states and 249420 transitions. [2022-02-11 00:18:05,229 INFO L78 Accepts]: Start accepts. Automaton has 55387 states and 249420 transitions. Word has length 31 [2022-02-11 00:18:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:05,229 INFO L470 AbstractCegarLoop]: Abstraction has 55387 states and 249420 transitions. [2022-02-11 00:18:05,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:18:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand 55387 states and 249420 transitions. [2022-02-11 00:18:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:05,411 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:05,411 INFO L515 BasicCegarLoop]: trace histogram [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 00:18:05,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:05,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-02-11 00:18:05,612 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1033676257, now seen corresponding path program 37 times [2022-02-11 00:18:05,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:05,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922697877] [2022-02-11 00:18:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:05,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:18:05,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:05,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922697877] [2022-02-11 00:18:05,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922697877] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:05,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426313025] [2022-02-11 00:18:05,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:18:05,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:05,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:05,689 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:05,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-11 00:18:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:05,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:05,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:18:06,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:18:06,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426313025] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:06,271 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:06,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-02-11 00:18:06,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849793323] [2022-02-11 00:18:06,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:06,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:18:06,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:06,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:18:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:18:06,272 INFO L87 Difference]: Start difference. First operand 55387 states and 249420 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:07,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:07,429 INFO L93 Difference]: Finished difference Result 57655 states and 257614 transitions. [2022-02-11 00:18:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:18:07,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:18:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:07,698 INFO L225 Difference]: With dead ends: 57655 [2022-02-11 00:18:07,698 INFO L226 Difference]: Without dead ends: 57519 [2022-02-11 00:18:07,698 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:18:07,699 INFO L934 BasicCegarLoop]: 36 mSDtfsCounter, 119 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:07,699 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 205 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:18:07,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57519 states. [2022-02-11 00:18:09,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57519 to 55763. [2022-02-11 00:18:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55763 states, 55762 states have (on average 4.50256447042789) internal successors, (251072), 55762 states have internal predecessors, (251072), 0 states have call successors, (0), 0 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 00:18:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55763 states to 55763 states and 251072 transitions. [2022-02-11 00:18:09,740 INFO L78 Accepts]: Start accepts. Automaton has 55763 states and 251072 transitions. Word has length 31 [2022-02-11 00:18:09,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:09,740 INFO L470 AbstractCegarLoop]: Abstraction has 55763 states and 251072 transitions. [2022-02-11 00:18:09,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 55763 states and 251072 transitions. [2022-02-11 00:18:09,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:09,902 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:09,902 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:09,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:10,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-02-11 00:18:10,103 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:10,103 INFO L85 PathProgramCache]: Analyzing trace with hash 351590437, now seen corresponding path program 10 times [2022-02-11 00:18:10,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:10,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856618504] [2022-02-11 00:18:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:10,210 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 00:18:10,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:10,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856618504] [2022-02-11 00:18:10,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856618504] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:10,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398626552] [2022-02-11 00:18:10,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:18:10,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:10,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:10,212 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:10,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-11 00:18:10,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:18:10,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:10,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:10,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:10,650 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 00:18:10,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:10,822 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 00:18:10,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398626552] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:10,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:10,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-02-11 00:18:10,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615842488] [2022-02-11 00:18:10,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:10,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:18:10,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:10,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:18:10,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:10,823 INFO L87 Difference]: Start difference. First operand 55763 states and 251072 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:18:11,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:11,939 INFO L93 Difference]: Finished difference Result 57519 states and 257238 transitions. [2022-02-11 00:18:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:18:11,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:18:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:12,421 INFO L225 Difference]: With dead ends: 57519 [2022-02-11 00:18:12,421 INFO L226 Difference]: Without dead ends: 57055 [2022-02-11 00:18:12,421 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:12,421 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 83 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:12,421 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 217 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:18:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57055 states. [2022-02-11 00:18:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57055 to 56239. [2022-02-11 00:18:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56239 states, 56238 states have (on average 4.491767132543831) internal successors, (252608), 56238 states have internal predecessors, (252608), 0 states have call successors, (0), 0 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 00:18:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56239 states to 56239 states and 252608 transitions. [2022-02-11 00:18:14,148 INFO L78 Accepts]: Start accepts. Automaton has 56239 states and 252608 transitions. Word has length 31 [2022-02-11 00:18:14,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:14,148 INFO L470 AbstractCegarLoop]: Abstraction has 56239 states and 252608 transitions. [2022-02-11 00:18:14,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:18:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 56239 states and 252608 transitions. [2022-02-11 00:18:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:14,294 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:14,294 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:14,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:14,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-11 00:18:14,494 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:14,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:14,495 INFO L85 PathProgramCache]: Analyzing trace with hash 948873901, now seen corresponding path program 11 times [2022-02-11 00:18:14,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:14,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377517810] [2022-02-11 00:18:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:14,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:14,563 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 00:18:14,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:14,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377517810] [2022-02-11 00:18:14,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377517810] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:14,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533278042] [2022-02-11 00:18:14,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:18:14,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:14,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:14,564 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:14,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-11 00:18:14,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:18:14,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:14,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:14,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:15,206 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 00:18:15,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:15,354 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 00:18:15,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533278042] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:15,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:15,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-02-11 00:18:15,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104327009] [2022-02-11 00:18:15,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:15,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:18:15,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:15,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:18:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:18:15,356 INFO L87 Difference]: Start difference. First operand 56239 states and 252608 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:16,088 INFO L93 Difference]: Finished difference Result 57673 states and 257758 transitions. [2022-02-11 00:18:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:18:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:18:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:16,593 INFO L225 Difference]: With dead ends: 57673 [2022-02-11 00:18:16,593 INFO L226 Difference]: Without dead ends: 57311 [2022-02-11 00:18:16,594 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:18:16,594 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 90 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:16,594 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 168 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:18:16,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57311 states. [2022-02-11 00:18:18,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57311 to 56439. [2022-02-11 00:18:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56439 states, 56438 states have (on average 4.494454091215139) internal successors, (253658), 56438 states have internal predecessors, (253658), 0 states have call successors, (0), 0 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 00:18:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56439 states to 56439 states and 253658 transitions. [2022-02-11 00:18:18,459 INFO L78 Accepts]: Start accepts. Automaton has 56439 states and 253658 transitions. Word has length 31 [2022-02-11 00:18:18,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:18,459 INFO L470 AbstractCegarLoop]: Abstraction has 56439 states and 253658 transitions. [2022-02-11 00:18:18,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 56439 states and 253658 transitions. [2022-02-11 00:18:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:18,606 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:18,606 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:18,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:18,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-11 00:18:18,806 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash -847330975, now seen corresponding path program 12 times [2022-02-11 00:18:18,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:18,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286468325] [2022-02-11 00:18:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:18,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:18,888 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 00:18:18,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:18,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286468325] [2022-02-11 00:18:18,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286468325] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:18,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076530476] [2022-02-11 00:18:18,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:18:18,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:18,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:18,890 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:18,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-11 00:18:18,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:18:18,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:18,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:18,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:19,641 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 00:18:19,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:19,819 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 00:18:19,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076530476] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:19,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:19,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-02-11 00:18:19,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662036465] [2022-02-11 00:18:19,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:19,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:18:19,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:18:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:18:19,822 INFO L87 Difference]: Start difference. First operand 56439 states and 253658 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:20,786 INFO L93 Difference]: Finished difference Result 58399 states and 261040 transitions. [2022-02-11 00:18:20,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:18:20,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:18:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:21,081 INFO L225 Difference]: With dead ends: 58399 [2022-02-11 00:18:21,082 INFO L226 Difference]: Without dead ends: 58007 [2022-02-11 00:18:21,082 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:18:21,082 INFO L934 BasicCegarLoop]: 27 mSDtfsCounter, 74 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:21,082 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 133 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:18:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58007 states. [2022-02-11 00:18:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58007 to 56971. [2022-02-11 00:18:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56971 states, 56970 states have (on average 4.493487800596806) internal successors, (255994), 56970 states have internal predecessors, (255994), 0 states have call successors, (0), 0 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 00:18:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56971 states to 56971 states and 255994 transitions. [2022-02-11 00:18:22,942 INFO L78 Accepts]: Start accepts. Automaton has 56971 states and 255994 transitions. Word has length 31 [2022-02-11 00:18:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:22,942 INFO L470 AbstractCegarLoop]: Abstraction has 56971 states and 255994 transitions. [2022-02-11 00:18:22,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand 56971 states and 255994 transitions. [2022-02-11 00:18:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:23,521 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:23,521 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:23,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:23,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:23,721 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash -642090763, now seen corresponding path program 13 times [2022-02-11 00:18:23,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:23,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744873899] [2022-02-11 