/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 14:28:46,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 14:28:46,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 14:28:46,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 14:28:46,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 14:28:46,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 14:28:46,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 14:28:46,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 14:28:46,602 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 14:28:46,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 14:28:46,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 14:28:46,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 14:28:46,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 14:28:46,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 14:28:46,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 14:28:46,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 14:28:46,604 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 14:28:46,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 14:28:46,604 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 14:28:46,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 14:28:46,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 14:28:46,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 14:28:46,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 14:28:46,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 14:28:46,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 14:28:46,605 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 14:28:46,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 14:28:46,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 14:28:46,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 14:28:46,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 14:28:46,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 14:28:46,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 14:28:46,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 14:28:46,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 14:28:46,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 14:28:46,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 14:28:46,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 14:28:46,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 14:28:46,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 14:28:46,607 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 14:28:46,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 14:28:46,607 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 14:28:46,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 14:28:46,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 14:28:46,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 14:28:46,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 14:28:46,858 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 14:28:46,859 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 14:28:46,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl [2022-01-18 14:28:46,860 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl' [2022-01-18 14:28:46,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 14:28:46,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 14:28:46,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 14:28:46,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 14:28:46,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 14:28:46,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,909 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 14:28:46,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 14:28:46,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 14:28:46,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 14:28:46,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 14:28:46,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 14:28:46,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 14:28:46,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 14:28:46,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 14:28:46,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/1) ... [2022-01-18 14:28:46,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 14:28:46,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:46,952 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) [2022-01-18 14:28:46,972 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 [2022-01-18 14:28:46,994 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 14:28:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 14:28:46,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 14:28:46,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 14:28:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 14:28:46,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 14:28:46,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 14:28:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 14:28:46,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 14:28:46,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 14:28:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 14:28:46,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 14:28:46,996 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 14:28:47,039 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 14:28:47,040 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 14:28:47,156 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 14:28:47,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 14:28:47,168 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 14:28:47,169 INFO L202 PluginConnector]: Adding new model mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:28:47 BoogieIcfgContainer [2022-01-18 14:28:47,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 14:28:47,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 14:28:47,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 14:28:47,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 14:28:47,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 02:28:46" (1/2) ... [2022-01-18 14:28:47,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70461232 and model type mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:28:47, skipping insertion in model container [2022-01-18 14:28:47,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:28:47" (2/2) ... [2022-01-18 14:28:47,179 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.bpl [2022-01-18 14:28:47,183 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 14:28:47,183 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 14:28:47,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 14:28:47,183 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 14:28:47,210 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 14:28:47,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 14:28:47,250 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 [2022-01-18 14:28:47,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 14:28:47,259 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 76 flow [2022-01-18 14:28:47,310 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 14:28:47,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:47,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:47,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1698271758, now seen corresponding path program 1 times [2022-01-18 14:28:47,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:47,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217324452] [2022-01-18 14:28:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:47,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:47,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:47,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217324452] [2022-01-18 14:28:47,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217324452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 14:28:47,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 14:28:47,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 14:28:47,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829232652] [2022-01-18 14:28:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:47,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 14:28:47,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:47,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 14:28:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 14:28:47,656 INFO L87 Difference]: Start difference. First operand has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 0 states have call successors, (0), 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 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:47,722 INFO L93 Difference]: Finished difference Result 214 states and 614 transitions. [2022-01-18 14:28:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 14:28:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-01-18 14:28:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:47,736 INFO L225 Difference]: With dead ends: 214 [2022-01-18 14:28:47,736 INFO L226 Difference]: Without dead ends: 199 [2022-01-18 14:28:47,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 14:28:47,741 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:47,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 14:28:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-18 14:28:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 146. [2022-01-18 14:28:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.8689655172413793) internal successors, (416), 145 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 416 transitions. [2022-01-18 14:28:47,833 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 416 transitions. Word has length 15 [2022-01-18 14:28:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:47,834 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 416 transitions. [2022-01-18 14:28:47,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 416 transitions. [2022-01-18 14:28:47,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 14:28:47,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:47,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:47,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 14:28:47,839 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1717700848, now seen corresponding path program 1 times [2022-01-18 14:28:47,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:47,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519790462] [2022-01-18 14:28:47,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:47,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:47,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:47,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519790462] [2022-01-18 14:28:47,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519790462] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:47,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981289578] [2022-01-18 14:28:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:47,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:47,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:47,944 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) [2022-01-18 14:28:47,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 14:28:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:48,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 14:28:48,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:48,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:48,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981289578] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:48,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:48,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-01-18 14:28:48,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376931447] [2022-01-18 14:28:48,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:48,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 14:28:48,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:48,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 14:28:48,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 14:28:48,184 INFO L87 Difference]: Start difference. First operand 146 states and 416 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:48,360 INFO L93 Difference]: Finished difference Result 344 states and 959 transitions. [2022-01-18 14:28:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 14:28:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 14:28:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:48,368 INFO L225 Difference]: With dead ends: 344 [2022-01-18 14:28:48,368 INFO L226 Difference]: Without dead ends: 344 [2022-01-18 14:28:48,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:28:48,370 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:48,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-01-18 14:28:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 172. [2022-01-18 14:28:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.953216374269006) internal successors, (505), 171 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 505 transitions. [2022-01-18 14:28:48,419 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 505 transitions. Word has length 17 [2022-01-18 14:28:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:48,419 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 505 transitions. [2022-01-18 14:28:48,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 505 transitions. [2022-01-18 14:28:48,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 14:28:48,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:48,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:48,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:48,631 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 [2022-01-18 14:28:48,632 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1520327342, now seen corresponding path program 1 times [2022-01-18 14:28:48,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:48,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040273582] [2022-01-18 14:28:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:48,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:48,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:48,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040273582] [2022-01-18 14:28:48,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040273582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 14:28:48,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 14:28:48,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 14:28:48,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060284860] [2022-01-18 14:28:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:48,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 14:28:48,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 14:28:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 14:28:48,669 INFO L87 Difference]: Start difference. First operand 172 states and 505 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:48,740 INFO L93 Difference]: Finished difference Result 237 states and 639 transitions. [2022-01-18 14:28:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 14:28:48,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-18 14:28:48,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:48,746 INFO L225 Difference]: With dead ends: 237 [2022-01-18 14:28:48,746 INFO L226 Difference]: Without dead ends: 227 [2022-01-18 14:28:48,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 14:28:48,750 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:48,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 20 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-18 14:28:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 186. [2022-01-18 14:28:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.843243243243243) internal successors, (526), 185 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 526 transitions. [2022-01-18 14:28:48,774 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 526 transitions. Word has length 17 [2022-01-18 14:28:48,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:48,774 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 526 transitions. [2022-01-18 14:28:48,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,774 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 526 transitions. [2022-01-18 14:28:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 14:28:48,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:48,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:48,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 14:28:48,785 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:48,786 INFO L85 PathProgramCache]: Analyzing trace with hash 388922220, now seen corresponding path program 1 times [2022-01-18 14:28:48,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:48,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570188887] [2022-01-18 14:28:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:48,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:48,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:48,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570188887] [2022-01-18 14:28:48,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570188887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 14:28:48,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 14:28:48,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 14:28:48,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203805272] [2022-01-18 14:28:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:48,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 14:28:48,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 14:28:48,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 14:28:48,822 INFO L87 Difference]: Start difference. First operand 186 states and 526 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:48,892 INFO L93 Difference]: Finished difference Result 317 states and 868 transitions. [2022-01-18 14:28:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 14:28:48,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-18 14:28:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:48,896 INFO L225 Difference]: With dead ends: 317 [2022-01-18 14:28:48,896 INFO L226 Difference]: Without dead ends: 302 [2022-01-18 14:28:48,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 14:28:48,904 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:48,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 20 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-01-18 14:28:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 231. [2022-01-18 14:28:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.8869565217391306) internal successors, (664), 230 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 664 transitions. [2022-01-18 14:28:48,924 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 664 transitions. Word has length 17 [2022-01-18 14:28:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:48,925 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 664 transitions. [2022-01-18 14:28:48,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 664 transitions. [2022-01-18 14:28:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 14:28:48,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:48,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:48,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 14:28:48,926 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -367822358, now seen corresponding path program 2 times [2022-01-18 14:28:48,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:48,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065987144] [2022-01-18 14:28:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:48,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:48,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:48,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065987144] [2022-01-18 14:28:48,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065987144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 14:28:48,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 14:28:48,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 14:28:48,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231634209] [2022-01-18 14:28:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:48,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 14:28:48,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 14:28:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 14:28:48,985 INFO L87 Difference]: Start difference. First operand 231 states and 664 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:49,025 INFO L93 Difference]: Finished difference Result 274 states and 779 transitions. [2022-01-18 14:28:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 14:28:49,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-18 14:28:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:49,027 INFO L225 Difference]: With dead ends: 274 [2022-01-18 14:28:49,028 INFO L226 Difference]: Without dead ends: 274 [2022-01-18 14:28:49,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 14:28:49,031 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:49,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 14:28:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-18 14:28:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 243. [2022-01-18 14:28:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 2.8925619834710745) internal successors, (700), 242 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 700 transitions. [2022-01-18 14:28:49,044 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 700 transitions. Word has length 17 [2022-01-18 14:28:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:49,044 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 700 transitions. [2022-01-18 14:28:49,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 700 transitions. [2022-01-18 14:28:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 14:28:49,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:49,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:49,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 14:28:49,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -320771866, now seen corresponding path program 3 times [2022-01-18 14:28:49,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:49,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119104086] [2022-01-18 14:28:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:49,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:49,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:49,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119104086] [2022-01-18 14:28:49,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119104086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 14:28:49,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 14:28:49,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 14:28:49,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376970504] [2022-01-18 14:28:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:49,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 14:28:49,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 14:28:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 14:28:49,105 INFO L87 Difference]: Start difference. First operand 243 states and 700 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:49,161 INFO L93 Difference]: Finished difference Result 296 states and 805 transitions. [2022-01-18 14:28:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 14:28:49,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-18 14:28:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:49,163 INFO L225 Difference]: With dead ends: 296 [2022-01-18 14:28:49,164 INFO L226 Difference]: Without dead ends: 282 [2022-01-18 14:28:49,164 INFO L932 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 [2022-01-18 14:28:49,165 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:49,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 14:28:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-18 14:28:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 229. [2022-01-18 14:28:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.8421052631578947) internal successors, (648), 228 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 648 transitions. [2022-01-18 14:28:49,175 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 648 transitions. Word has length 17 [2022-01-18 14:28:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:49,175 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 648 transitions. [2022-01-18 14:28:49,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,175 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 648 transitions. [2022-01-18 14:28:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 14:28:49,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:49,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:49,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 14:28:49,177 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash 830951980, now seen corresponding path program 2 times [2022-01-18 14:28:49,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:49,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991667282] [2022-01-18 14:28:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:49,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:49,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:49,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991667282] [2022-01-18 14:28:49,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991667282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 14:28:49,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 14:28:49,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 14:28:49,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41280168] [2022-01-18 14:28:49,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:49,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 14:28:49,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 14:28:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 14:28:49,217 INFO L87 Difference]: Start difference. First operand 229 states and 648 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:49,277 INFO L93 Difference]: Finished difference Result 236 states and 661 transitions. [2022-01-18 14:28:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 14:28:49,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-18 14:28:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:49,279 INFO L225 Difference]: With dead ends: 236 [2022-01-18 14:28:49,279 INFO L226 Difference]: Without dead ends: 221 [2022-01-18 14:28:49,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 14:28:49,281 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:49,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 20 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-01-18 14:28:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 212. [2022-01-18 14:28:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.876777251184834) internal successors, (607), 211 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 607 transitions. [2022-01-18 14:28:49,290 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 607 transitions. Word has length 17 [2022-01-18 14:28:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:49,290 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 607 transitions. [2022-01-18 14:28:49,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 607 transitions. [2022-01-18 14:28:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 14:28:49,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:49,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:49,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 14:28:49,293 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1480901912, now seen corresponding path program 3 times [2022-01-18 14:28:49,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:49,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944448780] [2022-01-18 14:28:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:49,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:49,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:49,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944448780] [2022-01-18 14:28:49,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944448780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 14:28:49,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 14:28:49,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 14:28:49,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342439156] [2022-01-18 14:28:49,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:49,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 14:28:49,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 14:28:49,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 14:28:49,323 INFO L87 Difference]: Start difference. First operand 212 states and 607 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:49,351 INFO L93 Difference]: Finished difference Result 225 states and 655 transitions. [2022-01-18 14:28:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 14:28:49,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-18 14:28:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:49,353 INFO L225 Difference]: With dead ends: 225 [2022-01-18 14:28:49,353 INFO L226 Difference]: Without dead ends: 225 [2022-01-18 14:28:49,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 14:28:49,354 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:49,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 14:28:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-18 14:28:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2022-01-18 14:28:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.92018779342723) internal successors, (622), 213 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 622 transitions. [2022-01-18 14:28:49,360 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 622 transitions. Word has length 17 [2022-01-18 14:28:49,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:49,360 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 622 transitions. [2022-01-18 14:28:49,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 622 transitions. [2022-01-18 14:28:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 14:28:49,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:49,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:49,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 14:28:49,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash -947012380, now seen corresponding path program 4 times [2022-01-18 14:28:49,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:49,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507068932] [2022-01-18 14:28:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:49,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:49,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:49,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507068932] [2022-01-18 14:28:49,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507068932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 14:28:49,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 14:28:49,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 14:28:49,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155844139] [2022-01-18 14:28:49,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:49,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 14:28:49,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:49,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 14:28:49,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 14:28:49,392 INFO L87 Difference]: Start difference. First operand 214 states and 622 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:49,430 INFO L93 Difference]: Finished difference Result 217 states and 619 transitions. [2022-01-18 14:28:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 14:28:49,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-01-18 14:28:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:49,431 INFO L225 Difference]: With dead ends: 217 [2022-01-18 14:28:49,432 INFO L226 Difference]: Without dead ends: 205 [2022-01-18 14:28:49,432 INFO L932 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 [2022-01-18 14:28:49,432 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:49,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 14:28:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-01-18 14:28:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 193. [2022-01-18 14:28:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.9114583333333335) internal successors, (559), 192 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 559 transitions. [2022-01-18 14:28:49,438 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 559 transitions. Word has length 17 [2022-01-18 14:28:49,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:49,438 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 559 transitions. [2022-01-18 14:28:49,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 559 transitions. [2022-01-18 14:28:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 14:28:49,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:49,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:49,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 14:28:49,440 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:49,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2082193652, now seen corresponding path program 1 times [2022-01-18 14:28:49,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:49,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084908199] [2022-01-18 14:28:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:49,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:49,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:49,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084908199] [2022-01-18 14:28:49,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084908199] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:49,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895607262] [2022-01-18 14:28:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:49,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:49,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:49,480 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) [2022-01-18 14:28:49,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 14:28:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:49,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 14:28:49,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:49,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:49,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895607262] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:49,593 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:49,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-01-18 14:28:49,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099917055] [2022-01-18 14:28:49,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:49,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 14:28:49,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 14:28:49,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 14:28:49,595 INFO L87 Difference]: Start difference. First operand 193 states and 559 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:49,657 INFO L93 Difference]: Finished difference Result 251 states and 731 transitions. [2022-01-18 14:28:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 14:28:49,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 14:28:49,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:49,659 INFO L225 Difference]: With dead ends: 251 [2022-01-18 14:28:49,659 INFO L226 Difference]: Without dead ends: 251 [2022-01-18 14:28:49,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:28:49,660 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:49,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 28 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-01-18 14:28:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 190. [2022-01-18 14:28:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.9100529100529102) internal successors, (550), 189 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 550 transitions. [2022-01-18 14:28:49,668 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 550 transitions. Word has length 19 [2022-01-18 14:28:49,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:49,668 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 550 transitions. [2022-01-18 14:28:49,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 550 transitions. [2022-01-18 14:28:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 14:28:49,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:49,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:49,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:49,879 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,SelfDestructingSolverStorable9 [2022-01-18 14:28:49,880 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:49,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:49,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1166690382, now seen corresponding path