00:18:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:23,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:23,815 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 00:18:23,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:23,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744873899] [2022-02-11 00:18:23,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744873899] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:23,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013410749] [2022-02-11 00:18:23,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:18:23,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:23,818 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:23,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-11 00:18:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:23,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:23,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:24,257 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 00:18:24,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:24,410 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 00:18:24,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013410749] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:24,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:24,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-02-11 00:18:24,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60950923] [2022-02-11 00:18:24,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:24,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:18:24,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:24,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:18:24,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:24,411 INFO L87 Difference]: Start difference. First operand 56971 states and 255994 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:25,592 INFO L93 Difference]: Finished difference Result 59527 states and 265352 transitions. [2022-02-11 00:18:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:18:25,593 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:18:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:25,907 INFO L225 Difference]: With dead ends: 59527 [2022-02-11 00:18:25,908 INFO L226 Difference]: Without dead ends: 58923 [2022-02-11 00:18:25,908 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:25,908 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 92 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:25,908 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 222 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:18:25,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58923 states. [2022-02-11 00:18:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58923 to 56299. [2022-02-11 00:18:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56299 states, 56298 states have (on average 4.497069167643611) internal successors, (253176), 56298 states have internal predecessors, (253176), 0 states have call successors, (0), 0 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 00:18:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56299 states to 56299 states and 253176 transitions. [2022-02-11 00:18:28,079 INFO L78 Accepts]: Start accepts. Automaton has 56299 states and 253176 transitions. Word has length 31 [2022-02-11 00:18:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:28,079 INFO L470 AbstractCegarLoop]: Abstraction has 56299 states and 253176 transitions. [2022-02-11 00:18:28,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 56299 states and 253176 transitions. [2022-02-11 00:18:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:28,272 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:28,272 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:28,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:28,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:28,473 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1723749211, now seen corresponding path program 14 times [2022-02-11 00:18:28,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:28,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302484340] [2022-02-11 00:18:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:28,563 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 00:18:28,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:28,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302484340] [2022-02-11 00:18:28,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302484340] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:28,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561159834] [2022-02-11 00:18:28,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:18:28,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:28,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:28,567 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:28,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-11 00:18:28,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:18:28,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:28,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:28,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:29,036 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 00:18:29,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:29,234 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 00:18:29,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561159834] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:29,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:29,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-02-11 00:18:29,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744308608] [2022-02-11 00:18:29,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:29,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:18:29,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:18:29,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:18:29,236 INFO L87 Difference]: Start difference. First operand 56299 states and 253176 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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 00:18:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:30,471 INFO L93 Difference]: Finished difference Result 57119 states and 256248 transitions. [2022-02-11 00:18:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:18:30,472 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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 31 [2022-02-11 00:18:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:30,947 INFO L225 Difference]: With dead ends: 57119 [2022-02-11 00:18:30,948 INFO L226 Difference]: Without dead ends: 56923 [2022-02-11 00:18:30,948 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 13 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:18:30,949 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 63 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:30,949 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 138 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:18:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56923 states. [2022-02-11 00:18:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56923 to 56637. [2022-02-11 00:18:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56637 states, 56636 states have (on average 4.496044918426443) internal successors, (254638), 56636 states have internal predecessors, (254638), 0 states have call successors, (0), 0 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 00:18:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56637 states to 56637 states and 254638 transitions. [2022-02-11 00:18:33,146 INFO L78 Accepts]: Start accepts. Automaton has 56637 states and 254638 transitions. Word has length 31 [2022-02-11 00:18:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:33,146 INFO L470 AbstractCegarLoop]: Abstraction has 56637 states and 254638 transitions. [2022-02-11 00:18:33,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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 00:18:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 56637 states and 254638 transitions. [2022-02-11 00:18:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:33,351 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:33,351 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:33,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:33,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:33,552 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2056401095, now seen corresponding path program 15 times [2022-02-11 00:18:33,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:33,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246832199] [2022-02-11 00:18:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:33,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:33,634 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 00:18:33,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:33,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246832199] [2022-02-11 00:18:33,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246832199] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:33,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90418555] [2022-02-11 00:18:33,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:18:33,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:33,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:33,635 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:33,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-11 00:18:33,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:18:33,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:33,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:33,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:34,001 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 00:18:34,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:34,151 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 00:18:34,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90418555] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:34,152 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:34,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 9 [2022-02-11 00:18:34,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522956898] [2022-02-11 00:18:34,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:34,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:18:34,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:18:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:18:34,153 INFO L87 Difference]: Start difference. First operand 56637 states and 254638 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 00:18:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:35,180 INFO L93 Difference]: Finished difference Result 58909 states and 263376 transitions. [2022-02-11 00:18:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:18:35,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 31 [2022-02-11 00:18:35,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:35,482 INFO L225 Difference]: With dead ends: 58909 [2022-02-11 00:18:35,482 INFO L226 Difference]: Without dead ends: 58565 [2022-02-11 00:18:35,482 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 12 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:18:35,483 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:35,483 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 153 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:18:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58565 states. [2022-02-11 00:18:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58565 to 57247. [2022-02-11 00:18:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57247 states, 57246 states have (on average 4.4951961709115045) internal successors, (257332), 57246 states have internal predecessors, (257332), 0 states have call successors, (0), 0 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 00:18:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57247 states to 57247 states and 257332 transitions. [2022-02-11 00:18:37,872 INFO L78 Accepts]: Start accepts. Automaton has 57247 states and 257332 transitions. Word has length 31 [2022-02-11 00:18:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:37,872 INFO L470 AbstractCegarLoop]: Abstraction has 57247 states and 257332 transitions. [2022-02-11 00:18:37,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 00:18:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 57247 states and 257332 transitions. [2022-02-11 00:18:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:38,060 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:38,060 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:38,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:38,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:38,261 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:38,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:38,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1754347509, now seen corresponding path program 16 times [2022-02-11 00:18:38,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:38,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548187562] [2022-02-11 00:18:38,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:38,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:38,358 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 00:18:38,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:38,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548187562] [2022-02-11 00:18:38,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548187562] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:38,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184161356] [2022-02-11 00:18:38,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:18:38,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:38,360 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:38,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-11 00:18:38,385 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:18:38,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:38,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:38,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:38,717 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 00:18:38,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:38,872 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 00:18:38,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184161356] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:38,873 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:38,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-02-11 00:18:38,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174056085] [2022-02-11 00:18:38,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:38,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:18:38,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:38,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:18:38,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:38,873 INFO L87 Difference]: Start difference. First operand 57247 states and 257332 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 00:18:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:40,027 INFO L93 Difference]: Finished difference Result 59115 states and 263810 transitions. [2022-02-11 00:18:40,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:18:40,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 31 [2022-02-11 00:18:40,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:40,290 INFO L225 Difference]: With dead ends: 59115 [2022-02-11 00:18:40,290 INFO L226 Difference]: Without dead ends: 58527 [2022-02-11 00:18:40,290 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:40,290 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 89 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:40,290 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 196 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:18:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58527 states. [2022-02-11 00:18:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58527 to 56075. [2022-02-11 00:18:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56075 states, 56074 states have (on average 4.494632093305275) internal successors, (252032), 56074 states have internal predecessors, (252032), 0 states have call successors, (0), 0 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 00:18:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56075 states to 56075 states and 252032 transitions. [2022-02-11 00:18:42,341 INFO L78 Accepts]: Start accepts. Automaton has 56075 states and 252032 transitions. Word has length 31 [2022-02-11 00:18:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:42,341 INFO L470 AbstractCegarLoop]: Abstraction has 56075 states and 252032 transitions. [2022-02-11 00:18:42,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 00:18:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 56075 states and 252032 transitions. [2022-02-11 00:18:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:42,487 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:42,488 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:42,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:42,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:42,688 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:42,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1119130149, now seen corresponding path program 17 times [2022-02-11 00:18:42,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:42,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742120382] [2022-02-11 00:18:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:42,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:42,769 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 00:18:42,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:42,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742120382] [2022-02-11 00:18:42,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742120382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:42,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883558793] [2022-02-11 00:18:42,769 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:18:42,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:42,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:42,770 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:42,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-11 00:18:42,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:18:42,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:42,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:42,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:43,514 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 00:18:43,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:43,682 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 00:18:43,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883558793] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:43,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:43,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-02-11 00:18:43,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517164419] [2022-02-11 00:18:43,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:43,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:18:43,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:18:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:43,686 INFO L87 Difference]: Start difference. First operand 56075 states and 252032 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:44,638 INFO L93 Difference]: Finished difference Result 58567 states and 261228 transitions. [2022-02-11 00:18:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:18:44,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:18:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:44,936 INFO L225 Difference]: With dead ends: 58567 [2022-02-11 00:18:44,936 INFO L226 Difference]: Without dead ends: 58151 [2022-02-11 00:18:44,936 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:44,936 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 77 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:44,937 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 177 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:18:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58151 states. [2022-02-11 00:18:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58151 to 56555. [2022-02-11 00:18:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56555 states, 56554 states have (on average 4.4922728719453975) internal successors, (254056), 56554 states have internal predecessors, (254056), 0 states have call successors, (0), 0 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 00:18:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56555 states to 56555 states and 254056 transitions. [2022-02-11 00:18:46,790 INFO L78 Accepts]: Start accepts. Automaton has 56555 states and 254056 transitions. Word has length 31 [2022-02-11 00:18:46,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:46,790 INFO L470 AbstractCegarLoop]: Abstraction has 56555 states and 254056 transitions. [2022-02-11 00:18:46,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56555 states and 254056 transitions. [2022-02-11 00:18:47,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:47,377 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:47,377 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:47,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:47,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-02-11 00:18:47,578 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:47,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash -970438819, now seen corresponding path program 18 times [2022-02-11 00:18:47,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:47,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273959302] [2022-02-11 00:18:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:47,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:47,687 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 00:18:47,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:47,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273959302] [2022-02-11 00:18:47,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273959302] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:47,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190594957] [2022-02-11 00:18:47,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:18:47,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:47,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:47,688 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:47,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-11 00:18:47,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 00:18:47,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:47,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:47,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:48,194 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 00:18:48,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:48,365 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 00:18:48,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190594957] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:48,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:48,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 11 [2022-02-11 00:18:48,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939409442] [2022-02-11 00:18:48,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:48,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:18:48,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:18:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:18:48,366 INFO L87 Difference]: Start difference. First operand 56555 states and 254056 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:49,436 INFO L93 Difference]: Finished difference Result 59058 states and 263018 transitions. [2022-02-11 00:18:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:18:49,437 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:18:49,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:49,695 INFO L225 Difference]: With dead ends: 59058 [2022-02-11 00:18:49,695 INFO L226 Difference]: Without dead ends: 58562 [2022-02-11 00:18:49,695 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:18:49,696 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 87 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:49,696 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 245 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:18:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58562 states. [2022-02-11 00:18:51,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58562 to 56518. [2022-02-11 00:18:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56518 states, 56517 states have (on average 4.484562167135552) internal successors, (253454), 56517 states have internal predecessors, (253454), 0 states have call successors, (0), 0 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 00:18:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56518 states to 56518 states and 253454 transitions. [2022-02-11 00:18:51,831 INFO L78 Accepts]: Start accepts. Automaton has 56518 states and 253454 transitions. Word has length 31 [2022-02-11 00:18:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:51,831 INFO L470 AbstractCegarLoop]: Abstraction has 56518 states and 253454 transitions. [2022-02-11 00:18:51,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:18:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 56518 states and 253454 transitions. [2022-02-11 00:18:52,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:52,011 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:52,011 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:52,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-11 00:18:52,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-02-11 00:18:52,212 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1172911963, now seen corresponding path program 19 times [2022-02-11 00:18:52,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:52,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095130422] [2022-02-11 00:18:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-11 00:18:52,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:52,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095130422] [2022-02-11 00:18:52,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095130422] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:52,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991350972] [2022-02-11 00:18:52,295 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:18:52,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:52,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:52,298 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:52,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-11 00:18:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:52,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:52,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:18:52,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-11 00:18:52,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991350972] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:52,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:52,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 10 [2022-02-11 00:18:52,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094611221] [2022-02-11 00:18:52,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:52,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:18:52,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:18:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:52,889 INFO L87 Difference]: Start difference. First operand 56518 states and 253454 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:18:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:54,256 INFO L93 Difference]: Finished difference Result 59706 states and 264868 transitions. [2022-02-11 00:18:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:18:54,256 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-02-11 00:18:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:54,547 INFO L225 Difference]: With dead ends: 59706 [2022-02-11 00:18:54,547 INFO L226 Difference]: Without dead ends: 59062 [2022-02-11 00:18:54,547 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:54,547 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 104 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:54,547 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 245 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:18:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59062 states. [2022-02-11 00:18:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59062 to 56790. [2022-02-11 00:18:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56790 states, 56789 states have (on average 4.4874183380584265) internal successors, (254836), 56789 states have internal predecessors, (254836), 0 states have call successors, (0), 0 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 00:18:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56790 states to 56790 states and 254836 transitions. [2022-02-11 00:18:56,965 INFO L78 Accepts]: Start accepts. Automaton has 56790 states and 254836 transitions. Word has length 31 [2022-02-11 00:18:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:18:56,965 INFO L470 AbstractCegarLoop]: Abstraction has 56790 states and 254836 transitions. [2022-02-11 00:18:56,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:18:56,965 INFO L276 IsEmpty]: Start isEmpty. Operand 56790 states and 254836 transitions. [2022-02-11 00:18:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:18:57,153 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:18:57,153 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:18:57,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-11 00:18:57,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:57,354 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:18:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:18:57,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1348270123, now seen corresponding path program 20 times [2022-02-11 00:18:57,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:18:57,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671403562] [2022-02-11 00:18:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:18:57,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:18:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:18:57,440 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 00:18:57,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:18:57,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671403562] [2022-02-11 00:18:57,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671403562] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:18:57,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018914931] [2022-02-11 00:18:57,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:18:57,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:18:57,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:18:57,442 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:18:57,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-11 00:18:57,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:18:57,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:18:57,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:18:57,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:18:57,921 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 00:18:57,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:18:58,073 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 00:18:58,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018914931] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:18:58,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:18:58,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 10 [2022-02-11 00:18:58,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527052484] [2022-02-11 00:18:58,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:18:58,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:18:58,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:18:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:18:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:58,075 INFO L87 Difference]: Start difference. First operand 56790 states and 254836 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:18:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:18:59,240 INFO L93 Difference]: Finished difference Result 58350 states and 260490 transitions. [2022-02-11 00:18:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:18:59,240 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-02-11 00:18:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:18:59,814 INFO L225 Difference]: With dead ends: 58350 [2022-02-11 00:18:59,814 INFO L226 Difference]: Without dead ends: 58038 [2022-02-11 00:18:59,814 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:18:59,814 INFO L934 BasicCegarLoop]: 31 mSDtfsCounter, 86 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:18:59,815 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 158 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:18:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58038 states. [2022-02-11 00:19:01,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58038 to 57176. [2022-02-11 00:19:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57176 states, 57175 states have (on average 4.48661128115435) internal successors, (256522), 57175 states have internal predecessors, (256522), 0 states have call successors, (0), 0 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 00:19:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57176 states to 57176 states and 256522 transitions. [2022-02-11 00:19:01,928 INFO L78 Accepts]: Start accepts. Automaton has 57176 states and 256522 transitions. Word has length 31 [2022-02-11 00:19:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:01,928 INFO L470 AbstractCegarLoop]: Abstraction has 57176 states and 256522 transitions. [2022-02-11 00:19:01,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:19:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 57176 states and 256522 transitions. [2022-02-11 00:19:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:02,115 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:02,115 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:02,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:02,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:02,316 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:02,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2013633551, now seen corresponding path program 21 times [2022-02-11 00:19:02,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:02,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003647239] [2022-02-11 00:19:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:02,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:02,406 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 00:19:02,406 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:02,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003647239] [2022-02-11 00:19:02,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003647239] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:02,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878563621] [2022-02-11 00:19:02,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:19:02,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:02,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:02,409 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:02,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-11 00:19:02,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 00:19:02,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:02,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:02,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:03,245 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 00:19:03,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:03,399 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 00:19:03,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878563621] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:03,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:03,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 