program 1 times [2022-01-18 14:28:49,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:49,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562665434] [2022-01-18 14:28:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:49,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:49,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:49,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562665434] [2022-01-18 14:28:49,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562665434] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:49,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991713300] [2022-01-18 14:28:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:49,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:49,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:49,952 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) [2022-01-18 14:28:49,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 14:28:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:49,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 14:28:49,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:50,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:50,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991713300] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:50,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:50,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2022-01-18 14:28:50,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096051390] [2022-01-18 14:28:50,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:50,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 14:28:50,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 14:28:50,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:28:50,321 INFO L87 Difference]: Start difference. First operand 190 states and 550 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 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) [2022-01-18 14:28:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:50,399 INFO L93 Difference]: Finished difference Result 516 states and 1501 transitions. [2022-01-18 14:28:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 14:28:50,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 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 21 [2022-01-18 14:28:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:50,402 INFO L225 Difference]: With dead ends: 516 [2022-01-18 14:28:50,402 INFO L226 Difference]: Without dead ends: 501 [2022-01-18 14:28:50,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:28:50,403 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 44 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:50,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 161 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-01-18 14:28:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 287. [2022-01-18 14:28:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 3.1363636363636362) internal successors, (897), 286 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 897 transitions. [2022-01-18 14:28:50,415 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 897 transitions. Word has length 21 [2022-01-18 14:28:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:50,416 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 897 transitions. [2022-01-18 14:28:50,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 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) [2022-01-18 14:28:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 897 transitions. [2022-01-18 14:28:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 14:28:50,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:50,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:50,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:50,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:50,632 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2047129442, now seen corresponding path program 2 times [2022-01-18 14:28:50,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:50,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757002889] [2022-01-18 14:28:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:50,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:50,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:50,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757002889] [2022-01-18 14:28:50,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757002889] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:50,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629026643] [2022-01-18 14:28:50,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:28:50,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:50,705 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) [2022-01-18 14:28:50,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 14:28:50,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:28:50,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:50,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 14:28:50,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:50,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:51,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629026643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:51,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:51,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2022-01-18 14:28:51,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745478111] [2022-01-18 14:28:51,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:51,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 14:28:51,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:51,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 14:28:51,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:28:51,032 INFO L87 Difference]: Start difference. First operand 287 states and 897 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 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) [2022-01-18 14:28:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:51,103 INFO L93 Difference]: Finished difference Result 609 states and 1835 transitions. [2022-01-18 14:28:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 14:28:51,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 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 21 [2022-01-18 14:28:51,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:51,108 INFO L225 Difference]: With dead ends: 609 [2022-01-18 14:28:51,108 INFO L226 Difference]: Without dead ends: 594 [2022-01-18 14:28:51,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:28:51,109 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:51,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 138 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-01-18 14:28:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 376. [2022-01-18 14:28:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.2346666666666666) internal successors, (1213), 375 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1213 transitions. [2022-01-18 14:28:51,125 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1213 transitions. Word has length 21 [2022-01-18 14:28:51,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:51,125 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 1213 transitions. [2022-01-18 14:28:51,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 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) [2022-01-18 14:28:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1213 transitions. [2022-01-18 14:28:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 14:28:51,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:51,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:51,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:51,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:51,347 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2140019540, now seen corresponding path program 3 times [2022-01-18 14:28:51,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:51,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107285135] [2022-01-18 14:28:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:51,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:51,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:51,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107285135] [2022-01-18 14:28:51,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107285135] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:51,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326271183] [2022-01-18 14:28:51,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:28:51,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:51,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:51,451 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) [2022-01-18 14:28:51,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 14:28:51,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 14:28:51,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:51,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 14:28:51,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:51,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:28:51,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326271183] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:51,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:51,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2022-01-18 14:28:51,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837287267] [2022-01-18 14:28:51,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:51,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 14:28:51,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 14:28:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:28:51,762 INFO L87 Difference]: Start difference. First operand 376 states and 1213 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) [2022-01-18 14:28:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:51,932 INFO L93 Difference]: Finished difference Result 683 states and 2108 transitions. [2022-01-18 14:28:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 14:28:51,932 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 21 [2022-01-18 14:28:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:51,936 INFO L225 Difference]: With dead ends: 683 [2022-01-18 14:28:51,936 INFO L226 Difference]: Without dead ends: 668 [2022-01-18 14:28:51,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:28:51,937 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:51,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 256 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-01-18 14:28:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 424. [2022-01-18 14:28:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 3.3120567375886525) internal successors, (1401), 423 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1401 transitions. [2022-01-18 14:28:51,953 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1401 transitions. Word has length 21 [2022-01-18 14:28:51,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:51,953 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1401 transitions. [2022-01-18 14:28:51,953 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) [2022-01-18 14:28:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1401 transitions. [2022-01-18 14:28:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 14:28:51,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:51,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:51,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:52,168 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,SelfDestructingSolverStorable12 [2022-01-18 14:28:52,168 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:52,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1117539740, now seen corresponding path program 4 times [2022-01-18 14:28:52,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:52,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422009428] [2022-01-18 14:28:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:52,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:52,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:52,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422009428] [2022-01-18 14:28:52,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422009428] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:52,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43350587] [2022-01-18 14:28:52,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:28:52,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:52,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:52,253 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) [2022-01-18 14:28:52,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 14:28:52,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:28:52,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:52,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 14:28:52,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:52,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:28:52,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43350587] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:52,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:52,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2022-01-18 14:28:52,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712705904] [2022-01-18 14:28:52,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:52,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 14:28:52,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 14:28:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:28:52,531 INFO L87 Difference]: Start difference. First operand 424 states and 1401 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) [2022-01-18 14:28:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:52,655 INFO L93 Difference]: Finished difference Result 727 states and 2284 transitions. [2022-01-18 14:28:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 14:28:52,655 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 21 [2022-01-18 14:28:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:52,659 INFO L225 Difference]: With dead ends: 727 [2022-01-18 14:28:52,659 INFO L226 Difference]: Without dead ends: 712 [2022-01-18 14:28:52,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 14:28:52,660 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 58 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:52,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 193 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-01-18 14:28:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 497. [2022-01-18 14:28:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 3.3649193548387095) internal successors, (1669), 496 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1669 transitions. [2022-01-18 14:28:52,677 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1669 transitions. Word has length 21 [2022-01-18 14:28:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:52,677 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1669 transitions. [2022-01-18 14:28:52,677 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) [2022-01-18 14:28:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1669 transitions. [2022-01-18 14:28:52,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 14:28:52,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:52,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:52,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 14:28:52,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:52,895 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash -466698584, now seen corresponding path program 5 times [2022-01-18 14:28:52,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:52,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647113514] [2022-01-18 14:28:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:52,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:52,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:52,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647113514] [2022-01-18 14:28:52,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647113514] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:52,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229859285] [2022-01-18 14:28:52,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:28:52,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:52,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:52,972 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) [2022-01-18 14:28:52,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 14:28:53,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:28:53,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:53,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 14:28:53,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:53,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:28:53,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229859285] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:53,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:53,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2022-01-18 14:28:53,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425533558] [2022-01-18 14:28:53,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:53,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 14:28:53,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 14:28:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:28:53,244 INFO L87 Difference]: Start difference. First operand 497 states and 1669 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 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) [2022-01-18 14:28:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:53,395 INFO L93 Difference]: Finished difference Result 846 states and 2684 transitions. [2022-01-18 14:28:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 14:28:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 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 21 [2022-01-18 14:28:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:53,400 INFO L225 Difference]: With dead ends: 846 [2022-01-18 14:28:53,400 INFO L226 Difference]: Without dead ends: 831 [2022-01-18 14:28:53,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:28:53,401 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 60 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:53,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 181 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-01-18 14:28:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 568. [2022-01-18 14:28:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.4038800705467374) internal successors, (1930), 567 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1930 transitions. [2022-01-18 14:28:53,418 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1930 transitions. Word has length 21 [2022-01-18 14:28:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:53,418 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1930 transitions. [2022-01-18 14:28:53,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 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) [2022-01-18 14:28:53,419 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1930 transitions. [2022-01-18 14:28:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 14:28:53,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:53,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:53,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:53,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:53,643 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1622751956, now seen corresponding path program 6 times [2022-01-18 14:28:53,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:53,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174936045] [2022-01-18 14:28:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:53,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:53,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:53,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174936045] [2022-01-18 14:28:53,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174936045] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:53,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618956935] [2022-01-18 14:28:53,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:28:53,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:53,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:53,718 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) [2022-01-18 14:28:53,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 14:28:53,765 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 14:28:53,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:53,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 14:28:53,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:53,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:28:53,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618956935] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:53,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 14:28:53,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-01-18 14:28:53,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174544478] [2022-01-18 14:28:53,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 14:28:53,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 14:28:53,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:53,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 14:28:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:28:54,000 INFO L87 Difference]: Start difference. First operand 568 states and 1930 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) [2022-01-18 14:28:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:54,050 INFO L93 Difference]: Finished difference Result 852 states and 2756 transitions. [2022-01-18 14:28:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 14:28:54,050 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 [2022-01-18 14:28:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:54,055 INFO L225 Difference]: With dead ends: 852 [2022-01-18 14:28:54,055 INFO L226 Difference]: Without dead ends: 837 [2022-01-18 14:28:54,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:28:54,056 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 30 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:54,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 113 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 14:28:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-01-18 14:28:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 613. [2022-01-18 14:28:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 3.4526143790849675) internal successors, (2113), 612 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 2113 transitions. [2022-01-18 14:28:54,075 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 2113 transitions. Word has length 21 [2022-01-18 14:28:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:54,075 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 2113 transitions. [2022-01-18 14:28:54,076 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) [2022-01-18 14:28:54,076 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 2113 transitions. [2022-01-18 14:28:54,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:54,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:54,077 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:54,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:54,291 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,SelfDestructingSolverStorable15 [2022-01-18 14:28:54,292 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:54,292 INFO L85 PathProgramCache]: Analyzing trace with hash 271449364, now seen corresponding path program 7 times [2022-01-18 14:28:54,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:54,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058714497] [2022-01-18 14:28:54,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:54,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:54,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:54,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058714497] [2022-01-18 14:28:54,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058714497] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:54,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018222328] [2022-01-18 14:28:54,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:28:54,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:54,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:54,329 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) [2022-01-18 14:28:54,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 14:28:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:54,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:54,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:54,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:54,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018222328] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:54,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:54,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 14:28:54,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882945349] [2022-01-18 14:28:54,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:54,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:28:54,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:54,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:28:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:28:54,467 INFO L87 Difference]: Start difference. First operand 613 states and 2113 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:54,575 INFO L93 Difference]: Finished difference Result 1015 states and 3183 transitions. [2022-01-18 14:28:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:28:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 14:28:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:54,581 INFO L225 Difference]: With dead ends: 1015 [2022-01-18 14:28:54,581 INFO L226 Difference]: Without dead ends: 1015 [2022-01-18 14:28:54,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:28:54,583 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 96 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:54,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 75 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-01-18 14:28:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 679. [2022-01-18 14:28:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 3.3997050147492627) internal successors, (2305), 678 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2305 transitions. [2022-01-18 14:28:54,610 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2305 transitions. Word has length 23 [2022-01-18 14:28:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:54,610 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 2305 transitions. [2022-01-18 14:28:54,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2305 transitions. [2022-01-18 14:28:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:54,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:54,613 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:54,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:54,832 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,SelfDestructingSolverStorable16 [2022-01-18 14:28:54,833 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash -914641452, now seen corresponding path program 8 times [2022-01-18 14:28:54,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:54,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011923872] [2022-01-18 14:28:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:54,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:54,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:54,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011923872] [2022-01-18 14:28:54,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011923872] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:54,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897186580] [2022-01-18 14:28:54,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:28:54,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:54,863 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) [2022-01-18 14:28:54,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 14:28:54,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:28:54,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:54,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:54,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:54,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:54,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897186580] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:54,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:54,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 14:28:54,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829147178] [2022-01-18 14:28:54,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:54,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:28:54,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:28:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:28:54,976 INFO L87 Difference]: Start difference. First operand 679 states and 2305 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:55,073 INFO L93 Difference]: Finished difference Result 1019 states and 3281 transitions. [2022-01-18 14:28:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:28:55,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 14:28:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:55,079 INFO L225 Difference]: With dead ends: 1019 [2022-01-18 14:28:55,079 INFO L226 Difference]: Without dead ends: 994 [2022-01-18 14:28:55,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:28:55,080 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:55,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 42 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-01-18 14:28:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 833. [2022-01-18 14:28:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 3.3822115384615383) internal successors, (2814), 832 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 2814 transitions. [2022-01-18 14:28:55,104 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 2814 transitions. Word has length 23 [2022-01-18 14:28:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:55,105 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 2814 transitions. [2022-01-18 14:28:55,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 2814 transitions. [2022-01-18 14:28:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:55,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:55,107 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:55,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:55,330 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,SelfDestructingSolverStorable17 [2022-01-18 14:28:55,330 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:55,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1495214352, now seen corresponding path program 9 times [2022-01-18 14:28:55,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:55,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437702849] [2022-01-18 14:28:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:55,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:28:55,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:55,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437702849] [2022-01-18 14:28:55,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437702849] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:55,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332913225] [2022-01-18 14:28:55,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:28:55,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:55,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:55,364 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) [2022-01-18 14:28:55,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 14:28:55,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 14:28:55,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:55,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:55,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:28:55,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:28:55,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332913225] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:55,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:55,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 14:28:55,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47665221] [2022-01-18 14:28:55,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:55,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:28:55,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:28:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:28:55,492 INFO L87 Difference]: Start difference. First operand 833 states and 2814 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:55,600 INFO L93 Difference]: Finished difference Result 1551 states and 5055 transitions. [2022-01-18 14:28:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:28:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 14:28:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:55,608 INFO L225 Difference]: With dead ends: 1551 [2022-01-18 14:28:55,608 INFO L226 Difference]: Without dead ends: 1515 [2022-01-18 14:28:55,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:28:55,609 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 102 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:55,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 44 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-01-18 14:28:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1055. [2022-01-18 14:28:55,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 3.461100569259962) internal successors, (3648), 1054 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 3648 transitions. [2022-01-18 14:28:55,642 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 3648 transitions. Word has length 23 [2022-01-18 14:28:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:55,642 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 3648 transitions. [2022-01-18 14:28:55,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 3648 transitions. [2022-01-18 14:28:55,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:55,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:55,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:55,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:55,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:55,866 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash 9646224, now seen corresponding path program 10 times [2022-01-18 14:28:55,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:55,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305588189] [2022-01-18 14:28:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:55,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:55,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:55,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305588189] [2022-01-18 14:28:55,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305588189] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:55,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38709193] [2022-01-18 14:28:55,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:28:55,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:55,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:55,898 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) [2022-01-18 14:28:55,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 14:28:55,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:28:55,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:55,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:55,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:55,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:56,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38709193] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:56,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:56,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 14:28:56,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726979491] [2022-01-18 14:28:56,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:56,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 14:28:56,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 14:28:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 14:28:56,015 INFO L87 Difference]: Start difference. First operand 1055 states and 3648 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:56,111 INFO L93 Difference]: Finished difference Result 1290 states and 4241 transitions. [2022-01-18 14:28:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:28:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 14:28:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:56,118 INFO L225 Difference]: With dead ends: 1290 [2022-01-18 14:28:56,118 INFO L226 Difference]: Without dead ends: 1290 [2022-01-18 14:28:56,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:28:56,119 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 80 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:56,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 