11 [2022-02-11 00:19:03,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621849458] [2022-02-11 00:19:03,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:03,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:19:03,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:03,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:19:03,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:19:03,400 INFO L87 Difference]: Start difference. First operand 57176 states and 256522 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:19:04,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:04,606 INFO L93 Difference]: Finished difference Result 60248 states and 267546 transitions. [2022-02-11 00:19:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:19:04,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-02-11 00:19:04,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:05,200 INFO L225 Difference]: With dead ends: 60248 [2022-02-11 00:19:05,200 INFO L226 Difference]: Without dead ends: 59632 [2022-02-11 00:19:05,200 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 11 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:19:05,201 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 105 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:05,201 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 233 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:19:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59632 states. [2022-02-11 00:19:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59632 to 56602. [2022-02-11 00:19:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56602 states, 56601 states have (on average 4.489920672779633) internal successors, (254134), 56601 states have internal predecessors, (254134), 0 states have call successors, (0), 0 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 00:19:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56602 states to 56602 states and 254134 transitions. [2022-02-11 00:19:07,509 INFO L78 Accepts]: Start accepts. Automaton has 56602 states and 254134 transitions. Word has length 31 [2022-02-11 00:19:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:07,510 INFO L470 AbstractCegarLoop]: Abstraction has 56602 states and 254134 transitions. [2022-02-11 00:19:07,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:19:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 56602 states and 254134 transitions. [2022-02-11 00:19:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:07,692 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:07,692 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:07,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:07,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:07,893 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1818124897, now seen corresponding path program 22 times [2022-02-11 00:19:07,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:07,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624995932] [2022-02-11 00:19:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:07,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-11 00:19:07,967 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:07,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624995932] [2022-02-11 00:19:07,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624995932] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:07,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804267451] [2022-02-11 00:19:07,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:19:07,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:07,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:07,969 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:07,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-11 00:19:07,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:19:07,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:07,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:07,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:19:08,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-11 00:19:08,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804267451] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:08,529 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:08,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-02-11 00:19:08,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927580404] [2022-02-11 00:19:08,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:08,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:19:08,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:19:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:19:08,530 INFO L87 Difference]: Start difference. First operand 56602 states and 254134 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:19:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:09,502 INFO L93 Difference]: Finished difference Result 57870 states and 258758 transitions. [2022-02-11 00:19:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:19:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 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 00:19:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:09,780 INFO L225 Difference]: With dead ends: 57870 [2022-02-11 00:19:09,780 INFO L226 Difference]: Without dead ends: 57590 [2022-02-11 00:19:09,780 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 13 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:19:09,781 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 76 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:09,781 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 140 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:19:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57590 states. [2022-02-11 00:19:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57590 to 57018. [2022-02-11 00:19:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57018 states, 57017 states have (on average 4.488836662749706) internal successors, (255940), 57017 states have internal predecessors, (255940), 0 states have call successors, (0), 0 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 00:19:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57018 states to 57018 states and 255940 transitions. [2022-02-11 00:19:11,896 INFO L78 Accepts]: Start accepts. Automaton has 57018 states and 255940 transitions. Word has length 31 [2022-02-11 00:19:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:11,896 INFO L470 AbstractCegarLoop]: Abstraction has 57018 states and 255940 transitions. [2022-02-11 00:19:11,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:19:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 57018 states and 255940 transitions. [2022-02-11 00:19:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:12,065 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:12,065 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:12,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:12,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-02-11 00:19:12,265 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash 275400525, now seen corresponding path program 23 times [2022-02-11 00:19:12,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:12,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603465700] [2022-02-11 00:19:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:12,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:19:12,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:12,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603465700] [2022-02-11 00:19:12,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603465700] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:12,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950722346] [2022-02-11 00:19:12,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:19:12,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:12,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:12,361 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:12,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-11 00:19:12,388 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:19:12,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:12,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:12,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:12,887 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 00:19:12,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:19:13,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950722346] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:13,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:13,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-02-11 00:19:13,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438890670] [2022-02-11 00:19:13,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:13,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:19:13,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:19:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:13,029 INFO L87 Difference]: Start difference. First operand 57018 states and 255940 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:19:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:14,221 INFO L93 Difference]: Finished difference Result 59614 states and 265266 transitions. [2022-02-11 00:19:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:19:14,222 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 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 00:19:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:14,475 INFO L225 Difference]: With dead ends: 59614 [2022-02-11 00:19:14,475 INFO L226 Difference]: Without dead ends: 59022 [2022-02-11 00:19:14,475 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:14,476 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:14,704 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 213 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:19:14,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59022 states. [2022-02-11 00:19:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59022 to 56886. [2022-02-11 00:19:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56886 states, 56885 states have (on average 4.493416542146436) internal successors, (255608), 56885 states have internal predecessors, (255608), 0 states have call successors, (0), 0 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 00:19:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56886 states to 56886 states and 255608 transitions. [2022-02-11 00:19:16,681 INFO L78 Accepts]: Start accepts. Automaton has 56886 states and 255608 transitions. Word has length 31 [2022-02-11 00:19:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:16,682 INFO L470 AbstractCegarLoop]: Abstraction has 56886 states and 255608 transitions. [2022-02-11 00:19:16,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:19:16,682 INFO L276 IsEmpty]: Start isEmpty. Operand 56886 states and 255608 transitions. [2022-02-11 00:19:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:16,857 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:16,857 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:16,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:17,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-02-11 00:19:17,058 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:17,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1711494417, now seen corresponding path program 24 times [2022-02-11 00:19:17,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:17,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719230122] [2022-02-11 00:19:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:17,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:17,170 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 00:19:17,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:17,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719230122] [2022-02-11 00:19:17,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719230122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:17,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645722280] [2022-02-11 00:19:17,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:19:17,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:17,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:17,172 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:17,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-11 00:19:17,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:19:17,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:17,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:17,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:18,048 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 00:19:18,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:18,210 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 00:19:18,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645722280] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:18,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:18,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 11 [2022-02-11 00:19:18,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426005699] [2022-02-11 00:19:18,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:18,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:19:18,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:19:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:19:18,212 INFO L87 Difference]: Start difference. First operand 56886 states and 255608 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:19:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:19,420 INFO L93 Difference]: Finished difference Result 59402 states and 264498 transitions. [2022-02-11 00:19:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:19:19,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 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 00:19:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:19,769 INFO L225 Difference]: With dead ends: 59402 [2022-02-11 00:19:19,770 INFO L226 Difference]: Without dead ends: 58902 [2022-02-11 00:19:19,770 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:19:19,770 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:19,770 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 245 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:19:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58902 states. [2022-02-11 00:19:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58902 to 56162. [2022-02-11 00:19:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56162 states, 56161 states have (on average 4.491622300172717) internal successors, (252254), 56161 states have internal predecessors, (252254), 0 states have call successors, (0), 0 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 00:19:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56162 states to 56162 states and 252254 transitions. [2022-02-11 00:19:22,141 INFO L78 Accepts]: Start accepts. Automaton has 56162 states and 252254 transitions. Word has length 31 [2022-02-11 00:19:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:22,141 INFO L470 AbstractCegarLoop]: Abstraction has 56162 states and 252254 transitions. [2022-02-11 00:19:22,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:19:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 56162 states and 252254 transitions. [2022-02-11 00:19:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:22,370 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:22,370 INFO L515 BasicCegarLoop]: trace histogram [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 00:19:22,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:22,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-11 00:19:22,571 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:22,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash -844078751, now seen corresponding path program 38 times [2022-02-11 00:19:22,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:22,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716748077] [2022-02-11 00:19:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:22,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:19:22,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:22,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716748077] [2022-02-11 00:19:22,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716748077] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:22,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429598720] [2022-02-11 00:19:22,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:19:22,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:22,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:22,649 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:22,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-11 00:19:22,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:19:22,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:22,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:22,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:19:23,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:19:23,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429598720] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:23,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:23,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 10 [2022-02-11 00:19:23,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233256030] [2022-02-11 00:19:23,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:23,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:19:23,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:23,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:19:23,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:23,353 INFO L87 Difference]: Start difference. First operand 56162 states and 252254 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:19:24,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:24,645 INFO L93 Difference]: Finished difference Result 59091 states and 262890 transitions. [2022-02-11 00:19:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:19:24,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 00:19:24,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:24,960 