46 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-01-18 14:28:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1059. [2022-01-18 14:28:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 3.4224952741020793) internal successors, (3621), 1058 states have internal predecessors, (3621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 3621 transitions. [2022-01-18 14:28:56,155 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 3621 transitions. Word has length 23 [2022-01-18 14:28:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:56,155 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 3621 transitions. [2022-01-18 14:28:56,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 3621 transitions. [2022-01-18 14:28:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:56,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:56,159 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:56,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:56,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:56,379 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:56,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash 456257100, now seen corresponding path program 11 times [2022-01-18 14:28:56,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:56,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004987771] [2022-01-18 14:28:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:56,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:56,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004987771] [2022-01-18 14:28:56,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004987771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883558345] [2022-01-18 14:28:56,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:28:56,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:56,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:56,427 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) [2022-01-18 14:28:56,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 14:28:56,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:28:56,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:56,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:56,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:56,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:56,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883558345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:56,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:56,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 14:28:56,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760123525] [2022-01-18 14:28:56,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:56,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 14:28:56,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 14:28:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 14:28:56,546 INFO L87 Difference]: Start difference. First operand 1059 states and 3621 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:56,622 INFO L93 Difference]: Finished difference Result 1286 states and 4195 transitions. [2022-01-18 14:28:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 14:28:56,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 14:28:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:56,629 INFO L225 Difference]: With dead ends: 1286 [2022-01-18 14:28:56,629 INFO L226 Difference]: Without dead ends: 1280 [2022-01-18 14:28:56,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:28:56,630 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:56,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 41 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-01-18 14:28:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1084. [2022-01-18 14:28:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1083 states have (on average 3.3979686057248384) internal successors, (3680), 1083 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3680 transitions. [2022-01-18 14:28:56,662 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3680 transitions. Word has length 23 [2022-01-18 14:28:56,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:56,662 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 3680 transitions. [2022-01-18 14:28:56,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3680 transitions. [2022-01-18 14:28:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:56,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:56,666 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:56,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:56,883 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,SelfDestructingSolverStorable20 [2022-01-18 14:28:56,883 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1608804944, now seen corresponding path program 12 times [2022-01-18 14:28:56,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142124048] [2022-01-18 14:28:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:56,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:56,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:56,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142124048] [2022-01-18 14:28:56,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142124048] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:56,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876296050] [2022-01-18 14:28:56,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:28:56,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:56,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:56,921 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) [2022-01-18 14:28:56,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 14:28:56,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:28:56,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:56,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:56,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:28:57,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:28:57,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876296050] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:57,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:57,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-01-18 14:28:57,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334244843] [2022-01-18 14:28:57,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:57,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 14:28:57,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:57,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 14:28:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:28:57,074 INFO L87 Difference]: Start difference. First operand 1084 states and 3680 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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) [2022-01-18 14:28:57,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:57,577 INFO L93 Difference]: Finished difference Result 3419 states and 10720 transitions. [2022-01-18 14:28:57,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 14:28:57,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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 23 [2022-01-18 14:28:57,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:57,594 INFO L225 Difference]: With dead ends: 3419 [2022-01-18 14:28:57,594 INFO L226 Difference]: Without dead ends: 3373 [2022-01-18 14:28:57,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=1262, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 14:28:57,595 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 462 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:57,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 71 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:28:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2022-01-18 14:28:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 1577. [2022-01-18 14:28:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1576 states have (on average 3.5266497461928936) internal successors, (5558), 1576 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 5558 transitions. [2022-01-18 14:28:57,653 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 5558 transitions. Word has length 23 [2022-01-18 14:28:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:57,653 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 5558 transitions. [2022-01-18 14:28:57,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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) [2022-01-18 14:28:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 5558 transitions. [2022-01-18 14:28:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:57,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:57,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:57,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:57,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:57,867 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:57,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1526508494, now seen corresponding path program 13 times [2022-01-18 14:28:57,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:57,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71694288] [2022-01-18 14:28:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:57,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:57,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:57,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71694288] [2022-01-18 14:28:57,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71694288] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:57,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099502108] [2022-01-18 14:28:57,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:28:57,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:57,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:57,902 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) [2022-01-18 14:28:57,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 14:28:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:57,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:57,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:28:57,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:28:58,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099502108] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:58,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:58,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 14:28:58,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354723848] [2022-01-18 14:28:58,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:58,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 14:28:58,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 14:28:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 14:28:58,024 INFO L87 Difference]: Start difference. First operand 1577 states and 5558 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) [2022-01-18 14:28:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:58,112 INFO L93 Difference]: Finished difference Result 2581 states and 8875 transitions. [2022-01-18 14:28:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:28:58,113 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 23 [2022-01-18 14:28:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:58,121 INFO L225 Difference]: With dead ends: 2581 [2022-01-18 14:28:58,122 INFO L226 Difference]: Without dead ends: 2581 [2022-01-18 14:28:58,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:28:58,122 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 101 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:58,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 45 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:28:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2022-01-18 14:28:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 1980. [2022-01-18 14:28:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1979 states have (on average 3.6195048004042447) internal successors, (7163), 1979 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 7163 transitions. [2022-01-18 14:28:58,189 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 7163 transitions. Word has length 23 [2022-01-18 14:28:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:58,190 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 7163 transitions. [2022-01-18 14:28:58,190 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) [2022-01-18 14:28:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 7163 transitions. [2022-01-18 14:28:58,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:58,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:58,195 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:58,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:58,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:58,417 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash 18908238, now seen corresponding path program 14 times [2022-01-18 14:28:58,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:58,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726810988] [2022-01-18 14:28:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:58,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:58,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:58,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726810988] [2022-01-18 14:28:58,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726810988] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:58,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899701446] [2022-01-18 14:28:58,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:28:58,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:58,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:58,456 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) [2022-01-18 14:28:58,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 14:28:58,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:28:58,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:58,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:58,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:58,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:58,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899701446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:58,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:58,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-01-18 14:28:58,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641153404] [2022-01-18 14:28:58,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:58,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 14:28:58,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 14:28:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:28:58,591 INFO L87 Difference]: Start difference. First operand 1980 states and 7163 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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) [2022-01-18 14:28:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:28:59,131 INFO L93 Difference]: Finished difference Result 4590 states and 15506 transitions. [2022-01-18 14:28:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 14:28:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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 23 [2022-01-18 14:28:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:28:59,147 INFO L225 Difference]: With dead ends: 4590 [2022-01-18 14:28:59,148 INFO L226 Difference]: Without dead ends: 4355 [2022-01-18 14:28:59,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 14:28:59,149 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 243 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:28:59,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 122 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:28:59,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2022-01-18 14:28:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 3174. [2022-01-18 14:28:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 3.6706586826347305) internal successors, (11647), 3173 states have internal predecessors, (11647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:28:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 11647 transitions. [2022-01-18 14:28:59,298 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 11647 transitions. Word has length 23 [2022-01-18 14:28:59,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:28:59,298 INFO L470 AbstractCegarLoop]: Abstraction has 3174 states and 11647 transitions. [2022-01-18 14:28:59,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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) [2022-01-18 14:28:59,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 11647 transitions. [2022-01-18 14:28:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:28:59,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:28:59,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:28:59,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 14:28:59,531 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,SelfDestructingSolverStorable23 [2022-01-18 14:28:59,532 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:28:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:28:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash -593433466, now seen corresponding path program 15 times [2022-01-18 14:28:59,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:28:59,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93236001] [2022-01-18 14:28:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:28:59,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:28:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:28:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:59,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:28:59,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93236001] [2022-01-18 14:28:59,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93236001] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:28:59,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690576923] [2022-01-18 14:28:59,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:28:59,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:28:59,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:28:59,559 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) [2022-01-18 14:28:59,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 14:28:59,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 14:28:59,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:28:59,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:28:59,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:28:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:59,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:28:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:28:59,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690576923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:28:59,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:28:59,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-01-18 14:28:59,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635150677] [2022-01-18 14:28:59,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:28:59,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 14:28:59,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:28:59,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 14:28:59,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:28:59,700 INFO L87 Difference]: Start difference. First operand 3174 states and 11647 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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) [2022-01-18 14:29:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:00,174 INFO L93 Difference]: Finished difference Result 7723 states and 26392 transitions. [2022-01-18 14:29:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 14:29:00,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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 23 [2022-01-18 14:29:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:00,202 INFO L225 Difference]: With dead ends: 7723 [2022-01-18 14:29:00,202 INFO L226 Difference]: Without dead ends: 7502 [2022-01-18 14:29:00,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 14:29:00,203 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 304 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:00,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 81 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7502 states. [2022-01-18 14:29:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7502 to 5181. [2022-01-18 14:29:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 3.6795366795366795) internal successors, (19060), 5180 states have internal predecessors, (19060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 19060 transitions. [2022-01-18 14:29:00,363 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 19060 transitions. Word has length 23 [2022-01-18 14:29:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:00,363 INFO L470 AbstractCegarLoop]: Abstraction has 5181 states and 19060 transitions. [2022-01-18 14:29:00,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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) [2022-01-18 14:29:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 19060 transitions. [2022-01-18 14:29:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:29:00,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:00,375 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:00,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:00,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:00,591 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:00,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:00,591 INFO L85 PathProgramCache]: Analyzing trace with hash -712649734, now seen corresponding path program 16 times [2022-01-18 14:29:00,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:00,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560820840] [2022-01-18 14:29:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:00,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:00,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:00,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560820840] [2022-01-18 14:29:00,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560820840] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:00,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398761728] [2022-01-18 14:29:00,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:29:00,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:00,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:00,622 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) [2022-01-18 14:29:00,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 14:29:00,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:29:00,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:00,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:00,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:00,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:00,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398761728] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:00,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:00,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 14:29:00,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816818228] [2022-01-18 14:29:00,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:00,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:29:00,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:00,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:29:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:29:00,746 INFO L87 Difference]: Start difference. First operand 5181 states and 19060 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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) [2022-01-18 14:29:00,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:00,855 INFO L93 Difference]: Finished difference Result 5996 states and 21312 transitions. [2022-01-18 14:29:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:29:00,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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 [2022-01-18 14:29:00,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:00,872 INFO L225 Difference]: With dead ends: 5996 [2022-01-18 14:29:00,873 INFO L226 Difference]: Without dead ends: 5952 [2022-01-18 14:29:00,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:29:00,873 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 115 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:00,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 42 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:29:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5952 states. [2022-01-18 14:29:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5952 to 5234. [2022-01-18 14:29:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 3.675329638830499) internal successors, (19233), 5233 states have internal predecessors, (19233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 19233 transitions. [2022-01-18 14:29:01,088 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 19233 transitions. Word has length 23 [2022-01-18 14:29:01,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:01,089 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 19233 transitions. [2022-01-18 14:29:01,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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) [2022-01-18 14:29:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 19233 transitions. [2022-01-18 14:29:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:29:01,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:01,102 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:01,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:01,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:01,315 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash -974522626, now seen corresponding path program 17 times [2022-01-18 14:29:01,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:01,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599860330] [2022-01-18 14:29:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:01,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:01,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:01,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599860330] [2022-01-18 14:29:01,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599860330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:01,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158694128] [2022-01-18 14:29:01,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:29:01,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:01,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:01,348 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) [2022-01-18 14:29:01,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 14:29:01,375 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:29:01,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:01,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:01,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:01,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:01,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158694128] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:01,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:01,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-18 14:29:01,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351805335] [2022-01-18 14:29:01,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:01,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 14:29:01,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 14:29:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:29:01,460 INFO L87 Difference]: Start difference. First operand 5234 states and 19233 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 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) [2022-01-18 14:29:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:01,905 INFO L93 Difference]: Finished difference Result 9182 states and 31734 transitions. [2022-01-18 14:29:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 14:29:01,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 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 23 [2022-01-18 14:29:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:01,933 INFO L225 Difference]: With dead ends: 9182 [2022-01-18 14:29:01,933 INFO L226 Difference]: Without dead ends: 9113 [2022-01-18 14:29:01,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=294, Invalid=1038, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 14:29:01,934 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 336 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:01,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 80 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9113 states. [2022-01-18 14:29:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9113 to 6200. [2022-01-18 14:29:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6200 states, 6199 states have (on average 3.698015809001452) internal successors, (22924), 6199 states have internal predecessors, (22924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 22924 transitions. [2022-01-18 14:29:02,119 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 22924 transitions. Word has length 23 [2022-01-18 14:29:02,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:02,119 INFO L470 AbstractCegarLoop]: Abstraction has 6200 states and 22924 transitions. [2022-01-18 14:29:02,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 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) [2022-01-18 14:29:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 22924 transitions. [2022-01-18 14:29:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:29:02,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:02,133 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:02,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:02,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:02,347 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1591412358, now seen corresponding path program 18 times [2022-01-18 14:29:02,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:02,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093340622] [2022-01-18 14:29:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:02,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:02,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:02,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093340622] [2022-01-18 14:29:02,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093340622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:02,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964020645] [2022-01-18 14:29:02,384 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:29:02,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:02,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:02,385 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) [2022-01-18 14:29:02,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 14:29:02,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 14:29:02,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:02,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:02,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:02,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:02,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964020645] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:02,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:02,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-01-18 14:29:02,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380985088] [2022-01-18 14:29:02,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:02,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 14:29:02,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 14:29:02,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:29:02,489 INFO L87 Difference]: Start difference. First operand 6200 states and 22924 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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) [2022-01-18 14:29:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:03,029 INFO L93 Difference]: Finished difference Result 10470 states and 36628 transitions. [2022-01-18 14:29:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 14:29:03,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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 23 [2022-01-18 14:29:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:03,055 INFO L225 Difference]: With dead ends: 10470 [2022-01-18 14:29:03,055 INFO L226 Difference]: Without dead ends: 10415 [2022-01-18 14:29:03,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 14:29:03,056 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 264 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:03,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 99 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10415 states. [2022-01-18 14:29:03,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10415 to 7346. [2022-01-18 14:29:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 3.723621511232131) internal successors, (27350), 7345 states have internal predecessors, (27350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 27350 transitions. [2022-01-18 14:29:03,284 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 27350 transitions. Word has length 23 [2022-01-18 14:29:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:03,284 INFO L470 AbstractCegarLoop]: Abstraction has 7346 states and 27350 transitions. [2022-01-18 14:29:03,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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) [2022-01-18 14:29:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 27350 transitions. [2022-01-18 14:29:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:29:03,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:03,302 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:03,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:03,515 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,SelfDestructingSolverStorable27 [2022-01-18 14:29:03,515 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:03,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash -918016754, now seen corresponding path program 19 times [2022-01-18 14:29:03,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:03,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274005564] [2022-01-18 14:29:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:03,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:03,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:03,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274005564] [2022-01-18 14:29:03,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274005564] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:03,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001016469] [2022-01-18 14:29:03,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:29:03,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:03,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:03,542 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) [2022-01-18 14:29:03,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 14:29:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:03,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:03,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:03,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:03,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001016469] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:03,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:03,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 14:29:03,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658813139] [2022-01-18 14:29:03,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:03,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 14:29:03,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 14:29:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 14:29:03,645 INFO L87 Difference]: Start difference. First operand 7346 states and 27350 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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) [2022-01-18 14:29:03,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:03,773 INFO L93 Difference]: Finished difference Result 8860 states and 32006 transitions. [2022-01-18 14:29:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:29:03,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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 23 [2022-01-18 14:29:03,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:03,799 INFO L225 Difference]: With dead ends: 8860 [2022-01-18 14:29:03,799 INFO L226 Difference]: Without dead ends: 8846 [2022-01-18 14:29:03,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:29:03,800 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:03,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 54 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:29:03,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8846 states. [2022-01-18 14:29:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8846 to 7488. [2022-01-18 14:29:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7488 