INFO L225 Difference]: With dead ends: 59091 [2022-02-11 00:19:24,960 INFO L226 Difference]: Without dead ends: 58955 [2022-02-11 00:19:24,960 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:24,960 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 136 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:24,960 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 254 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:19:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58955 states. [2022-02-11 00:19:26,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58955 to 56590. [2022-02-11 00:19:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56590 states, 56589 states have (on average 4.489706480057961) internal successors, (254068), 56589 states have internal predecessors, (254068), 0 states have call successors, (0), 0 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 00:19:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56590 states to 56590 states and 254068 transitions. [2022-02-11 00:19:27,094 INFO L78 Accepts]: Start accepts. Automaton has 56590 states and 254068 transitions. Word has length 31 [2022-02-11 00:19:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:27,095 INFO L470 AbstractCegarLoop]: Abstraction has 56590 states and 254068 transitions. [2022-02-11 00:19:27,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:19:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 56590 states and 254068 transitions. [2022-02-11 00:19:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:27,250 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:27,251 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:27,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:27,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-11 00:19:27,451 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1607875169, now seen corresponding path program 25 times [2022-02-11 00:19:27,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:27,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074590261] [2022-02-11 00:19:27,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:27,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:27,540 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 00:19:27,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:27,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074590261] [2022-02-11 00:19:27,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074590261] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:27,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244163581] [2022-02-11 00:19:27,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:19:27,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:27,541 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:27,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-11 00:19:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:27,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:27,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:28,215 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 00:19:28,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:28,386 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 00:19:28,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244163581] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:28,386 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:28,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-02-11 00:19:28,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444978011] [2022-02-11 00:19:28,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:28,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:19:28,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:19:28,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:28,387 INFO L87 Difference]: Start difference. First operand 56590 states and 254068 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:19:29,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:29,450 INFO L93 Difference]: Finished difference Result 58466 states and 260628 transitions. [2022-02-11 00:19:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:19:29,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:19:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:29,749 INFO L225 Difference]: With dead ends: 58466 [2022-02-11 00:19:29,749 INFO L226 Difference]: Without dead ends: 57978 [2022-02-11 00:19:29,749 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:29,749 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 84 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:29,749 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 224 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:19:29,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57978 states. [2022-02-11 00:19:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57978 to 57226. [2022-02-11 00:19:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57226 states, 57225 states have (on average 4.477483617300131) internal successors, (256224), 57225 states have internal predecessors, (256224), 0 states have call successors, (0), 0 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 00:19:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57226 states to 57226 states and 256224 transitions. [2022-02-11 00:19:31,499 INFO L78 Accepts]: Start accepts. Automaton has 57226 states and 256224 transitions. Word has length 31 [2022-02-11 00:19:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:31,500 INFO L470 AbstractCegarLoop]: Abstraction has 57226 states and 256224 transitions. [2022-02-11 00:19:31,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 00:19:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 57226 states and 256224 transitions. [2022-02-11 00:19:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:32,057 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:32,058 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:32,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:32,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:32,269 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:32,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1028420631, now seen corresponding path program 26 times [2022-02-11 00:19:32,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:32,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063000178] [2022-02-11 00:19:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:32,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:32,364 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 00:19:32,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:32,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063000178] [2022-02-11 00:19:32,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063000178] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:32,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975131345] [2022-02-11 00:19:32,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:19:32,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:32,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:32,366 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:32,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-11 00:19:32,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:19:32,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:32,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:32,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:32,765 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 00:19:32,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:32,936 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 00:19:32,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975131345] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:32,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:32,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-02-11 00:19:32,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195504088] [2022-02-11 00:19:32,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:32,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:19:32,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:19:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:32,937 INFO L87 Difference]: Start difference. First operand 57226 states and 256224 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:19:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:34,114 INFO L93 Difference]: Finished difference Result 59296 states and 263623 transitions. [2022-02-11 00:19:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:19:34,115 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:19:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:34,469 INFO L225 Difference]: With dead ends: 59296 [2022-02-11 00:19:34,469 INFO L226 Difference]: Without dead ends: 58728 [2022-02-11 00:19:34,469 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:34,469 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:34,469 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 210 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:19:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58728 states. [2022-02-11 00:19:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58728 to 57536. [2022-02-11 00:19:36,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57536 states, 57535 states have (on average 4.477570174676284) internal successors, (257617), 57535 states have internal predecessors, (257617), 0 states have call successors, (0), 0 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 00:19:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57536 states to 57536 states and 257617 transitions. [2022-02-11 00:19:37,071 INFO L78 Accepts]: Start accepts. Automaton has 57536 states and 257617 transitions. Word has length 31 [2022-02-11 00:19:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:37,071 INFO L470 AbstractCegarLoop]: Abstraction has 57536 states and 257617 transitions. [2022-02-11 00:19:37,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:19:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 57536 states and 257617 transitions. [2022-02-11 00:19:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:37,502 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:37,503 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:37,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:37,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-02-11 00:19:37,703 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:37,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash -547667103, now seen corresponding path program 27 times [2022-02-11 00:19:37,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:37,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78128287] [2022-02-11 00:19:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:37,829 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 00:19:37,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:37,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78128287] [2022-02-11 00:19:37,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78128287] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:37,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893351885] [2022-02-11 00:19:37,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:19:37,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:37,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:37,831 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:37,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-11 00:19:37,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 00:19:37,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:37,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:37,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:38,433 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 00:19:38,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:38,611 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 00:19:38,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893351885] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:38,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:38,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-02-11 00:19:38,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838056548] [2022-02-11 00:19:38,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:38,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:19:38,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:38,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:19:38,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:19:38,613 INFO L87 Difference]: Start difference. First operand 57536 states and 257617 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:19:39,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:39,889 INFO L93 Difference]: Finished difference Result 59752 states and 266049 transitions. [2022-02-11 00:19:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:19:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 00:19:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:40,240 INFO L225 Difference]: With dead ends: 59752 [2022-02-11 00:19:40,241 INFO L226 Difference]: Without dead ends: 59408 [2022-02-11 00:19:40,241 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 13 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:19:40,241 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:40,241 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 151 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:19:40,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59408 states. [2022-02-11 00:19:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59408 to 58236. [2022-02-11 00:19:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58236 states, 58235 states have (on average 4.475744826994076) internal successors, (260645), 58235 states have internal predecessors, (260645), 0 states have call successors, (0), 0 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 00:19:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58236 states to 58236 states and 260645 transitions. [2022-02-11 00:19:42,644 INFO L78 Accepts]: Start accepts. Automaton has 58236 states and 260645 transitions. Word has length 31 [2022-02-11 00:19:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:42,644 INFO L470 AbstractCegarLoop]: Abstraction has 58236 states and 260645 transitions. [2022-02-11 00:19:42,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:19:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 58236 states and 260645 transitions. [2022-02-11 00:19:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:42,831 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:42,831 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:42,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:43,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:43,032 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash -342426891, now seen corresponding path program 28 times [2022-02-11 00:19:43,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:43,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747392554] [2022-02-11 00:19:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:43,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:43,115 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 00:19:43,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:43,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747392554] [2022-02-11 00:19:43,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747392554] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:43,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828983545] [2022-02-11 00:19:43,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:19:43,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:43,117 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:43,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-11 00:19:43,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:19:43,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:43,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:43,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:43,621 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 00:19:43,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:43,779 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 00:19:43,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828983545] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:43,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:43,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-02-11 00:19:43,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071342039] [2022-02-11 00:19:43,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:43,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:19:43,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:43,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:19:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:43,779 INFO L87 Difference]: Start difference. First operand 58236 states and 260645 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:19:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:44,980 INFO L93 Difference]: Finished difference Result 60992 states and 270781 transitions. [2022-02-11 00:19:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:19:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 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 00:19:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:45,500 INFO L225 Difference]: With dead ends: 60992 [2022-02-11 00:19:45,500 INFO L226 Difference]: Without dead ends: 60500 [2022-02-11 00:19:45,500 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:45,500 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 84 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:45,500 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 214 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:19:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60500 states. [2022-02-11 00:19:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60500 to 58344. [2022-02-11 00:19:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58344 states, 58343 states have (on average 4.473287283821538) internal successors, (260985), 58343 states have internal predecessors, (260985), 0 states have call successors, (0), 0 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 00:19:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58344 states to 58344 states and 260985 transitions. [2022-02-11 00:19:47,344 INFO L78 Accepts]: Start accepts. Automaton has 58344 states and 260985 transitions. Word has length 31 [2022-02-11 00:19:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:47,344 INFO L470 AbstractCegarLoop]: Abstraction has 58344 states and 260985 transitions. [2022-02-11 00:19:47,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:19:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 58344 states and 260985 transitions. [2022-02-11 00:19:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:47,498 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:47,498 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:47,882 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forcibly destroying the process [2022-02-11 00:19:47,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:47,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:47,888 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:47,888 INFO L85 PathProgramCache]: Analyzing trace with hash -407456723, now seen corresponding path program 29 times [2022-02-11 00:19:47,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:47,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592622253] [2022-02-11 00:19:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:47,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:47,971 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 00:19:47,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:47,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592622253] [2022-02-11 00:19:47,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592622253] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:47,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835606794] [2022-02-11 00:19:47,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:19:47,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:47,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:47,973 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:47,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-11 00:19:48,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:19:48,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:48,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:48,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:48,322 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 00:19:48,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:48,471 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 00:19:48,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835606794] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:48,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:48,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 10 [2022-02-11 00:19:48,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692989188] [2022-02-11 00:19:48,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:48,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:19:48,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:48,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:19:48,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:48,473 INFO L87 Difference]: Start difference. First operand 58344 states and 260985 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:19:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:49,637 INFO L93 Difference]: Finished difference Result 59652 states and 265608 transitions. [2022-02-11 00:19:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:19:49,638 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 00:19:49,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:49,985 INFO L225 Difference]: With dead ends: 59652 [2022-02-11 00:19:49,985 INFO L226 Difference]: Without dead ends: 59238 [2022-02-11 00:19:49,985 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:49,985 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 104 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:49,985 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 193 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:19:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59238 states. [2022-02-11 00:19:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59238 to 58262. [2022-02-11 00:19:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58262 states, 58261 states have (on average 4.478707883489813) internal successors, (260934), 58261 states have internal predecessors, (260934), 0 states have call successors, (0), 0 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 00:19:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58262 states to 58262 states and 260934 transitions. [2022-02-11 00:19:52,531 INFO L78 Accepts]: Start accepts. Automaton has 58262 states and 260934 transitions. Word has length 31 [2022-02-11 00:19:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:52,532 INFO L470 AbstractCegarLoop]: Abstraction has 58262 states and 260934 transitions. [2022-02-11 00:19:52,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:19:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 58262 states and 260934 transitions. [2022-02-11 00:19:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:52,748 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:52,748 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:52,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:52,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:52,949 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:52,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1478595103, now seen corresponding path program 30 times [2022-02-11 00:19:52,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:52,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143819126] [2022-02-11 00:19:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:52,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:53,027 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 00:19:53,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:53,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143819126] [2022-02-11 00:19:53,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143819126] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:53,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752210041] [2022-02-11 00:19:53,028 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:19:53,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:53,029 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:53,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-11 00:19:53,054 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:19:53,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:19:53,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:53,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:53,524 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 00:19:53,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:53,700 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 00:19:53,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752210041] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:53,700 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:53,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-02-11 00:19:53,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300493126] [2022-02-11 00:19:53,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:53,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:19:53,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:53,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:19:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:53,701 INFO L87 Difference]: Start difference. First operand 58262 states and 260934 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:19:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:19:54,930 INFO L93 Difference]: Finished difference Result 61006 states and 271294 transitions. [2022-02-11 00:19:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:19:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 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 00:19:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:19:55,268 INFO L225 Difference]: With dead ends: 61006 [2022-02-11 00:19:55,268 INFO L226 Difference]: Without dead ends: 60518 [2022-02-11 00:19:55,268 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:55,268 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 80 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:19:55,268 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 191 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:19:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60518 states. [2022-02-11 00:19:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60518 to 59102. [2022-02-11 00:19:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59102 states, 59101 states have (on average 4.474340535693136) internal successors, (264438), 59101 states have internal predecessors, (264438), 0 states have call successors, (0), 0 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 00:19:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59102 states to 59102 states and 264438 transitions. [2022-02-11 00:19:57,596 INFO L78 Accepts]: Start accepts. Automaton has 59102 states and 264438 transitions. Word has length 31 [2022-02-11 00:19:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:19:57,597 INFO L470 AbstractCegarLoop]: Abstraction has 59102 states and 264438 transitions. [2022-02-11 00:19:57,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:19:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 59102 states and 264438 transitions. [2022-02-11 00:19:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:19:57,755 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:19:57,756 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:19:57,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-11 00:19:57,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2022-02-11 00:19:57,971 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:19:57,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:19:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1513778873, now seen corresponding path program 31 times [2022-02-11 00:19:57,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:19:57,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141187167] [2022-02-11 00:19:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:19:57,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:19:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:58,057 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 00:19:58,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:19:58,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141187167] [2022-02-11 00:19:58,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141187167] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:19:58,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176476372] [2022-02-11 00:19:58,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:19:58,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:19:58,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:19:58,059 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:19:58,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-11 00:19:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:19:58,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:19:58,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:19:58,829 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 00:19:58,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:19:59,012 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 00:19:59,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176476372] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:19:59,013 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:19:59,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-02-11 00:19:59,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120679002] [2022-02-11 00:19:59,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:19:59,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:19:59,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:19:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:19:59,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:19:59,014 INFO L87 Difference]: Start difference. First operand 59102 states and 264438 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:20:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:00,127 INFO L93 Difference]: Finished difference Result 61926 states and 274644 transitions. [2022-02-11 00:20:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:20:00,127 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:20:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:00,444 INFO L225 Difference]: With dead ends: 61926 [2022-02-11 00:20:00,445 INFO L226 Difference]: Without dead ends: 61334 [2022-02-11 00:20:00,445 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:20:00,445 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 97 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:00,445 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 210 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:20:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61334 states. [2022-02-11 00:20:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61334 to 59758. [2022-02-11 00:20:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59758 states, 59757 states have (on average 4.472948775875629) internal successors, (267290), 59757 states have internal predecessors, (267290), 0 states have call successors, (0), 0 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 00:20:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59758 states to 59758 states and 267290 transitions. [2022-02-11 00:20:02,838 INFO L78 Accepts]: Start accepts. Automaton has 59758 states and 267290 transitions. Word has length 31 [2022-02-11 00:20:02,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:02,838 INFO L470 AbstractCegarLoop]: Abstraction has 59758 states and 267290 transitions. [2022-02-11 00:20:02,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:20:02,838 INFO L276 IsEmpty]: Start isEmpty. Operand 59758 states and 267290 transitions. [2022-02-11 00:20:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:03,050 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:03,050 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:03,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-02-11 00:20:03,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:03,251 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1611215857, now seen corresponding path program 32 times [2022-02-11 00:20:03,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:03,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739702113] [2022-02-11 00:20:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:03,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:03,340 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 00:20:03,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:03,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739702113] [2022-02-11 00:20:03,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739702113] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:03,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782001922] [2022-02-11 00:20:03,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:20:03,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:03,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:03,341 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:03,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-11 00:20:03,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:20:03,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:20:03,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:03,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:03,810 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 00:20:03,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:04,003 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 00:20:04,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782001922] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:04,003 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:04,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2022-02-11 00:20:04,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093565966] [2022-02-11 00:20:04,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:04,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:20:04,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:04,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:20:04,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:20:04,004 INFO L87 Difference]: Start difference. First operand 59758 states and 267290 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:20:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:05,402 INFO L93 Difference]: Finished difference Result 61736 states and 274450 transitions. [2022-02-11 00:20:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:20:05,403 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:20:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:05,799 INFO L225 Difference]: With dead ends: 61736 [2022-02-11 00:20:05,800 INFO L226 Difference]: Without dead ends: 61198 [2022-02-11 00:20:05,800 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:20:05,800 INFO L934 BasicCegarLoop]: 31 mSDtfsCounter, 96 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:05,800 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 226 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:20:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61198 states. [2022-02-11 00:20:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61198 to 59694. [2022-02-11 00:20:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59694 states, 59693 states have (on average 4.476203239910878) internal successors, (267198), 59693 states have internal predecessors, (267198), 0 states have call successors, (0), 0 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 00:20:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59694 states to 59694 states and 267198 transitions. [2022-02-11 