states, 7487 states have (on average 3.7205823427273943) internal successors, (27856), 7487 states have internal predecessors, (27856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 27856 transitions. [2022-01-18 14:29:03,999 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 27856 transitions. Word has length 23 [2022-01-18 14:29:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:03,999 INFO L470 AbstractCegarLoop]: Abstraction has 7488 states and 27856 transitions. [2022-01-18 14:29:03,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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) [2022-01-18 14:29:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 27856 transitions. [2022-01-18 14:29:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:29:04,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:04,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:04,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:04,232 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,SelfDestructingSolverStorable28 [2022-01-18 14:29:04,232 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1342327990, now seen corresponding path program 20 times [2022-01-18 14:29:04,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:04,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378208423] [2022-01-18 14:29:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:04,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:04,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:04,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378208423] [2022-01-18 14:29:04,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378208423] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:04,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923559969] [2022-01-18 14:29:04,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:29:04,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:04,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:04,266 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) [2022-01-18 14:29:04,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 14:29:04,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:29:04,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:04,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:04,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:04,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:04,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923559969] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:04,392 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:04,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-18 14:29:04,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029876930] [2022-01-18 14:29:04,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:04,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 14:29:04,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 14:29:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:29:04,394 INFO L87 Difference]: Start difference. First operand 7488 states and 27856 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 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) [2022-01-18 14:29:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:04,879 INFO L93 Difference]: Finished difference Result 13198 states and 46799 transitions. [2022-01-18 14:29:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 14:29:04,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 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 23 [2022-01-18 14:29:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:04,910 INFO L225 Difference]: With dead ends: 13198 [2022-01-18 14:29:04,910 INFO L226 Difference]: Without dead ends: 13147 [2022-01-18 14:29:04,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=298, Invalid=1108, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 14:29:04,911 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 191 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:04,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 85 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13147 states. [2022-01-18 14:29:05,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13147 to 9889. [2022-01-18 14:29:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 9888 states have (on average 3.7355380258899675) internal successors, (36937), 9888 states have internal predecessors, (36937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 36937 transitions. [2022-01-18 14:29:05,201 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 36937 transitions. Word has length 23 [2022-01-18 14:29:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:05,201 INFO L470 AbstractCegarLoop]: Abstraction has 9889 states and 36937 transitions. [2022-01-18 14:29:05,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 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) [2022-01-18 14:29:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 36937 transitions. [2022-01-18 14:29:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 14:29:05,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:05,223 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:05,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:05,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:05,445 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 778321758, now seen corresponding path program 21 times [2022-01-18 14:29:05,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:05,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463106007] [2022-01-18 14:29:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:05,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:05,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:05,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463106007] [2022-01-18 14:29:05,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463106007] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:05,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274935838] [2022-01-18 14:29:05,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:29:05,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:05,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:05,476 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) [2022-01-18 14:29:05,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 14:29:05,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 14:29:05,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:05,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:05,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:05,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:05,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274935838] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:05,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:05,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 14:29:05,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185972494] [2022-01-18 14:29:05,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:05,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:29:05,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:29:05,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:29:05,571 INFO L87 Difference]: Start difference. First operand 9889 states and 36937 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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) [2022-01-18 14:29:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:05,803 INFO L93 Difference]: Finished difference Result 11772 states and 42696 transitions. [2022-01-18 14:29:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:29:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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 [2022-01-18 14:29:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:05,838 INFO L225 Difference]: With dead ends: 11772 [2022-01-18 14:29:05,838 INFO L226 Difference]: Without dead ends: 11719 [2022-01-18 14:29:05,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:29:05,839 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:05,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 60 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:29:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11719 states. [2022-01-18 14:29:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11719 to 9815. [2022-01-18 14:29:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9815 states, 9814 states have (on average 3.7139800285306706) internal successors, (36449), 9814 states have internal predecessors, (36449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9815 states to 9815 states and 36449 transitions. [2022-01-18 14:29:06,098 INFO L78 Accepts]: Start accepts. Automaton has 9815 states and 36449 transitions. Word has length 23 [2022-01-18 14:29:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:06,098 INFO L470 AbstractCegarLoop]: Abstraction has 9815 states and 36449 transitions. [2022-01-18 14:29:06,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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) [2022-01-18 14:29:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9815 states and 36449 transitions. [2022-01-18 14:29:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 14:29:06,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:06,119 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:06,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:06,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:06,320 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1875112408, now seen corresponding path program 22 times [2022-01-18 14:29:06,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002051885] [2022-01-18 14:29:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:06,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:06,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:06,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002051885] [2022-01-18 14:29:06,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002051885] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:06,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660881237] [2022-01-18 14:29:06,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:29:06,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:06,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:06,354 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) [2022-01-18 14:29:06,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 14:29:06,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:29:06,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:06,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:06,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:06,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:06,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660881237] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:06,466 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:06,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 14:29:06,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535630518] [2022-01-18 14:29:06,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:06,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 14:29:06,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 14:29:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 14:29:06,467 INFO L87 Difference]: Start difference. First operand 9815 states and 36449 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2022-01-18 14:29:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:06,645 INFO L93 Difference]: Finished difference Result 14865 states and 53865 transitions. [2022-01-18 14:29:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 14:29:06,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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 [2022-01-18 14:29:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:06,697 INFO L225 Difference]: With dead ends: 14865 [2022-01-18 14:29:06,697 INFO L226 Difference]: Without dead ends: 14851 [2022-01-18 14:29:06,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:29:06,699 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 92 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:06,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 46 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:29:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14851 states. [2022-01-18 14:29:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14851 to 12374. [2022-01-18 14:29:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12374 states, 12373 states have (on average 3.750990058999434) internal successors, (46411), 12373 states have internal predecessors, (46411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 46411 transitions. [2022-01-18 14:29:07,176 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 46411 transitions. Word has length 25 [2022-01-18 14:29:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:07,176 INFO L470 AbstractCegarLoop]: Abstraction has 12374 states and 46411 transitions. [2022-01-18 14:29:07,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2022-01-18 14:29:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 46411 transitions. [2022-01-18 14:29:07,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 14:29:07,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:07,202 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:07,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:07,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:07,425 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:07,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1895071392, now seen corresponding path program 23 times [2022-01-18 14:29:07,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:07,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745405184] [2022-01-18 14:29:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:07,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:07,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:07,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745405184] [2022-01-18 14:29:07,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745405184] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:07,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156303533] [2022-01-18 14:29:07,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:29:07,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:07,452 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) [2022-01-18 14:29:07,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 14:29:07,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 14:29:07,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:07,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:07,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:07,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:07,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156303533] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:07,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:07,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 14:29:07,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611036985] [2022-01-18 14:29:07,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:07,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 14:29:07,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 14:29:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 14:29:07,561 INFO L87 Difference]: Start difference. First operand 12374 states and 46411 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2022-01-18 14:29:07,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:07,753 INFO L93 Difference]: Finished difference Result 14384 states and 52212 transitions. [2022-01-18 14:29:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 14:29:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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 [2022-01-18 14:29:07,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:07,816 INFO L225 Difference]: With dead ends: 14384 [2022-01-18 14:29:07,816 INFO L226 Difference]: Without dead ends: 14331 [2022-01-18 14:29:07,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:29:07,817 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:07,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 40 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:29:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14331 states. [2022-01-18 14:29:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14331 to 12343. [2022-01-18 14:29:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12343 states, 12342 states have (on average 3.7488251498946688) internal successors, (46268), 12342 states have internal predecessors, (46268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12343 states to 12343 states and 46268 transitions. [2022-01-18 14:29:08,246 INFO L78 Accepts]: Start accepts. Automaton has 12343 states and 46268 transitions. Word has length 25 [2022-01-18 14:29:08,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:08,246 INFO L470 AbstractCegarLoop]: Abstraction has 12343 states and 46268 transitions. [2022-01-18 14:29:08,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2022-01-18 14:29:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 12343 states and 46268 transitions. [2022-01-18 14:29:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 14:29:08,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:08,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:08,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:08,466 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,SelfDestructingSolverStorable32 [2022-01-18 14:29:08,466 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1021468140, now seen corresponding path program 24 times [2022-01-18 14:29:08,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:08,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202153233] [2022-01-18 14:29:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:08,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:08,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:08,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202153233] [2022-01-18 14:29:08,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202153233] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:08,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153019193] [2022-01-18 14:29:08,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:29:08,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:08,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:08,506 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) [2022-01-18 14:29:08,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 14:29:08,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 14:29:08,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:08,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 14:29:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:08,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:08,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153019193] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:08,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:08,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-01-18 14:29:08,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374167458] [2022-01-18 14:29:08,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:08,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 14:29:08,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:08,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 14:29:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:29:08,682 INFO L87 Difference]: Start difference. First operand 12343 states and 46268 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 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) [2022-01-18 14:29:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:09,047 INFO L93 Difference]: Finished difference Result 15025 states and 53947 transitions. [2022-01-18 14:29:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 14:29:09,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 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 [2022-01-18 14:29:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:09,082 INFO L225 Difference]: With dead ends: 15025 [2022-01-18 14:29:09,082 INFO L226 Difference]: Without dead ends: 14843 [2022-01-18 14:29:09,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2022-01-18 14:29:09,083 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 217 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:09,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 95 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:09,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14843 states. [2022-01-18 14:29:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14843 to 12521. [2022-01-18 14:29:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12521 states, 12520 states have (on average 3.7399361022364217) internal successors, (46824), 12520 states have internal predecessors, (46824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 46824 transitions. [2022-01-18 14:29:09,428 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 46824 transitions. Word has length 25 [2022-01-18 14:29:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:09,428 INFO L470 AbstractCegarLoop]: Abstraction has 12521 states and 46824 transitions. [2022-01-18 14:29:09,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 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) [2022-01-18 14:29:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 46824 transitions. [2022-01-18 14:29:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:09,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:09,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:09,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:09,653 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,SelfDestructingSolverStorable33 [2022-01-18 14:29:09,653 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:09,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:09,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1240654612, now seen corresponding path program 25 times [2022-01-18 14:29:09,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:09,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609220095] [2022-01-18 14:29:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:09,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:09,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:09,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609220095] [2022-01-18 14:29:09,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609220095] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:09,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774044758] [2022-01-18 14:29:09,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:29:09,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:09,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:09,758 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) [2022-01-18 14:29:09,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 14:29:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:09,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:09,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:10,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:10,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774044758] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:10,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:10,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-01-18 14:29:10,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119186234] [2022-01-18 14:29:10,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:10,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:10,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:10,320 INFO L87 Difference]: Start difference. First operand 12521 states and 46824 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:10,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:10,636 INFO L93 Difference]: Finished difference Result 14348 states and 52474 transitions. [2022-01-18 14:29:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:29:10,637 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:10,674 INFO L225 Difference]: With dead ends: 14348 [2022-01-18 14:29:10,675 INFO L226 Difference]: Without dead ends: 14278 [2022-01-18 14:29:10,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:10,675 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 114 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:10,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 703 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14278 states. [2022-01-18 14:29:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14278 to 13277. [2022-01-18 14:29:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13277 states, 13276 states have (on average 3.7333534197047302) internal successors, (49564), 13276 states have internal predecessors, (49564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13277 states to 13277 states and 49564 transitions. [2022-01-18 14:29:11,014 INFO L78 Accepts]: Start accepts. Automaton has 13277 states and 49564 transitions. Word has length 27 [2022-01-18 14:29:11,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:11,015 INFO L470 AbstractCegarLoop]: Abstraction has 13277 states and 49564 transitions. [2022-01-18 14:29:11,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 13277 states and 49564 transitions. [2022-01-18 14:29:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:11,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:11,044 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:11,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:11,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 14:29:11,245 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash -735077948, now seen corresponding path program 26 times [2022-01-18 14:29:11,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:11,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125834044] [2022-01-18 14:29:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:11,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:11,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:11,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125834044] [2022-01-18 14:29:11,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125834044] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:11,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562862898] [2022-01-18 14:29:11,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:29:11,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:11,335 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) [2022-01-18 14:29:11,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 14:29:11,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:29:11,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:11,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:11,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:11,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:11,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562862898] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:11,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:11,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:11,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973868694] [2022-01-18 14:29:11,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:11,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:11,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:11,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:11,763 INFO L87 Difference]: Start difference. First operand 13277 states and 49564 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:12,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:12,081 INFO L93 Difference]: Finished difference Result 14230 states and 52441 transitions. [2022-01-18 14:29:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:12,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:12,123 INFO L225 Difference]: With dead ends: 14230 [2022-01-18 14:29:12,123 INFO L226 Difference]: Without dead ends: 14200 [2022-01-18 14:29:12,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:12,124 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 105 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:12,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 476 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:12,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14200 states. [2022-01-18 14:29:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14200 to 13587. [2022-01-18 14:29:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13587 states, 13586 states have (on average 3.7320771382305313) internal successors, (50704), 13586 states have internal predecessors, (50704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13587 states to 13587 states and 50704 transitions. [2022-01-18 14:29:12,508 INFO L78 Accepts]: Start accepts. Automaton has 13587 states and 50704 transitions. Word has length 27 [2022-01-18 14:29:12,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:12,509 INFO L470 AbstractCegarLoop]: Abstraction has 13587 states and 50704 transitions. [2022-01-18 14:29:12,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 13587 states and 50704 transitions. [2022-01-18 14:29:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:12,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:12,541 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:12,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:12,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:12,755 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:12,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:12,756 INFO L85 PathProgramCache]: Analyzing trace with hash -699772612, now seen corresponding path program 27 times [2022-01-18 14:29:12,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:12,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692119443] [2022-01-18 14:29:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:12,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:12,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:12,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692119443] [2022-01-18 14:29:12,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692119443] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:12,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280390215] [2022-01-18 14:29:12,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:29:12,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:12,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:12,849 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) [2022-01-18 14:29:12,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 14:29:12,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:29:12,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:12,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:12,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:13,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:13,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280390215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:13,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:13,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:13,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884657130] [2022-01-18 14:29:13,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:13,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:13,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:13,334 INFO L87 Difference]: Start difference. First operand 13587 states and 50704 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:13,609 INFO L93 Difference]: Finished difference Result 14461 states and 53364 transitions. [2022-01-18 14:29:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:13,650 INFO L225 Difference]: With dead ends: 14461 [2022-01-18 14:29:13,651 INFO L226 Difference]: Without dead ends: 14431 [2022-01-18 14:29:13,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:13,652 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 98 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:13,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 524 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:13,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14431 states. [2022-01-18 14:29:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14431 to 13866. [2022-01-18 14:29:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13866 states, 13865 states have (on average 3.7306887847097006) internal successors, (51726), 13865 states have internal predecessors, (51726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13866 states to 13866 states and 51726 transitions. [2022-01-18 14:29:14,004 INFO L78 Accepts]: Start accepts. Automaton has 13866 states and 51726 transitions. Word has length 27 [2022-01-18 14:29:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:14,004 INFO L470 AbstractCegarLoop]: Abstraction has 13866 states and 51726 transitions. [2022-01-18 14:29:14,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 13866 states and 51726 transitions. [2022-01-18 14:29:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:14,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:14,028 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:14,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 14:29:14,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 14:29:14,229 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:14,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1612841472, now seen corresponding path program 28 times [2022-01-18 14:29:14,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:14,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295044168] [2022-01-18 14:29:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:14,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:14,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:14,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295044168] [2022-01-18 14:29:14,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295044168] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:14,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112549376] [2022-01-18 14:29:14,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:29:14,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:14,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:14,307 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) [2022-01-18 14:29:14,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 14:29:14,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:29:14,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:14,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:14,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:14,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:14,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112549376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:14,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:14,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:14,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287682428] [2022-01-18 14:29:14,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:14,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:14,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:14,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:14,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:14,747 INFO L87 Difference]: Start difference. First operand 13866 states and 51726 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:15,118 INFO L93 Difference]: Finished difference Result 14772 states and 54367 transitions. [2022-01-18 14:29:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:15,119 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:15,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:15,152 INFO L225 Difference]: With dead ends: 14772 [2022-01-18 14:29:15,153 INFO L226 Difference]: Without dead ends: 14726 [2022-01-18 14:29:15,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:15,153 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 105 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:15,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 476 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14726 states. [2022-01-18 14:29:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14726 to 14096. [2022-01-18 14:29:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14096 states, 14095 states have (on average 3.7281305427456544) internal successors, (52548), 14095 states have internal predecessors, (52548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14096 states to 14096 states and 52548 transitions. [2022-01-18 14:29:15,415 INFO L78 Accepts]: Start accepts. Automaton has 14096 states and 52548 transitions. Word has length 27 [2022-01-18 14:29:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:15,415 INFO L470 AbstractCegarLoop]: Abstraction has 14096 states and 52548 transitions. [2022-01-18 14:29:15,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 14096 states and 52548 transitions. [2022-01-18 14:29:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:15,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:15,443 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:15,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 