00:20:08,655 INFO L78 Accepts]: Start accepts. Automaton has 59694 states and 267198 transitions. Word has length 31 [2022-02-11 00:20:08,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:08,655 INFO L470 AbstractCegarLoop]: Abstraction has 59694 states and 267198 transitions. [2022-02-11 00:20:08,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:20:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 59694 states and 267198 transitions. [2022-02-11 00:20:08,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:08,916 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:08,916 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:08,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-02-11 00:20:09,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:09,131 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:09,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash -748846751, now seen corresponding path program 33 times [2022-02-11 00:20:09,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:09,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380352446] [2022-02-11 00:20:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:09,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:09,267 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 00:20:09,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:09,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380352446] [2022-02-11 00:20:09,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380352446] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:09,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045231156] [2022-02-11 00:20:09,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:20:09,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:09,280 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:09,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-11 00:20:09,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:20:09,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:20:09,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:09,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:10,071 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 00:20:10,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:10,277 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 00:20:10,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045231156] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:10,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:10,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-02-11 00:20:10,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631503178] [2022-02-11 00:20:10,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:10,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:20:10,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:10,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:20:10,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:20:10,279 INFO L87 Difference]: Start difference. First operand 59694 states and 267198 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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 00:20:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:11,022 INFO L93 Difference]: Finished difference Result 60634 states and 270764 transitions. [2022-02-11 00:20:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:20:11,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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 31 [2022-02-11 00:20:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:11,691 INFO L225 Difference]: With dead ends: 60634 [2022-02-11 00:20:11,691 INFO L226 Difference]: Without dead ends: 60486 [2022-02-11 00:20:11,691 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 12 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:20:11,691 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:11,692 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 125 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:20:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60486 states. [2022-02-11 00:20:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60486 to 60106. [2022-02-11 00:20:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60106 states, 60105 states have (on average 4.475667581731969) internal successors, (269010), 60105 states have internal predecessors, (269010), 0 states have call successors, (0), 0 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 00:20:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60106 states to 60106 states and 269010 transitions. [2022-02-11 00:20:13,779 INFO L78 Accepts]: Start accepts. Automaton has 60106 states and 269010 transitions. Word has length 31 [2022-02-11 00:20:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:13,779 INFO L470 AbstractCegarLoop]: Abstraction has 60106 states and 269010 transitions. [2022-02-11 00:20:13,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 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 00:20:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 60106 states and 269010 transitions. [2022-02-11 00:20:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:14,540 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:14,540 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:14,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-02-11 00:20:14,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-02-11 00:20:14,743 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:14,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash -543606539, now seen corresponding path program 34 times [2022-02-11 00:20:14,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:14,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315134736] [2022-02-11 00:20:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:14,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:14,838 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 00:20:14,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:14,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315134736] [2022-02-11 00:20:14,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315134736] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:14,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410776] [2022-02-11 00:20:14,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:20:14,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:14,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:14,840 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:14,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-11 00:20:14,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:20:14,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:20:14,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:14,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:15,332 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 00:20:15,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:15,536 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 00:20:15,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:15,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:15,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 9 [2022-02-11 00:20:15,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127087821] [2022-02-11 00:20:15,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:15,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:20:15,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:15,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:20:15,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:20:15,538 INFO L87 Difference]: Start difference. First operand 60106 states and 269010 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 00:20:16,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:16,673 INFO L93 Difference]: Finished difference Result 61878 states and 275610 transitions. [2022-02-11 00:20:16,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:20:16,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 31 [2022-02-11 00:20:16,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:17,030 INFO L225 Difference]: With dead ends: 61878 [2022-02-11 00:20:17,030 INFO L226 Difference]: Without dead ends: 61434 [2022-02-11 00:20:17,030 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:20:17,031 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 74 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:17,031 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 133 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:20:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61434 states. [2022-02-11 00:20:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61434 to 60270. [2022-02-11 00:20:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60270 states, 60269 states have (on average 4.47284673712854) internal successors, (269574), 60269 states have internal predecessors, (269574), 0 states have call successors, (0), 0 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 00:20:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60270 states to 60270 states and 269574 transitions. [2022-02-11 00:20:19,595 INFO L78 Accepts]: Start accepts. Automaton has 60270 states and 269574 transitions. Word has length 31 [2022-02-11 00:20:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:19,595 INFO L470 AbstractCegarLoop]: Abstraction has 60270 states and 269574 transitions. [2022-02-11 00:20:19,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 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 00:20:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 60270 states and 269574 transitions. [2022-02-11 00:20:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:19,785 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:19,785 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:19,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-02-11 00:20:19,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-02-11 00:20:19,986 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:19,986 INFO L85 PathProgramCache]: Analyzing trace with hash -772548551, now seen corresponding path program 35 times [2022-02-11 00:20:19,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:19,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259764001] [2022-02-11 00:20:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:19,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:20,095 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 00:20:20,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:20,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259764001] [2022-02-11 00:20:20,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259764001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:20,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609070034] [2022-02-11 00:20:20,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:20:20,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:20,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:20,097 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:20,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-11 00:20:20,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:20:20,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:20:20,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:20,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:20,517 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 00:20:20,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:21,025 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 00:20:21,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609070034] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:21,025 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:21,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-02-11 00:20:21,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578186829] [2022-02-11 00:20:21,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:21,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:20:21,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:20:21,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:20:21,026 INFO L87 Difference]: Start difference. First operand 60270 states and 269574 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 00:20:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:22,164 INFO L93 Difference]: Finished difference Result 62022 states and 275690 transitions. [2022-02-11 00:20:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:20:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 31 [2022-02-11 00:20:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:22,877 INFO L225 Difference]: With dead ends: 62022 [2022-02-11 00:20:22,877 INFO L226 Difference]: Without dead ends: 61470 [2022-02-11 00:20:22,878 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:20:22,878 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 92 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:22,878 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 226 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:20:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61470 states. [2022-02-11 00:20:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61470 to 59542. [2022-02-11 00:20:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59542 states, 59541 states have (on average 4.473589627315631) internal successors, (266362), 59541 states have internal predecessors, (266362), 0 states have call successors, (0), 0 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 00:20:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59542 states to 59542 states and 266362 transitions. [2022-02-11 00:20:25,304 INFO L78 Accepts]: Start accepts. Automaton has 59542 states and 266362 transitions. Word has length 31 [2022-02-11 00:20:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:25,304 INFO L470 AbstractCegarLoop]: Abstraction has 59542 states and 266362 transitions. [2022-02-11 00:20:25,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 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 00:20:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 59542 states and 266362 transitions. [2022-02-11 00:20:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:25,966 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:25,966 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:25,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-02-11 00:20:26,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-02-11 00:20:26,167 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:26,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1635941737, now seen corresponding path program 36 times [2022-02-11 00:20:26,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:26,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069453341] [2022-02-11 00:20:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:26,253 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 00:20:26,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:26,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069453341] [2022-02-11 00:20:26,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069453341] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:26,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257414352] [2022-02-11 00:20:26,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:20:26,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:26,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:26,255 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:26,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-11 00:20:26,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:20:26,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:20:26,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:26,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:26,657 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 00:20:26,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:26,803 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 00:20:26,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257414352] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:26,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:26,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-02-11 00:20:26,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495437116] [2022-02-11 00:20:26,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:26,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:20:26,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:26,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:20:26,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:20:26,804 INFO L87 Difference]: Start difference. First operand 59542 states and 266362 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:20:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:27,897 INFO L93 Difference]: Finished difference Result 60802 states and 270854 transitions. [2022-02-11 00:20:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:20:27,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 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 00:20:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:28,223 INFO L225 Difference]: With dead ends: 60802 [2022-02-11 00:20:28,224 INFO L226 Difference]: Without dead ends: 60606 [2022-02-11 00:20:28,224 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 13 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:20:28,224 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:28,224 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 141 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:20:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60606 states. [2022-02-11 00:20:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60606 to 59794. [2022-02-11 00:20:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59794 states, 59793 states have (on average 4.473332998846018) internal successors, (267474), 59793 states have internal predecessors, (267474), 0 states have call successors, (0), 0 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 00:20:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59794 states to 59794 states and 267474 transitions. [2022-02-11 00:20:30,723 INFO L78 Accepts]: Start accepts. Automaton has 59794 states and 267474 transitions. Word has length 31 [2022-02-11 00:20:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:30,723 INFO L470 AbstractCegarLoop]: Abstraction has 59794 states and 267474 transitions. [2022-02-11 00:20:30,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:20:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 59794 states and 267474 transitions. [2022-02-11 00:20:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:30,917 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:30,917 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:30,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-11 00:20:31,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:31,118 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:31,118 INFO L85 PathProgramCache]: Analyzing trace with hash -690109279, now seen corresponding path program 37 times [2022-02-11 00:20:31,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:31,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288938987] [2022-02-11 00:20:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:31,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:31,198 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 00:20:31,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:31,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288938987] [2022-02-11 00:20:31,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288938987] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:31,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840365819] [2022-02-11 00:20:31,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:20:31,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:31,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:31,200 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:31,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-11 00:20:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:31,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:31,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:31,649 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 00:20:31,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:31,897 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 00:20:31,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840365819] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:31,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:31,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 9 [2022-02-11 00:20:31,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711167949] [2022-02-11 00:20:31,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:31,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:20:31,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:20:31,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:20:31,898 INFO L87 Difference]: Start difference. First operand 59794 states and 267474 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:20:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:33,608 INFO L93 Difference]: Finished difference Result 62098 states and 276004 transitions. [2022-02-11 00:20:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:20:33,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 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 00:20:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:33,973 INFO L225 Difference]: With dead ends: 62098 [2022-02-11 00:20:33,974 INFO L226 Difference]: Without dead ends: 61754 [2022-02-11 00:20:33,974 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 12 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:20:33,974 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 65 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:33,974 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 174 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:20:34,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61754 states. [2022-02-11 00:20:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61754 to 60254. [2022-02-11 00:20:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60254 states, 60253 states have (on average 4.470150863857401) internal successors, (269340), 60253 states have internal predecessors, (269340), 0 states have call successors, (0), 0 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 00:20:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60254 states to 60254 states and 269340 transitions. [2022-02-11 00:20:36,245 INFO L78 Accepts]: Start accepts. Automaton has 60254 states and 269340 transitions. Word has length 31 [2022-02-11 00:20:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:36,245 INFO L470 AbstractCegarLoop]: Abstraction has 60254 states and 269340 transitions. [2022-02-11 00:20:36,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:20:36,245 INFO L276 IsEmpty]: Start isEmpty. Operand 60254 states and 269340 transitions. [2022-02-11 00:20:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:36,414 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:36,414 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:36,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-02-11 00:20:36,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-02-11 00:20:36,615 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:36,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:36,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1651042397, now seen corresponding path program 38 times [2022-02-11 00:20:36,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:36,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171384152] [2022-02-11 00:20:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:36,730 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 00:20:36,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:36,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171384152] [2022-02-11 00:20:36,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171384152] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:36,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930645226] [2022-02-11 00:20:36,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:20:36,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:36,732 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:36,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-11 00:20:36,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:20:36,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:20:36,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:36,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:37,422 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 00:20:37,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:37,622 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 00:20:37,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930645226] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:37,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:37,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-02-11 00:20:37,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683263479] [2022-02-11 00:20:37,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:37,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:20:37,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:20:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:20:37,624 INFO L87 Difference]: Start difference. First operand 60254 states and 269340 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:20:38,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:38,682 INFO L93 Difference]: Finished difference Result 62498 states and 277194 transitions. [2022-02-11 00:20:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:20:38,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 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 00:20:38,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:39,001 INFO L225 Difference]: With dead ends: 62498 [2022-02-11 00:20:39,002 INFO L226 Difference]: Without dead ends: 62042 [2022-02-11 00:20:39,002 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:20:39,002 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 75 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:39,002 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 196 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:20:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62042 states. [2022-02-11 00:20:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62042 to 60106. [2022-02-11 00:20:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60106 states, 60105 states have (on average 4.462690291989019) internal successors, (268230), 60105 states have internal predecessors, (268230), 0 states have call successors, (0), 0 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 00:20:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60106 states to 60106 states and 268230 transitions. [2022-02-11 00:20:41,787 INFO L78 Accepts]: Start accepts. Automaton has 60106 states and 268230 transitions. Word has length 31 [2022-02-11 00:20:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:41,788 INFO L470 AbstractCegarLoop]: Abstraction has 60106 states and 268230 transitions. [2022-02-11 00:20:41,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 00:20:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 60106 states and 268230 transitions. [2022-02-11 00:20:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:41,996 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:41,996 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:42,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-02-11 00:20:42,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-02-11 00:20:42,197 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash -705882519, now seen corresponding path program 39 times [2022-02-11 00:20:42,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:42,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090224632] [2022-02-11 00:20:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:42,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:20:42,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:42,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090224632] [2022-02-11 00:20:42,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090224632] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:42,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405695104] [2022-02-11 00:20:42,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:20:42,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:42,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:42,318 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:42,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-11 00:20:42,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:20:42,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:20:42,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:42,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:42,775 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 00:20:42,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:20:42,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405695104] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:42,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:42,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 11 [2022-02-11 00:20:42,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376634101] [2022-02-11 00:20:42,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:42,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:20:42,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:20:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:20:42,934 INFO L87 Difference]: Start difference. First operand 60106 states and 268230 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:20:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:44,286 INFO L93 Difference]: Finished difference Result 63006 states and 278934 transitions. [2022-02-11 00:20:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:20:44,286 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 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 00:20:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:44,605 INFO L225 Difference]: With dead ends: 63006 [2022-02-11 00:20:44,605 INFO L226 Difference]: Without dead ends: 62418 [2022-02-11 00:20:44,605 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:20:44,605 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:44,605 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 220 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:20:44,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62418 states. [2022-02-11 00:20:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62418 to 57842. [2022-02-11 00:20:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57842 states, 57841 states have (on average 4.465794159852008) internal successors, (258306), 57841 states have internal predecessors, (258306), 0 states have call successors, (0), 0 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 00:20:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57842 states to 57842 states and 258306 transitions. [2022-02-11 00:20:46,914 INFO L78 Accepts]: Start accepts. Automaton has 57842 states and 258306 transitions. Word has length 31 [2022-02-11 00:20:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:46,914 INFO L470 AbstractCegarLoop]: Abstraction has 57842 states and 258306 transitions. [2022-02-11 00:20:46,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 00:20:46,915 INFO L276 IsEmpty]: Start isEmpty. Operand 57842 states and 258306 transitions. [2022-02-11 00:20:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:20:47,084 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:20:47,085 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:20:47,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-02-11 00:20:47,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-02-11 00:20:47,285 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-11 00:20:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:20:47,286 INFO L85 PathProgramCache]: Analyzing trace with hash -570103327, now seen corresponding path program 40 times [2022-02-11 00:20:47,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:20:47,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698528242] [2022-02-11 00:20:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:20:47,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:20:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:20:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:20:47,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:20:47,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698528242] [2022-02-11 00:20:47,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698528242] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:20:47,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589041354] [2022-02-11 00:20:47,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:20:47,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:20:47,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:20:47,382 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:20:47,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-11 00:20:47,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:20:47,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:20:47,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:20:47,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:20:48,208 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 00:20:48,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:20:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:20:48,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589041354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:20:48,348 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:20:48,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-02-11 00:20:48,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469462211] [2022-02-11 00:20:48,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:20:48,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:20:48,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:20:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:20:48,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:20:48,349 INFO L87 Difference]: Start difference. First operand 57842 states and 258306 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:20:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:20:49,307 INFO L93 Difference]: Finished difference Result 59524 states and 264220 transitions. [2022-02-11 00:20:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:20:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 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 00:20:49,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:20:49,611 INFO L225 Difference]: With dead ends: 59524 [2022-02-11 00:20:49,611 INFO L226 Difference]: Without dead ends: 59226 [2022-02-11 00:20:49,612 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 13 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:20:49,612 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 76 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:20:49,612 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 169 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:20:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59226 states. [2022-02-11 00:20:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59226 to 58158. [2022-02-11 00:20:51,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58158 states, 58157 states have (on average 4.4656017332393345) internal successors, (259706), 58157 states have internal predecessors, (259706), 0 states have call successors, (0), 0 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 00:20:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58158 states to 58158 states and 259706 transitions. [2022-02-11 00:20:51,703 INFO L78 Accepts]: Start accepts. Automaton has 58158 states and 259706 transitions. Word has length 31 [2022-02-11 00:20:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:20:51,703 INFO L470 AbstractCegarLoop]: Abstraction has 58158 states and 259706 transitions. [2022-02-11 00:20:51,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 00:20:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 58158 states and 259706 transitions.