14:29:15,644 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,SelfDestructingSolverStorable37 [2022-01-18 14:29:15,644 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1062035200, now seen corresponding path program 29 times [2022-01-18 14:29:15,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:15,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793076810] [2022-01-18 14:29:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:15,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:15,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:15,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793076810] [2022-01-18 14:29:15,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793076810] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:15,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329110022] [2022-01-18 14:29:15,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:29:15,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:15,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:15,738 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) [2022-01-18 14:29:15,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 14:29:15,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:29:15,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:15,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:15,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:16,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:16,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329110022] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:16,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:16,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-01-18 14:29:16,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868108722] [2022-01-18 14:29:16,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:16,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:16,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:16,182 INFO L87 Difference]: Start difference. First operand 14096 states and 52548 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:16,586 INFO L93 Difference]: Finished difference Result 15755 states and 57606 transitions. [2022-01-18 14:29:16,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:29:16,587 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:16,626 INFO L225 Difference]: With dead ends: 15755 [2022-01-18 14:29:16,626 INFO L226 Difference]: Without dead ends: 15715 [2022-01-18 14:29:16,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:16,627 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 120 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:16,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 788 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:29:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15715 states. [2022-01-18 14:29:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15715 to 14639. [2022-01-18 14:29:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14639 states, 14638 states have (on average 3.7261237874026505) internal successors, (54543), 14638 states have internal predecessors, (54543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14639 states to 14639 states and 54543 transitions. [2022-01-18 14:29:17,038 INFO L78 Accepts]: Start accepts. Automaton has 14639 states and 54543 transitions. Word has length 27 [2022-01-18 14:29:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:17,038 INFO L470 AbstractCegarLoop]: Abstraction has 14639 states and 54543 transitions. [2022-01-18 14:29:17,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 14639 states and 54543 transitions. [2022-01-18 14:29:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:17,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:17,065 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:17,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:17,266 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,SelfDestructingSolverStorable38 [2022-01-18 14:29:17,266 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:17,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1241990722, now seen corresponding path program 30 times [2022-01-18 14:29:17,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:17,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994569624] [2022-01-18 14:29:17,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:17,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:17,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:17,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994569624] [2022-01-18 14:29:17,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994569624] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:17,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551137218] [2022-01-18 14:29:17,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:29:17,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:17,359 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) [2022-01-18 14:29:17,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 14:29:17,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 14:29:17,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:17,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:17,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:17,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:17,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551137218] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:17,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:17,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683764566] [2022-01-18 14:29:17,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:17,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:17,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:17,817 INFO L87 Difference]: Start difference. First operand 14639 states and 54543 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:18,103 INFO L93 Difference]: Finished difference Result 15284 states and 56431 transitions. [2022-01-18 14:29:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:18,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:18,153 INFO L225 Difference]: With dead ends: 15284 [2022-01-18 14:29:18,153 INFO L226 Difference]: Without dead ends: 15139 [2022-01-18 14:29:18,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:18,154 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 82 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:18,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 501 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15139 states. [2022-01-18 14:29:18,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15139 to 14813. [2022-01-18 14:29:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14813 states, 14812 states have (on average 3.7248177153659197) internal successors, (55172), 14812 states have internal predecessors, (55172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14813 states to 14813 states and 55172 transitions. [2022-01-18 14:29:18,606 INFO L78 Accepts]: Start accepts. Automaton has 14813 states and 55172 transitions. Word has length 27 [2022-01-18 14:29:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:18,606 INFO L470 AbstractCegarLoop]: Abstraction has 14813 states and 55172 transitions. [2022-01-18 14:29:18,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 14813 states and 55172 transitions. [2022-01-18 14:29:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:18,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:18,635 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:18,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-18 14:29:18,835 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,SelfDestructingSolverStorable39 [2022-01-18 14:29:18,835 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1777023434, now seen corresponding path program 31 times [2022-01-18 14:29:18,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:18,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749643527] [2022-01-18 14:29:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:18,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:18,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:18,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749643527] [2022-01-18 14:29:18,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749643527] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:18,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241220509] [2022-01-18 14:29:18,907 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:29:18,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:18,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:18,908 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) [2022-01-18 14:29:18,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 14:29:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:18,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:18,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:19,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:19,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241220509] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:19,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:19,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:19,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545725451] [2022-01-18 14:29:19,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:19,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:19,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:19,344 INFO L87 Difference]: Start difference. First operand 14813 states and 55172 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:19,603 INFO L93 Difference]: Finished difference Result 15596 states and 57493 transitions. [2022-01-18 14:29:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:19,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:19,642 INFO L225 Difference]: With dead ends: 15596 [2022-01-18 14:29:19,642 INFO L226 Difference]: Without dead ends: 15566 [2022-01-18 14:29:19,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:19,642 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 95 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:19,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 566 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15566 states. [2022-01-18 14:29:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15566 to 14939. [2022-01-18 14:29:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14939 states, 14938 states have (on average 3.7268710670772527) internal successors, (55672), 14938 states have internal predecessors, (55672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 55672 transitions. [2022-01-18 14:29:20,027 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 55672 transitions. Word has length 27 [2022-01-18 14:29:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:20,027 INFO L470 AbstractCegarLoop]: Abstraction has 14939 states and 55672 transitions. [2022-01-18 14:29:20,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 55672 transitions. [2022-01-18 14:29:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:20,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:20,054 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:20,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:20,254 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 [2022-01-18 14:29:20,254 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1260332730, now seen corresponding path program 32 times [2022-01-18 14:29:20,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:20,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727626059] [2022-01-18 14:29:20,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:20,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:20,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:20,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727626059] [2022-01-18 14:29:20,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727626059] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:20,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879669701] [2022-01-18 14:29:20,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:29:20,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:20,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:20,336 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) [2022-01-18 14:29:20,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 14:29:20,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:29:20,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:20,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:20,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:20,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:20,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879669701] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:20,702 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:20,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:20,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821455858] [2022-01-18 14:29:20,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:20,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:20,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:20,703 INFO L87 Difference]: Start difference. First operand 14939 states and 55672 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:20,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:20,965 INFO L93 Difference]: Finished difference Result 15554 states and 57492 transitions. [2022-01-18 14:29:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:20,965 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:20,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:21,004 INFO L225 Difference]: With dead ends: 15554 [2022-01-18 14:29:21,004 INFO L226 Difference]: Without dead ends: 15466 [2022-01-18 14:29:21,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:21,005 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 68 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:21,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 512 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2022-01-18 14:29:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 15165. [2022-01-18 14:29:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 15164 states have (on average 3.7211158005803218) internal successors, (56427), 15164 states have internal predecessors, (56427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:21,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 56427 transitions. [2022-01-18 14:29:21,371 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 56427 transitions. Word has length 27 [2022-01-18 14:29:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:21,371 INFO L470 AbstractCegarLoop]: Abstraction has 15165 states and 56427 transitions. [2022-01-18 14:29:21,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 56427 transitions. [2022-01-18 14:29:21,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:21,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:21,397 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:21,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 14:29:21,597 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 [2022-01-18 14:29:21,597 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:21,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:21,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1455016062, now seen corresponding path program 33 times [2022-01-18 14:29:21,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:21,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049539551] [2022-01-18 14:29:21,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:21,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:21,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049539551] [2022-01-18 14:29:21,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049539551] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658526200] [2022-01-18 14:29:21,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:29:21,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:21,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:21,689 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) [2022-01-18 14:29:21,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 14:29:21,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 14:29:21,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:21,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:21,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:21,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:22,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658526200] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:22,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:22,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-01-18 14:29:22,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718240023] [2022-01-18 14:29:22,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:22,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:22,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:22,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:22,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:22,058 INFO L87 Difference]: Start difference. First operand 15165 states and 56427 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:22,447 INFO L93 Difference]: Finished difference Result 17763 states and 64869 transitions. [2022-01-18 14:29:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:29:22,448 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:22,504 INFO L225 Difference]: With dead ends: 17763 [2022-01-18 14:29:22,504 INFO L226 Difference]: Without dead ends: 17647 [2022-01-18 14:29:22,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:22,504 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 105 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:22,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 678 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17647 states. [2022-01-18 14:29:22,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17647 to 16074. [2022-01-18 14:29:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16074 states, 16073 states have (on average 3.7375101101225656) internal successors, (60073), 16073 states have internal predecessors, (60073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16074 states to 16074 states and 60073 transitions. [2022-01-18 14:29:22,922 INFO L78 Accepts]: Start accepts. Automaton has 16074 states and 60073 transitions. Word has length 27 [2022-01-18 14:29:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:22,923 INFO L470 AbstractCegarLoop]: Abstraction has 16074 states and 60073 transitions. [2022-01-18 14:29:22,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 16074 states and 60073 transitions. [2022-01-18 14:29:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:22,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:22,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:22,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 14:29:23,153 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 [2022-01-18 14:29:23,153 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1151333050, now seen corresponding path program 34 times [2022-01-18 14:29:23,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:23,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836430295] [2022-01-18 14:29:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:23,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:23,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:23,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836430295] [2022-01-18 14:29:23,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836430295] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:23,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570131765] [2022-01-18 14:29:23,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:29:23,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:23,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:23,241 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) [2022-01-18 14:29:23,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 14:29:23,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:29:23,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:23,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:23,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:23,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:23,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570131765] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:23,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:23,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:23,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31828720] [2022-01-18 14:29:23,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:23,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:23,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:23,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:23,690 INFO L87 Difference]: Start difference. First operand 16074 states and 60073 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:23,965 INFO L93 Difference]: Finished difference Result 16809 states and 62274 transitions. [2022-01-18 14:29:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:24,012 INFO L225 Difference]: With dead ends: 16809 [2022-01-18 14:29:24,013 INFO L226 Difference]: Without dead ends: 16719 [2022-01-18 14:29:24,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:24,013 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 82 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:24,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 506 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16719 states. [2022-01-18 14:29:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 16310. [2022-01-18 14:29:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16310 states, 16309 states have (on average 3.7376295297075233) internal successors, (60957), 16309 states have internal predecessors, (60957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16310 states to 16310 states and 60957 transitions. [2022-01-18 14:29:24,318 INFO L78 Accepts]: Start accepts. Automaton has 16310 states and 60957 transitions. Word has length 27 [2022-01-18 14:29:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:24,319 INFO L470 AbstractCegarLoop]: Abstraction has 16310 states and 60957 transitions. [2022-01-18 14:29:24,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 16310 states and 60957 transitions. [2022-01-18 14:29:24,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:24,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:24,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:24,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-01-18 14:29:24,548 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 [2022-01-18 14:29:24,548 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:24,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1987580874, now seen corresponding path program 35 times [2022-01-18 14:29:24,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:24,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945097150] [2022-01-18 14:29:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:24,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:24,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945097150] [2022-01-18 14:29:24,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945097150] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977726284] [2022-01-18 14:29:24,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:29:24,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:24,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:24,625 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) [2022-01-18 14:29:24,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 14:29:24,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 14:29:24,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:24,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:24,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:24,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:25,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977726284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:25,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:25,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:25,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998941870] [2022-01-18 14:29:25,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:25,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:25,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:25,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:25,041 INFO L87 Difference]: Start difference. First operand 16310 states and 60957 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:25,288 INFO L93 Difference]: Finished difference Result 17303 states and 63989 transitions. [2022-01-18 14:29:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:25,332 INFO L225 Difference]: With dead ends: 17303 [2022-01-18 14:29:25,332 INFO L226 Difference]: Without dead ends: 17273 [2022-01-18 14:29:25,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:25,333 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 95 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:25,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 553 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17273 states. [2022-01-18 14:29:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17273 to 16496. [2022-01-18 14:29:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16496 states, 16495 states have (on average 3.7399818126705062) internal successors, (61691), 16495 states have internal predecessors, (61691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16496 states to 16496 states and 61691 transitions. [2022-01-18 14:29:25,674 INFO L78 Accepts]: Start accepts. Automaton has 16496 states and 61691 transitions. Word has length 27 [2022-01-18 14:29:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:25,674 INFO L470 AbstractCegarLoop]: Abstraction has 16496 states and 61691 transitions. [2022-01-18 14:29:25,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 16496 states and 61691 transitions. [2022-01-18 14:29:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:25,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:25,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:25,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 14:29:25,904 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 [2022-01-18 14:29:25,905 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:25,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1650438726, now seen corresponding path program 36 times [2022-01-18 14:29:25,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:25,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415507236] [2022-01-18 14:29:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:25,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:25,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:25,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415507236] [2022-01-18 14:29:25,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415507236] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:25,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796699046] [2022-01-18 14:29:25,971 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:29:25,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:25,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:25,972 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) [2022-01-18 14:29:25,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 14:29:26,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 14:29:26,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:26,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:26,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:26,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:26,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796699046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:26,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:26,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:26,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938325572] [2022-01-18 14:29:26,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:26,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:26,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:26,347 INFO L87 Difference]: Start difference. First operand 16496 states and 61691 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:26,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:26,558 INFO L93 Difference]: Finished difference Result 17081 states and 63420 transitions. [2022-01-18 14:29:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:26,558 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:26,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:26,600 INFO L225 Difference]: With dead ends: 17081 [2022-01-18 14:29:26,600 INFO L226 Difference]: Without dead ends: 17015 [2022-01-18 14:29:26,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:26,601 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 82 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:26,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 416 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:29:26,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17015 states. [2022-01-18 14:29:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17015 to 16690. [2022-01-18 14:29:26,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16690 states, 16689 states have (on average 3.7389897537300016) internal successors, (62400), 16689 states have internal predecessors, (62400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16690 states to 16690 states and 62400 transitions. [2022-01-18 14:29:26,966 INFO L78 Accepts]: Start accepts. Automaton has 16690 states and 62400 transitions. Word has length 27 [2022-01-18 14:29:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:26,966 INFO L470 AbstractCegarLoop]: Abstraction has 16690 states and 62400 transitions. [2022-01-18 14:29:26,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 16690 states and 62400 transitions. [2022-01-18 14:29:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:26,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:27,000 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:27,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 14:29:27,200 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 [2022-01-18 14:29:27,200 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash -314976114, now seen corresponding path program 37 times [2022-01-18 14:29:27,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:27,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639690467] [2022-01-18 14:29:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:27,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:27,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:27,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639690467] [2022-01-18 14:29:27,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639690467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:27,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409574140] [2022-01-18 14:29:27,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:29:27,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:27,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:27,290 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) [2022-01-18 14:29:27,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 14:29:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:27,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:27,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:27,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:27,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409574140] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:27,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:27,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:27,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320741750] [2022-01-18 14:29:27,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:27,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:27,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:27,681 INFO L87 Difference]: Start difference. First operand 16690 states and 62400 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:28,009 INFO L93 Difference]: Finished difference Result 17364 states and 64430 transitions. [2022-01-18 14:29:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:28,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:28,066 INFO L225 Difference]: With dead ends: 17364 [2022-01-18 14:29:28,066 INFO L226 Difference]: Without dead ends: 17298 [2022-01-18 14:29:28,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:28,066 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 69 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:28,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 676 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:28,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2022-01-18 14:29:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 16904. [2022-01-18 14:29:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16904 states, 16903 states have (on average 3.7405194344199253) internal successors, (63226), 16903 states have internal predecessors, (63226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16904 states to 16904 states and 63226 transitions. [2022-01-18 14:29:28,459 INFO L78 Accepts]: Start accepts. Automaton has 16904 states and 63226 transitions. Word has length 27 [2022-01-18 14:29:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:28,459 INFO L470 AbstractCegarLoop]: Abstraction has 16904 states and 63226 transitions. [2022-01-18 14:29:28,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 16904 states and 63226 transitions. [2022-01-18 14:29:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:28,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:28,493 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:28,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:28,693 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 [2022-01-18 14:29:28,693 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 152422742, now seen corresponding path program 38 times [2022-01-18 14:29:28,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:28,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732591347] [2022-01-18 14:29:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:28,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:28,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:28,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732591347] [2022-01-18 14:29:28,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732591347] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:28,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87291977] [2022-01-18 14:29:28,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:29:28,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:28,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:28,779 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) [2022-01-18 14:29:28,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 14:29:28,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:29:28,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:28,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:28,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:29,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:29,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87291977] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:29,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:29,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:29,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468647336] [2022-01-18 14:29:29,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:29,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:29,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:29,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:29,171 INFO L87 Difference]: Start difference. First operand 16904 states and 63226 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:29,470 INFO L93 Difference]: Finished difference Result 17887 states and 66224 transitions. [2022-01-18 14:29:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:29,470 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:29,524 INFO L225 Difference]: With dead ends: 17887 [2022-01-18 14:29:29,525 INFO L226 Difference]: Without dead ends: 17857 [2022-01-18 14:29:29,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:29,525 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 90 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:29,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 558 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17857 states. [2022-01-18 14:29:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17857 to 17061. [2022-01-18 14:29:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17061 states, 17060 states have (on average 3.7441383352872215) internal successors, (63875), 17060 states have internal predecessors, (63875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17061 states to 17061 states and 63875 transitions. [2022-01-18 14:29:29,940 INFO L78 Accepts]: Start accepts. Automaton has 17061 states and 63875 transitions. Word has length 27 [2022-01-18 14:29:29,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:29,940 INFO L470 AbstractCegarLoop]: Abstraction has 17061 states and 63875 transitions. [2022-01-18 14:29:29,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 17061 states and 63875 transitions. [2022-01-18 14:29:29,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:29,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:29,971 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:29,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 14:29:30,172 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 [2022-01-18 14:29:30,172 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1017639438, now seen corresponding path program 39 times [2022-01-18 14:29:30,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:30,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610630326] [2022-01-18 14:29:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:30,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:30,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:30,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610630326] [2022-01-18 14:29:30,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610630326] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:30,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911849539] [2022-01-18 14:29:30,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:29:30,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:30,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:30,244 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) [2022-01-18 14:29:30,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 14:29:30,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 14:29:30,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:30,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:30,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:30,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:29:30,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911849539] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:30,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:30,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:30,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009341527] [2022-01-18 14:29:30,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:30,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:30,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:30,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:30,604 INFO L87 Difference]: Start difference. First operand 17061 states and 63875 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:30,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:30,899 INFO L93 Difference]: Finished difference Result 18468 states and 68107 transitions. [2022-01-18 14:29:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:30,952 INFO L225 Difference]: With dead ends: 18468 [2022-01-18 14:29:30,952 INFO L226 Difference]: Without dead ends: 18406 [2022-01-18 14:29:30,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:30,952 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 89 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:30,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 586 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18406 states. [2022-01-18 14:29:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18406 to 17337. [2022-01-18 14:29:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17337 states, 17336 states have (on average 3.749134748500231) internal successors, (64995), 17336 states have internal predecessors, (64995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17337 states to 17337 states and 64995 transitions. [2022-01-18 14:29:31,335 INFO L78 Accepts]: Start accepts. Automaton has 17337 states and 64995 transitions. Word has length 27 [2022-01-18 14:29:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:31,335 INFO L470 AbstractCegarLoop]: Abstraction has 17337 states and 64995 transitions. [2022-01-18 14:29:31,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 17337 states and 64995 transitions. [2022-01-18 14:29:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:31,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:31,372 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:31,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:31,572 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 [2022-01-18 14:29:31,573 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2082462406, now seen corresponding path program 40 times [2022-01-18 14:29:31,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:31,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058224932] [2022-01-18 14:29:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:31,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:31,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:31,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058224932] [2022-01-18 14:29:31,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058224932] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:31,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258718791] [2022-01-18 14:29:31,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:29:31,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:31,659 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) [2022-01-18 14:29:31,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 14:29:31,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:29:31,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:31,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:31,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:31,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:32,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258718791] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:32,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:32,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:32,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80388683] [2022-01-18 14:29:32,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:32,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:32,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:32,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:32,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:32,040 INFO L87 Difference]: Start difference. First operand 17337 states and 64995 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:32,390 INFO L93 Difference]: Finished difference Result 18221 states and 67611 transitions. [2022-01-18 14:29:32,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:32,390 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:32,444 INFO L225 Difference]: With dead ends: 18221 [2022-01-18 14:29:32,445 INFO L226 Difference]: Without dead ends: 18191 [2022-01-18 14:29:32,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:32,445 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 90 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:32,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 712 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18191 states. [2022-01-18 14:29:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18191 to 17491. [2022-01-18 14:29:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17491 states, 17490 states have (on average 3.750371640937679) internal successors, (65594), 17490 states have internal predecessors, (65594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17491 states to 17491 states and 65594 transitions. [2022-01-18 14:29:32,887 INFO L78 Accepts]: Start accepts. Automaton has 17491 states and 65594 transitions. Word has length 27 [2022-01-18 14:29:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:32,887 INFO L470 AbstractCegarLoop]: Abstraction has 17491 states and 65594 transitions. [2022-01-18 14:29:32,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 17491 states and 65594 transitions. [2022-01-18 14:29:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:32,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:32,925 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:32,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:33,126 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 [2022-01-18 14:29:33,126 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:33,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash -783265718, now seen corresponding path program 41 times [2022-01-18 14:29:33,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:33,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063629421] [2022-01-18 14:29:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:33,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:33,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:33,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063629421] [2022-01-18 14:29:33,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063629421] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:33,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824408177] [2022-01-18 14:29:33,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:29:33,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:33,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:33,206 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) [2022-01-18 14:29:33,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 14:29:33,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:29:33,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:33,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:33,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:33,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:33,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824408177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:33,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:33,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 14:29:33,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685561206] [2022-01-18 14:29:33,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:33,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 14:29:33,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:33,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 14:29:33,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:33,616 INFO L87 Difference]: Start difference. First operand 17491 states and 65594 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:33,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:33,943 INFO L93 Difference]: Finished difference Result 18204 states and 67682 transitions. [2022-01-18 14:29:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:33,943 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:33,996 INFO L225 Difference]: With dead ends: 18204 [2022-01-18 14:29:33,996 INFO L226 Difference]: Without dead ends: 18099 [2022-01-18 14:29:33,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:29:33,997 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 88 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:33,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 630 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18099 states. [2022-01-18 14:29:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18099 to 17688. [2022-01-18 14:29:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17688 states, 17687 states have (on average 3.748289704302595) internal successors, (66296), 17687 states have internal predecessors, (66296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 66296 transitions. [2022-01-18 14:29:34,402 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 66296 transitions. Word has length 27 [2022-01-18 14:29:34,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:34,402 INFO L470 AbstractCegarLoop]: Abstraction has 17688 states and 66296 transitions. [2022-01-18 14:29:34,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 66296 transitions. [2022-01-18 14:29:34,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:34,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:34,438 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:34,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 14:29:34,639 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 [2022-01-18 14:29:34,639 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:34,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1705053426, now seen corresponding path program 42 times [2022-01-18 14:29:34,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:34,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911501329] [2022-01-18 14:29:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:34,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:34,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:34,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911501329] [2022-01-18 14:29:34,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911501329] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:34,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878169206] [2022-01-18 14:29:34,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:29:34,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:34,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:34,719 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) [2022-01-18 14:29:34,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 14:29:34,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:29:34,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:34,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:34,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:34,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:35,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878169206] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:35,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:35,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-01-18 14:29:35,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578051993] [2022-01-18 14:29:35,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:35,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:35,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:35,110 INFO L87 Difference]: Start difference. First operand 17688 states and 66296 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:35,507 INFO L93 Difference]: Finished difference Result 20124 states and 73900 transitions. [2022-01-18 14:29:35,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:29:35,508 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:35,566 INFO L225 Difference]: With dead ends: 20124 [2022-01-18 14:29:35,566 INFO L226 Difference]: Without dead ends: 20072 [2022-01-18 14:29:35,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:35,566 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 113 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:35,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 933 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:29:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20072 states. [2022-01-18 14:29:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20072 to 18185. [2022-01-18 14:29:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18185 states, 18184 states have (on average 3.7596238451385835) internal successors, (68365), 18184 states have internal predecessors, (68365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18185 states to 18185 states and 68365 transitions. [2022-01-18 14:29:36,051 INFO L78 Accepts]: Start accepts. Automaton has 18185 states and 68365 transitions. Word has length 27 [2022-01-18 14:29:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:36,052 INFO L470 AbstractCegarLoop]: Abstraction has 18185 states and 68365 transitions. [2022-01-18 14:29:36,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 18185 states and 68365 transitions. [2022-01-18 14:29:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:36,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:36,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:36,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-18 14:29:36,291 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 [2022-01-18 14:29:36,291 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:36,291 INFO L85 PathProgramCache]: Analyzing trace with hash 469214414, now seen corresponding path program 43 times [2022-01-18 14:29:36,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:36,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117394284] [2022-01-18 14:29:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:36,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:36,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:36,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117394284] [2022-01-18 14:29:36,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117394284] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:36,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921934080] [2022-01-18 14:29:36,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:29:36,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:36,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:36,388 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) [2022-01-18 14:29:36,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 14:29:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:36,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:36,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:36,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:36,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921934080] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:36,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:36,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 14:29:36,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743973086] [2022-01-18 14:29:36,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:36,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:36,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:36,831 INFO L87 Difference]: Start difference. First operand 18185 states and 68365 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:37,178 INFO L93 Difference]: Finished difference Result 18966 states and 70681 transitions. [2022-01-18 14:29:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-18 14:29:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:37,229 INFO L225 Difference]: With dead ends: 18966 [2022-01-18 14:29:37,229 INFO L226 Difference]: Without dead ends: 18936 [2022-01-18 14:29:37,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:29:37,230 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 98 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:37,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 504 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18936 states. [2022-01-18 14:29:37,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18936 to 18308. [2022-01-18 14:29:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18308 states, 18307 states have (on average 3.760692631233954) internal successors, (68847), 18307 states have internal predecessors, (68847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18308 states to 18308 states and 68847 transitions. [2022-01-18 14:29:37,691 INFO L78 Accepts]: Start accepts. Automaton has 18308 states and 68847 transitions. Word has length 27 [2022-01-18 14:29:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:37,692 INFO L470 AbstractCegarLoop]: Abstraction has 18308 states and 68847 transitions. [2022-01-18 14:29:37,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 18308 states and 68847 transitions. [2022-01-18 14:29:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:37,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:37,732 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:37,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 14:29:37,933 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 [2022-01-18 14:29:37,934 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:37,934 INFO L85 PathProgramCache]: Analyzing trace with hash 475835066, now seen corresponding path program 44 times [2022-01-18 14:29:37,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:37,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805266733] [2022-01-18 14:29:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:37,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:38,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:38,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805266733] [2022-01-18 14:29:38,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805266733] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:38,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998955571] [2022-01-18 14:29:38,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:29:38,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:38,033 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) [2022-01-18 14:29:38,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 14:29:38,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:29:38,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:38,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:38,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:38,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:38,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998955571] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:38,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:38,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 14:29:38,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988790418] [2022-01-18 14:29:38,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:38,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:38,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:38,466 INFO L87 Difference]: Start difference. First operand 18308 states and 68847 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:38,776 INFO L93 Difference]: Finished difference Result 18865 states and 70515 transitions. [2022-01-18 14:29:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:38,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-18 14:29:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:38,829 INFO L225 Difference]: With dead ends: 18865 [2022-01-18 14:29:38,830 INFO L226 Difference]: Without dead ends: 18797 [2022-01-18 14:29:38,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:29:38,830 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 67 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:38,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 566 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18797 states. [2022-01-18 14:29:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18797 to 18476. [2022-01-18 14:29:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18476 states, 18475 states have (on average 3.7612449255751015) internal successors, (69489), 18475 states have internal predecessors, (69489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18476 states to 18476 states and 69489 transitions. [2022-01-18 14:29:39,376 INFO L78 Accepts]: Start accepts. Automaton has 18476 states and 69489 transitions. Word has length 27 [2022-01-18 14:29:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:39,376 INFO L470 AbstractCegarLoop]: Abstraction has 18476 states and 69489 transitions. [2022-01-18 14:29:39,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 18476 states and 69489 transitions. [2022-01-18 14:29:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:39,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:39,410 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:39,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-01-18 14:29:39,611 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 [2022-01-18 14:29:39,611 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1506518146, now seen corresponding path program 45 times [2022-01-18 14:29:39,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:39,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491599133] [2022-01-18 14:29:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:39,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:39,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:39,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491599133] [2022-01-18 14:29:39,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491599133] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:39,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127247355] [2022-01-18 14:29:39,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:29:39,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:39,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:39,698 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) [2022-01-18 14:29:39,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 14:29:39,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 14:29:39,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:39,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:39,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:39,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:40,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127247355] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:40,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:40,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 14:29:40,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813706524] [2022-01-18 14:29:40,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:40,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 14:29:40,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:40,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 14:29:40,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:29:40,093 INFO L87 Difference]: Start difference. First operand 18476 states and 69489 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:40,524 INFO L93 Difference]: Finished difference Result 20566 states and 75847 transitions. [2022-01-18 14:29:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:29:40,525 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-18 14:29:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:40,583 INFO L225 Difference]: With dead ends: 20566 [2022-01-18 14:29:40,583 INFO L226 Difference]: Without dead ends: 20536 [2022-01-18 14:29:40,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:29:40,583 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 103 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:40,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1067 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:29:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20536 states. [2022-01-18 14:29:41,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20536 to 18884. [2022-01-18 14:29:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18884 states, 18883 states have (on average 3.769157443202881) internal successors, (71173), 18883 states have internal predecessors, (71173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18884 states to 18884 states and 71173 transitions. [2022-01-18 14:29:41,110 INFO L78 Accepts]: Start accepts. Automaton has 18884 states and 71173 transitions. Word has length 27 [2022-01-18 14:29:41,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:41,110 INFO L470 AbstractCegarLoop]: Abstraction has 18884 states and 71173 transitions. [2022-01-18 14:29:41,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 18884 states and 71173 transitions. [2022-01-18 14:29:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:41,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:41,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:41,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:41,346 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 [2022-01-18 14:29:41,347 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:41,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1512496010, now seen corresponding path program 46 times [2022-01-18 14:29:41,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005650439] [2022-01-18 14:29:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:41,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:41,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005650439] [2022-01-18 14:29:41,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005650439] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:41,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992579997] [2022-01-18 14:29:41,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:29:41,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:41,431 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) [2022-01-18 14:29:41,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 14:29:41,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:29:41,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:41,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:41,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:41,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:41,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992579997] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:41,846 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:41,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 14:29:41,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678728883] [2022-01-18 14:29:41,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:41,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:41,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:41,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:41,848 INFO L87 Difference]: Start difference. First operand 18884 states and 71173 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:42,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:42,224 INFO L93 Difference]: Finished difference Result 19698 states and 73472 transitions. [2022-01-18 14:29:42,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:42,224 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-18 14:29:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:42,280 INFO L225 Difference]: With dead ends: 19698 [2022-01-18 14:29:42,280 INFO L226 Difference]: Without dead ends: 19642 [2022-01-18 14:29:42,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:29:42,281 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 99 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:42,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 542 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19642 states. [2022-01-18 14:29:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19642 to 19076. [2022-01-18 14:29:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19076 states, 19075 states have (on average 3.769908256880734) internal successors, (71911), 19075 states have internal predecessors, (71911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19076 states to 19076 states and 71911 transitions. [2022-01-18 14:29:42,772 INFO L78 Accepts]: Start accepts. Automaton has 19076 states and 71911 transitions. Word has length 27 [2022-01-18 14:29:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:42,772 INFO L470 AbstractCegarLoop]: Abstraction has 19076 states and 71911 transitions. [2022-01-18 14:29:42,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 19076 states and 71911 transitions. [2022-01-18 14:29:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:42,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:42,805 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:42,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-18 14:29:43,007 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 [2022-01-18 14:29:43,007 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1415860474, now seen corresponding path program 47 times [2022-01-18 14:29:43,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:43,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597410680] [2022-01-18 14:29:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:43,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:43,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:43,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597410680] [2022-01-18 14:29:43,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597410680] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:43,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140341523] [2022-01-18 14:29:43,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:29:43,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:43,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:43,104 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) [2022-01-18 14:29:43,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 14:29:43,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:29:43,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:43,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:43,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:43,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:29:43,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140341523] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:43,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:43,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 14:29:43,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843892276] [2022-01-18 14:29:43,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:43,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:43,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:43,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:43,532 INFO L87 Difference]: Start difference. First operand 19076 states and 71911 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:44,069 INFO L93 Difference]: Finished difference Result 20110 states and 75050 transitions. [2022-01-18 14:29:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:44,125 INFO L225 Difference]: With dead ends: 20110 [2022-01-18 14:29:44,125 INFO L226 Difference]: Without dead ends: 20080 [2022-01-18 14:29:44,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:29:44,125 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 94 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:44,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 628 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:29:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20080 states. [2022-01-18 14:29:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20080 to 19275. [2022-01-18 14:29:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19275 states, 19274 states have (on average 3.7716094220193006) internal successors, (72694), 19274 states have internal predecessors, (72694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19275 states to 19275 states and 72694 transitions. [2022-01-18 14:29:44,655 INFO L78 Accepts]: Start accepts. Automaton has 19275 states and 72694 transitions. Word has length 27 [2022-01-18 14:29:44,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:44,656 INFO L470 AbstractCegarLoop]: Abstraction has 19275 states and 72694 transitions. [2022-01-18 14:29:44,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:44,656 INFO L276 IsEmpty]: Start isEmpty. Operand 19275 states and 72694 transitions. [2022-01-18 14:29:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:44,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:44,691 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:44,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:44,891 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 [2022-01-18 14:29:44,891 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1723053450, now seen corresponding path program 48 times [2022-01-18 14:29:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:44,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513946039] [2022-01-18 14:29:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:44,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:44,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:44,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513946039] [2022-01-18 14:29:44,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513946039] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:44,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636282134] [2022-01-18 14:29:44,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:29:44,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:44,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:44,976 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) [2022-01-18 14:29:44,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 14:29:44,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:29:44,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:44,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:45,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:45,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 14:29:45,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636282134] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:45,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:45,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 14:29:45,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337503203] [2022-01-18 14:29:45,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:45,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:29:45,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:29:45,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:29:45,312 INFO L87 Difference]: Start difference. First operand 19275 states and 72694 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:45,627 INFO L93 Difference]: Finished difference Result 20326 states and 75853 transitions. [2022-01-18 14:29:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:45,627 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 14:29:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:45,680 INFO L225 Difference]: With dead ends: 20326 [2022-01-18 14:29:45,680 INFO L226 Difference]: Without dead ends: 20231 [2022-01-18 14:29:45,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:29:45,680 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 96 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:45,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 599 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20231 states. [2022-01-18 14:29:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20231 to 19566. [2022-01-18 14:29:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19566 states, 19565 states have (on average 3.773115256836187) internal successors, (73821), 19565 states have internal predecessors, (73821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19566 states to 19566 states and 73821 transitions. [2022-01-18 14:29:46,155 INFO L78 Accepts]: Start accepts. Automaton has 19566 states and 73821 transitions. Word has length 27 [2022-01-18 14:29:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:46,155 INFO L470 AbstractCegarLoop]: Abstraction has 19566 states and 73821 transitions. [2022-01-18 14:29:46,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 19566 states and 73821 transitions. [2022-01-18 14:29:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:46,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:46,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:46,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-01-18 14:29:46,390 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 [2022-01-18 14:29:46,391 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:46,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1507328886, now seen corresponding path program 49 times [2022-01-18 14:29:46,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:46,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998956489] [2022-01-18 14:29:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:46,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:46,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:46,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998956489] [2022-01-18 14:29:46,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998956489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:46,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648410622] [2022-01-18 14:29:46,495 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:29:46,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:46,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:46,496 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) [2022-01-18 14:29:46,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 14:29:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:46,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:46,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:46,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:46,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648410622] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:46,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:46,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2022-01-18 14:29:46,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821706812] [2022-01-18 14:29:46,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:46,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 14:29:46,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:46,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 14:29:46,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:29:46,880 INFO L87 Difference]: Start difference. First operand 19566 states and 73821 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:47,347 INFO L93 Difference]: Finished difference Result 21303 states and 79083 transitions. [2022-01-18 14:29:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:29:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2022-01-18 14:29:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:47,396 INFO L225 Difference]: With dead ends: 21303 [2022-01-18 14:29:47,396 INFO L226 Difference]: Without dead ends: 21255 [2022-01-18 14:29:47,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:29:47,396 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 112 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:47,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 672 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21255 states. [2022-01-18 14:29:47,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21255 to 19994. [2022-01-18 14:29:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19994 states, 19993 states have (on average 3.77492122242785) internal successors, (75472), 19993 states have internal predecessors, (75472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19994 states to 19994 states and 75472 transitions. [2022-01-18 14:29:47,910 INFO L78 Accepts]: Start accepts. Automaton has 19994 states and 75472 transitions. Word has length 27 [2022-01-18 14:29:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:47,910 INFO L470 AbstractCegarLoop]: Abstraction has 19994 states and 75472 transitions. [2022-01-18 14:29:47,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 19994 states and 75472 transitions. [2022-01-18 14:29:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:47,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:47,942 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:47,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 14:29:48,143 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 [2022-01-18 14:29:48,144 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:48,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1829336258, now seen corresponding path program 50 times [2022-01-18 14:29:48,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:48,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295103518] [2022-01-18 14:29:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:48,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:48,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:48,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295103518] [2022-01-18 14:29:48,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295103518] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:48,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663335981] [2022-01-18 14:29:48,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:29:48,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:48,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:48,244 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) [2022-01-18 14:29:48,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 14:29:48,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:29:48,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:48,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:48,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:48,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:48,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663335981] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:48,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:48,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 16 [2022-01-18 14:29:48,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711955495] [2022-01-18 14:29:48,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:48,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 14:29:48,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 14:29:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:29:48,613 INFO L87 Difference]: Start difference. First operand 19994 states and 75472 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:48,922 INFO L93 Difference]: Finished difference Result 21008 states and 78520 transitions. [2022-01-18 14:29:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2022-01-18 14:29:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:48,982 INFO L225 Difference]: With dead ends: 21008 [2022-01-18 14:29:48,982 INFO L226 Difference]: Without dead ends: 20978 [2022-01-18 14:29:48,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-01-18 14:29:48,983 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 108 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:48,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 464 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20978 states. [2022-01-18 14:29:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20978 to 20240. [2022-01-18 14:29:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20240 states, 20239 states have (on average 3.7752853401847917) internal successors, (76408), 20239 states have internal predecessors, (76408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20240 states to 20240 states and 76408 transitions. [2022-01-18 14:29:49,550 INFO L78 Accepts]: Start accepts. Automaton has 20240 states and 76408 transitions. Word has length 27 [2022-01-18 14:29:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:49,550 INFO L470 AbstractCegarLoop]: Abstraction has 20240 states and 76408 transitions. [2022-01-18 14:29:49,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:49,550 INFO L276 IsEmpty]: Start isEmpty. Operand 20240 states and 76408 transitions. [2022-01-18 14:29:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:49,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:49,585 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:49,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 14:29:49,785 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 [2022-01-18 14:29:49,785 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1559770698, now seen corresponding path program 51 times [2022-01-18 14:29:49,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:49,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170082661] [2022-01-18 14:29:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:49,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:49,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170082661] [2022-01-18 14:29:49,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170082661] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273045147] [2022-01-18 14:29:49,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:29:49,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:49,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:49,898 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) [2022-01-18 14:29:49,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 14:29:50,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:29:50,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:50,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:50,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:50,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:50,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273045147] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:50,467 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:50,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-01-18 14:29:50,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711699758] [2022-01-18 14:29:50,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:50,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 14:29:50,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:50,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 14:29:50,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:29:50,468 INFO L87 Difference]: Start difference. First operand 20240 states and 76408 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:50,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:50,892 INFO L93 Difference]: Finished difference Result 21252 states and 79458 transitions. [2022-01-18 14:29:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 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 [2022-01-18 14:29:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:50,954 INFO L225 Difference]: With dead ends: 21252 [2022-01-18 14:29:50,954 INFO L226 Difference]: Without dead ends: 21222 [2022-01-18 14:29:50,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:29:50,954 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 97 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:50,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 598 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:29:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21222 states. [2022-01-18 14:29:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21222 to 20470. [2022-01-18 14:29:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20470 states, 20469 states have (on average 3.775660755288485) internal successors, (77284), 20469 states have internal predecessors, (77284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20470 states to 20470 states and 77284 transitions. [2022-01-18 14:29:51,457 INFO L78 Accepts]: Start accepts. Automaton has 20470 states and 77284 transitions. Word has length 27 [2022-01-18 14:29:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:51,457 INFO L470 AbstractCegarLoop]: Abstraction has 20470 states and 77284 transitions. [2022-01-18 14:29:51,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 20470 states and 77284 transitions. [2022-01-18 14:29:51,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:51,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:51,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:51,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 14:29:51,696 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 [2022-01-18 14:29:51,696 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1365087366, now seen corresponding path program 52 times [2022-01-18 14:29:51,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:51,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499130667] [2022-01-18 14:29:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:51,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:51,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:51,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499130667] [2022-01-18 14:29:51,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499130667] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:51,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362129725] [2022-01-18 14:29:51,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:29:51,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:51,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:51,799 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) [2022-01-18 14:29:51,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 14:29:51,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:29:51,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:51,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:51,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:52,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:52,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362129725] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:52,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:52,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-01-18 14:29:52,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565274632] [2022-01-18 14:29:52,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:52,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 14:29:52,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 14:29:52,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:29:52,214 INFO L87 Difference]: Start difference. First operand 20470 states and 77284 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:52,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:52,749 INFO L93 Difference]: Finished difference Result 21101 states and 79088 transitions. [2022-01-18 14:29:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:52,749 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 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 [2022-01-18 14:29:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:52,804 INFO L225 Difference]: With dead ends: 21101 [2022-01-18 14:29:52,804 INFO L226 Difference]: Without dead ends: 21003 [2022-01-18 14:29:52,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:29:52,804 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 90 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:52,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 548 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21003 states. [2022-01-18 14:29:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21003 to 20668. [2022-01-18 14:29:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20668 states, 20667 states have (on average 3.772245608941791) internal successors, (77961), 20667 states have internal predecessors, (77961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20668 states to 20668 states and 77961 transitions. [2022-01-18 14:29:53,391 INFO L78 Accepts]: Start accepts. Automaton has 20668 states and 77961 transitions. Word has length 27 [2022-01-18 14:29:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:53,392 INFO L470 AbstractCegarLoop]: Abstraction has 20668 states and 77961 transitions. [2022-01-18 14:29:53,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20668 states and 77961 transitions. [2022-01-18 14:29:53,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:53,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:53,430 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:53,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 14:29:53,630 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 [2022-01-18 14:29:53,630 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash -564336006, now seen corresponding path program 53 times [2022-01-18 14:29:53,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:53,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977602962] [2022-01-18 14:29:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:53,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:53,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:53,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977602962] [2022-01-18 14:29:53,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977602962] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:53,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912592153] [2022-01-18 14:29:53,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:29:53,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:53,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:53,752 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) [2022-01-18 14:29:53,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 14:29:53,778 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 14:29:53,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:53,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:53,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:54,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:54,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912592153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:54,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:54,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 14:29:54,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137554631] [2022-01-18 14:29:54,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:54,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:29:54,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:29:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:29:54,194 INFO L87 Difference]: Start difference. First operand 20668 states and 77961 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:54,700 INFO L93 Difference]: Finished difference Result 22401 states and 83279 transitions. [2022-01-18 14:29:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:29:54,701 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2022-01-18 14:29:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:54,761 INFO L225 Difference]: With dead ends: 22401 [2022-01-18 14:29:54,761 INFO L226 Difference]: Without dead ends: 22360 [2022-01-18 14:29:54,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-01-18 14:29:54,762 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 119 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:54,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 944 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:29:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22360 states. [2022-01-18 14:29:55,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22360 to 21222. [2022-01-18 14:29:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21222 states, 21221 states have (on average 3.7722538994392347) internal successors, (80051), 21221 states have internal predecessors, (80051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21222 states to 21222 states and 80051 transitions. [2022-01-18 14:29:55,262 INFO L78 Accepts]: Start accepts. Automaton has 21222 states and 80051 transitions. Word has length 27 [2022-01-18 14:29:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:55,263 INFO L470 AbstractCegarLoop]: Abstraction has 21222 states and 80051 transitions. [2022-01-18 14:29:55,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 21222 states and 80051 transitions. [2022-01-18 14:29:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:55,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:55,299 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:55,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-18 14:29:55,500 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 [2022-01-18 14:29:55,500 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash -543379962, now seen corresponding path program 54 times [2022-01-18 14:29:55,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:55,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626992930] [2022-01-18 14:29:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:55,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:55,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:55,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626992930] [2022-01-18 14:29:55,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626992930] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:55,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459736940] [2022-01-18 14:29:55,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:29:55,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:55,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:55,592 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) [2022-01-18 14:29:55,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 14:29:55,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:29:55,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:55,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:55,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:55,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 14:29:56,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459736940] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:56,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:56,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 16 [2022-01-18 14:29:56,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056789601] [2022-01-18 14:29:56,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:56,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 14:29:56,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 14:29:56,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:29:56,060 INFO L87 Difference]: Start difference. First operand 21222 states and 80051 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:56,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:56,446 INFO L93 Difference]: Finished difference Result 22034 states and 82438 transitions. [2022-01-18 14:29:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:56,446 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-18 14:29:56,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:56,502 INFO L225 Difference]: With dead ends: 22034 [2022-01-18 14:29:56,502 INFO L226 Difference]: Without dead ends: 21972 [2022-01-18 14:29:56,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-01-18 14:29:56,503 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 84 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:56,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 625 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21972 states. [2022-01-18 14:29:56,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21972 to 21408. [2022-01-18 14:29:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21408 states, 21407 states have (on average 3.7745130097631616) internal successors, (80801), 21407 states have internal predecessors, (80801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:57,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21408 states to 21408 states and 80801 transitions. [2022-01-18 14:29:57,090 INFO L78 Accepts]: Start accepts. Automaton has 21408 states and 80801 transitions. Word has length 27 [2022-01-18 14:29:57,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:57,090 INFO L470 AbstractCegarLoop]: Abstraction has 21408 states and 80801 transitions. [2022-01-18 14:29:57,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 21408 states and 80801 transitions. [2022-01-18 14:29:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:57,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:57,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:57,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-18 14:29:57,329 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 [2022-01-18 14:29:57,329 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:57,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash 904745286, now seen corresponding path program 55 times [2022-01-18 14:29:57,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:57,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147511712] [2022-01-18 14:29:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:57,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:57,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:57,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147511712] [2022-01-18 14:29:57,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147511712] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:57,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639108413] [2022-01-18 14:29:57,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:29:57,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:57,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:57,414 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) [2022-01-18 14:29:57,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 14:29:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:57,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:57,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:57,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:29:57,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639108413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:57,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:57,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-01-18 14:29:57,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738537615] [2022-01-18 14:29:57,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:57,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 14:29:57,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:57,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 14:29:57,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:29:57,774 INFO L87 Difference]: Start difference. First operand 21408 states and 80801 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:29:58,132 INFO L93 Difference]: Finished difference Result 21975 states and 82472 transitions. [2022-01-18 14:29:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:29:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 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 [2022-01-18 14:29:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:29:58,189 INFO L225 Difference]: With dead ends: 21975 [2022-01-18 14:29:58,189 INFO L226 Difference]: Without dead ends: 21907 [2022-01-18 14:29:58,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:29:58,189 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 74 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:29:58,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 606 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:29:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21907 states. [2022-01-18 14:29:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21907 to 21570. [2022-01-18 14:29:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21570 states, 21569 states have (on average 3.7743984422087253) internal successors, (81410), 21569 states have internal predecessors, (81410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21570 states to 21570 states and 81410 transitions. [2022-01-18 14:29:58,689 INFO L78 Accepts]: Start accepts. Automaton has 21570 states and 81410 transitions. Word has length 27 [2022-01-18 14:29:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:29:58,689 INFO L470 AbstractCegarLoop]: Abstraction has 21570 states and 81410 transitions. [2022-01-18 14:29:58,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:29:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 21570 states and 81410 transitions. [2022-01-18 14:29:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:29:58,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:29:58,726 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:29:58,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 14:29:58,926 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 [2022-01-18 14:29:58,927 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:29:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:29:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash 392023814, now seen corresponding path program 56 times [2022-01-18 14:29:58,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:29:58,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537193496] [2022-01-18 14:29:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:29:58,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:29:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:29:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:59,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:29:59,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537193496] [2022-01-18 14:29:59,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537193496] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:29:59,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739171869] [2022-01-18 14:29:59,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:29:59,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:29:59,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:29:59,028 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) [2022-01-18 14:29:59,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 14:29:59,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:29:59,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:29:59,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:29:59,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:29:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:29:59,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:29:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:29:59,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739171869] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:29:59,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:29:59,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-01-18 14:29:59,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983727944] [2022-01-18 14:29:59,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:29:59,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 14:29:59,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:29:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 14:29:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-01-18 14:29:59,476 INFO L87 Difference]: Start difference. First operand 21570 states and 81410 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:00,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:00,119 INFO L93 Difference]: Finished difference Result 24163 states and 89788 transitions. [2022-01-18 14:30:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:30:00,119 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2022-01-18 14:30:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:00,188 INFO L225 Difference]: With dead ends: 24163 [2022-01-18 14:30:00,189 INFO L226 Difference]: Without dead ends: 24098 [2022-01-18 14:30:00,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:30:00,189 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 115 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:00,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1022 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:30:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24098 states. [2022-01-18 14:30:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24098 to 22358. [2022-01-18 14:30:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22358 states, 22357 states have (on average 3.7849443127432125) internal successors, (84620), 22357 states have internal predecessors, (84620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22358 states to 22358 states and 84620 transitions. [2022-01-18 14:30:00,805 INFO L78 Accepts]: Start accepts. Automaton has 22358 states and 84620 transitions. Word has length 27 [2022-01-18 14:30:00,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:00,805 INFO L470 AbstractCegarLoop]: Abstraction has 22358 states and 84620 transitions. [2022-01-18 14:30:00,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 22358 states and 84620 transitions. [2022-01-18 14:30:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:00,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:00,851 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:00,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 14:30:01,052 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 [2022-01-18 14:30:01,052 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:01,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:01,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1720511174, now seen corresponding path program 57 times [2022-01-18 14:30:01,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:01,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596528242] [2022-01-18 14:30:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:01,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:01,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:01,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596528242] [2022-01-18 14:30:01,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596528242] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:01,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846655213] [2022-01-18 14:30:01,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:30:01,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:01,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:01,158 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) [2022-01-18 14:30:01,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 14:30:01,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:30:01,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:01,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:01,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:01,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:01,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846655213] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:01,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:01,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-01-18 14:30:01,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587270191] [2022-01-18 14:30:01,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:01,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 14:30:01,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 14:30:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-01-18 14:30:01,562 INFO L87 Difference]: Start difference. First operand 22358 states and 84620 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:02,076 INFO L93 Difference]: Finished difference Result 23198 states and 87112 transitions. [2022-01-18 14:30:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:30:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 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 [2022-01-18 14:30:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:02,148 INFO L225 Difference]: With dead ends: 23198 [2022-01-18 14:30:02,148 INFO L226 Difference]: Without dead ends: 23168 [2022-01-18 14:30:02,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-01-18 14:30:02,148 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:02,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 669 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23168 states. [2022-01-18 14:30:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23168 to 22488. [2022-01-18 14:30:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22488 states, 22487 states have (on average 3.785698403522035) internal successors, (85129), 22487 states have internal predecessors, (85129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22488 states to 22488 states and 85129 transitions. [2022-01-18 14:30:02,785 INFO L78 Accepts]: Start accepts. Automaton has 22488 states and 85129 transitions. Word has length 27 [2022-01-18 14:30:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:02,785 INFO L470 AbstractCegarLoop]: Abstraction has 22488 states and 85129 transitions. [2022-01-18 14:30:02,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 22488 states and 85129 transitions. [2022-01-18 14:30:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:02,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:02,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:02,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 14:30:03,024 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 [2022-01-18 14:30:03,024 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash 974893574, now seen corresponding path program 58 times [2022-01-18 14:30:03,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:03,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502052187] [2022-01-18 14:30:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:03,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:03,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:03,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502052187] [2022-01-18 14:30:03,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502052187] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:03,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493757321] [2022-01-18 14:30:03,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:30:03,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:03,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:03,114 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) [2022-01-18 14:30:03,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 14:30:03,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:30:03,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:03,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:03,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:03,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:30:03,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493757321] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:03,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:03,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 14:30:03,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295476272] [2022-01-18 14:30:03,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:03,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 14:30:03,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:03,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 14:30:03,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:30:03,660 INFO L87 Difference]: Start difference. First operand 22488 states and 85129 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:04,143 INFO L93 Difference]: Finished difference Result 24712 states and 92130 transitions. [2022-01-18 14:30:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:30:04,145 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-18 14:30:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:04,226 INFO L225 Difference]: With dead ends: 24712 [2022-01-18 14:30:04,226 INFO L226 Difference]: Without dead ends: 24678 [2022-01-18 14:30:04,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-01-18 14:30:04,227 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 108 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:04,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 892 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24678 states. [2022-01-18 14:30:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24678 to 23061. [2022-01-18 14:30:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23061 states, 23060 states have (on average 3.7935819601040763) internal successors, (87480), 23060 states have internal predecessors, (87480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23061 states to 23061 states and 87480 transitions. [2022-01-18 14:30:04,820 INFO L78 Accepts]: Start accepts. Automaton has 23061 states and 87480 transitions. Word has length 27 [2022-01-18 14:30:04,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:04,820 INFO L470 AbstractCegarLoop]: Abstraction has 23061 states and 87480 transitions. [2022-01-18 14:30:04,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 23061 states and 87480 transitions. [2022-01-18 14:30:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:04,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:04,861 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:04,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-01-18 14:30:05,061 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 [2022-01-18 14:30:05,061 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash 612630986, now seen corresponding path program 59 times [2022-01-18 14:30:05,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:05,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30468213] [2022-01-18 14:30:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:05,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:05,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30468213] [2022-01-18 14:30:05,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30468213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162091102] [2022-01-18 14:30:05,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:30:05,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:05,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:05,160 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) [2022-01-18 14:30:05,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 14:30:05,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 14:30:05,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:05,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:05,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:05,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:05,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162091102] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:05,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:05,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 14:30:05,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552343768] [2022-01-18 14:30:05,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:05,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:30:05,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:05,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:30:05,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:30:05,544 INFO L87 Difference]: Start difference. First operand 23061 states and 87480 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:05,956 INFO L93 Difference]: Finished difference Result 23923 states and 90023 transitions. [2022-01-18 14:30:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:30:05,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-18 14:30:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:06,041 INFO L225 Difference]: With dead ends: 23923 [2022-01-18 14:30:06,042 INFO L226 Difference]: Without dead ends: 23893 [2022-01-18 14:30:06,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:30:06,042 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 110 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:06,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 529 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:30:06,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23893 states. [2022-01-18 14:30:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23893 to 23171. [2022-01-18 14:30:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23171 states, 23170 states have (on average 3.795338800172637) internal successors, (87938), 23170 states have internal predecessors, (87938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23171 states to 23171 states and 87938 transitions. [2022-01-18 14:30:06,740 INFO L78 Accepts]: Start accepts. Automaton has 23171 states and 87938 transitions. Word has length 27 [2022-01-18 14:30:06,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:06,740 INFO L470 AbstractCegarLoop]: Abstraction has 23171 states and 87938 transitions. [2022-01-18 14:30:06,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 23171 states and 87938 transitions. [2022-01-18 14:30:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:06,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:06,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:06,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-01-18 14:30:06,986 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 [2022-01-18 14:30:06,986 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1406917254, now seen corresponding path program 60 times [2022-01-18 14:30:06,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:06,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137677562] [2022-01-18 14:30:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:06,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:07,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:07,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137677562] [2022-01-18 14:30:07,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137677562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:07,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201799593] [2022-01-18 14:30:07,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:30:07,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:07,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:07,066 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) [2022-01-18 14:30:07,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 14:30:07,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 14:30:07,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:07,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:07,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:07,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:07,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201799593] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:07,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:07,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 14:30:07,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555535475] [2022-01-18 14:30:07,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:07,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 14:30:07,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 14:30:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-01-18 14:30:07,600 INFO L87 Difference]: Start difference. First operand 23171 states and 87938 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:07,997 INFO L93 Difference]: Finished difference Result 23779 states and 89642 transitions. [2022-01-18 14:30:07,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:30:07,998 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-18 14:30:07,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:08,063 INFO L225 Difference]: With dead ends: 23779 [2022-01-18 14:30:08,063 INFO L226 Difference]: Without dead ends: 23729 [2022-01-18 14:30:08,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:30:08,064 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 100 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:08,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 489 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:30:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23729 states. [2022-01-18 14:30:08,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23729 to 23331. [2022-01-18 14:30:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23331 states, 23330 states have (on average 3.794513501928847) internal successors, (88526), 23330 states have internal predecessors, (88526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23331 states to 23331 states and 88526 transitions. [2022-01-18 14:30:08,719 INFO L78 Accepts]: Start accepts. Automaton has 23331 states and 88526 transitions. Word has length 27 [2022-01-18 14:30:08,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:08,719 INFO L470 AbstractCegarLoop]: Abstraction has 23331 states and 88526 transitions. [2022-01-18 14:30:08,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 23331 states and 88526 transitions. [2022-01-18 14:30:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:08,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:08,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:08,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 14:30:08,962 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 [2022-01-18 14:30:08,962 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:08,963 INFO L85 PathProgramCache]: Analyzing trace with hash 798928522, now seen corresponding path program 61 times [2022-01-18 14:30:08,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:08,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509210475] [2022-01-18 14:30:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:08,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:09,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:09,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509210475] [2022-01-18 14:30:09,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509210475] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:09,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194987064] [2022-01-18 14:30:09,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:30:09,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:09,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:09,072 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) [2022-01-18 14:30:09,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 14:30:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:09,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:09,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:09,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:30:09,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194987064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:09,489 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:09,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-01-18 14:30:09,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50705363] [2022-01-18 14:30:09,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:09,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 14:30:09,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:09,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 14:30:09,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-01-18 14:30:09,490 INFO L87 Difference]: Start difference. First operand 23331 states and 88526 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:09,916 INFO L93 Difference]: Finished difference Result 25647 states and 95754 transitions. [2022-01-18 14:30:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:30:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 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 [2022-01-18 14:30:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:10,006 INFO L225 Difference]: With dead ends: 25647 [2022-01-18 14:30:10,006 INFO L226 Difference]: Without dead ends: 25595 [2022-01-18 14:30:10,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:30:10,006 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 115 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:10,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 766 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:30:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25595 states. [2022-01-18 14:30:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25595 to 23873. [2022-01-18 14:30:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23873 states, 23872 states have (on average 3.8009383378016084) internal successors, (90736), 23872 states have internal predecessors, (90736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23873 states to 23873 states and 90736 transitions. [2022-01-18 14:30:10,718 INFO L78 Accepts]: Start accepts. Automaton has 23873 states and 90736 transitions. Word has length 27 [2022-01-18 14:30:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:10,718 INFO L470 AbstractCegarLoop]: Abstraction has 23873 states and 90736 transitions. [2022-01-18 14:30:10,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 23873 states and 90736 transitions. [2022-01-18 14:30:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:10,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:10,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:10,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-01-18 14:30:10,958 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 [2022-01-18 14:30:10,959 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:10,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1773933906, now seen corresponding path program 62 times [2022-01-18 14:30:10,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:10,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748149473] [2022-01-18 14:30:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:10,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:11,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:11,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748149473] [2022-01-18 14:30:11,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748149473] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:11,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373984764] [2022-01-18 14:30:11,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:30:11,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:11,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:11,072 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) [2022-01-18 14:30:11,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 14:30:11,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:30:11,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:11,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:11,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:11,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:11,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373984764] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:11,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:11,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-01-18 14:30:11,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822184779] [2022-01-18 14:30:11,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:11,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 14:30:11,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 14:30:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-01-18 14:30:11,545 INFO L87 Difference]: Start difference. First operand 23873 states and 90736 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:12,152 INFO L93 Difference]: Finished difference Result 24766 states and 93367 transitions. [2022-01-18 14:30:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:30:12,152 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2022-01-18 14:30:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:12,225 INFO L225 Difference]: With dead ends: 24766 [2022-01-18 14:30:12,225 INFO L226 Difference]: Without dead ends: 24736 [2022-01-18 14:30:12,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-01-18 14:30:12,225 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:12,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 596 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24736 states. [2022-01-18 14:30:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24736 to 23990. [2022-01-18 14:30:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23990 states, 23989 states have (on average 3.802742923840093) internal successors, (91224), 23989 states have internal predecessors, (91224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23990 states to 23990 states and 91224 transitions. [2022-01-18 14:30:12,787 INFO L78 Accepts]: Start accepts. Automaton has 23990 states and 91224 transitions. Word has length 27 [2022-01-18 14:30:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:12,787 INFO L470 AbstractCegarLoop]: Abstraction has 23990 states and 91224 transitions. [2022-01-18 14:30:12,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 23990 states and 91224 transitions. [2022-01-18 14:30:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:12,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:12,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:12,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-01-18 14:30:13,168 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 [2022-01-18 14:30:13,169 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:13,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:13,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1614694410, now seen corresponding path program 63 times [2022-01-18 14:30:13,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:13,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654383649] [2022-01-18 14:30:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:13,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:13,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:13,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654383649] [2022-01-18 14:30:13,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654383649] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:13,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625796407] [2022-01-18 14:30:13,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:30:13,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:13,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:13,275 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) [2022-01-18 14:30:13,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 14:30:13,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:30:13,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:13,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:13,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:13,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:13,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625796407] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:13,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:13,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-01-18 14:30:13,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163581617] [2022-01-18 14:30:13,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:13,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 14:30:13,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 14:30:13,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-01-18 14:30:13,694 INFO L87 Difference]: Start difference. First operand 23990 states and 91224 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:14,149 INFO L93 Difference]: Finished difference Result 25122 states and 94481 transitions. [2022-01-18 14:30:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:30:14,149 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 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 [2022-01-18 14:30:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:14,224 INFO L225 Difference]: With dead ends: 25122 [2022-01-18 14:30:14,224 INFO L226 Difference]: Without dead ends: 25084 [2022-01-18 14:30:14,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-01-18 14:30:14,224 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 115 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:14,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 681 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:30:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25084 states. [2022-01-18 14:30:14,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25084 to 24200. [2022-01-18 14:30:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24200 states, 24199 states have (on average 3.803297656927972) internal successors, (92036), 24199 states have internal predecessors, (92036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24200 states to 24200 states and 92036 transitions. [2022-01-18 14:30:14,852 INFO L78 Accepts]: Start accepts. Automaton has 24200 states and 92036 transitions. Word has length 27 [2022-01-18 14:30:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:14,852 INFO L470 AbstractCegarLoop]: Abstraction has 24200 states and 92036 transitions. [2022-01-18 14:30:14,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 24200 states and 92036 transitions. [2022-01-18 14:30:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:14,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:14,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:14,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-01-18 14:30:15,095 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 [2022-01-18 14:30:15,095 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1613186170, now seen corresponding path program 64 times [2022-01-18 14:30:15,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:15,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448415233] [2022-01-18 14:30:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:15,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:15,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:15,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448415233] [2022-01-18 14:30:15,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448415233] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:15,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059591216] [2022-01-18 14:30:15,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:30:15,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:15,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:15,206 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) [2022-01-18 14:30:15,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 14:30:15,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:30:15,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:15,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:15,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:15,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:15,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059591216] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:15,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:15,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2022-01-18 14:30:15,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138572303] [2022-01-18 14:30:15,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:15,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 14:30:15,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 14:30:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:30:15,615 INFO L87 Difference]: Start difference. First operand 24200 states and 92036 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:16,071 INFO L93 Difference]: Finished difference Result 26053 states and 97640 transitions. [2022-01-18 14:30:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:30:16,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2022-01-18 14:30:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:16,144 INFO L225 Difference]: With dead ends: 26053 [2022-01-18 14:30:16,144 INFO L226 Difference]: Without dead ends: 25996 [2022-01-18 14:30:16,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:30:16,145 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 139 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:16,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 746 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25996 states. [2022-01-18 14:30:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25996 to 24705. [2022-01-18 14:30:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24705 states, 24704 states have (on average 3.803958873056995) internal successors, (93973), 24704 states have internal predecessors, (93973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24705 states to 24705 states and 93973 transitions. [2022-01-18 14:30:16,823 INFO L78 Accepts]: Start accepts. Automaton has 24705 states and 93973 transitions. Word has length 27 [2022-01-18 14:30:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:16,823 INFO L470 AbstractCegarLoop]: Abstraction has 24705 states and 93973 transitions. [2022-01-18 14:30:16,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 24705 states and 93973 transitions. [2022-01-18 14:30:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:16,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:16,869 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:16,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-01-18 14:30:17,069 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 [2022-01-18 14:30:17,069 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:17,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:17,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1105734706, now seen corresponding path program 65 times [2022-01-18 14:30:17,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:17,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174993484] [2022-01-18 14:30:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:17,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:17,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:17,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174993484] [2022-01-18 14:30:17,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174993484] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:17,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791782296] [2022-01-18 14:30:17,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:30:17,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:17,187 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) [2022-01-18 14:30:17,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:30:17,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:17,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:17,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:17,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 14:30:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:17,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:17,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791782296] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:17,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:17,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 16 [2022-01-18 14:30:17,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306232065] [2022-01-18 14:30:17,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:17,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 14:30:17,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 14:30:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-01-18 14:30:17,629 INFO L87 Difference]: Start difference. First operand 24705 states and 93973 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:18,244 INFO L93 Difference]: Finished difference Result 25797 states and 97262 transitions. [2022-01-18 14:30:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:30:18,244 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2022-01-18 14:30:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:18,321 INFO L225 Difference]: With dead ends: 25797 [2022-01-18 14:30:18,322 INFO L226 Difference]: Without dead ends: 25767 [2022-01-18 14:30:18,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:30:18,322 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 108 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:18,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 570 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:30:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25767 states. [2022-01-18 14:30:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25767 to 24956. [2022-01-18 14:30:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24956 states, 24955 states have (on average 3.8041274293728713) internal successors, (94932), 24955 states have internal predecessors, (94932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24956 states to 24956 states and 94932 transitions. [2022-01-18 14:30:18,961 INFO L78 Accepts]: Start accepts. Automaton has 24956 states and 94932 transitions. Word has length 27 [2022-01-18 14:30:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:18,961 INFO L470 AbstractCegarLoop]: Abstraction has 24956 states and 94932 transitions. [2022-01-18 14:30:18,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 24956 states and 94932 transitions. [2022-01-18 14:30:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:19,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:19,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:19,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 14:30:19,321 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 [2022-01-18 14:30:19,322 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash -542120122, now seen corresponding path program 66 times [2022-01-18 14:30:19,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:19,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075858189] [2022-01-18 14:30:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:19,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:19,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075858189] [2022-01-18 14:30:19,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075858189] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660268600] [2022-01-18 14:30:19,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:30:19,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:19,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:19,416 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) [2022-01-18 14:30:19,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 14:30:19,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 14:30:19,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:19,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:19,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:19,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:19,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660268600] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:19,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:19,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-01-18 14:30:19,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460048698] [2022-01-18 14:30:19,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:19,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 14:30:19,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 14:30:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:30:19,832 INFO L87 Difference]: Start difference. First operand 24956 states and 94932 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:20,301 INFO L93 Difference]: Finished difference Result 26051 states and 98233 transitions. [2022-01-18 14:30:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:30:20,301 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 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 [2022-01-18 14:30:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:20,381 INFO L225 Difference]: With dead ends: 26051 [2022-01-18 14:30:20,381 INFO L226 Difference]: Without dead ends: 26021 [2022-01-18 14:30:20,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:30:20,381 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 120 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:20,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 576 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26021 states. [2022-01-18 14:30:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26021 to 25256. [2022-01-18 14:30:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25256 states, 25255 states have (on average 3.8028905167293607) internal successors, (96042), 25255 states have internal predecessors, (96042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25256 states to 25256 states and 96042 transitions. [2022-01-18 14:30:21,035 INFO L78 Accepts]: Start accepts. Automaton has 25256 states and 96042 transitions. Word has length 27 [2022-01-18 14:30:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:21,035 INFO L470 AbstractCegarLoop]: Abstraction has 25256 states and 96042 transitions. [2022-01-18 14:30:21,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:21,035 INFO L276 IsEmpty]: Start isEmpty. Operand 25256 states and 96042 transitions. [2022-01-18 14:30:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:21,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:21,080 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:21,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 14:30:21,280 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 [2022-01-18 14:30:21,280 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1463907830, now seen corresponding path program 67 times [2022-01-18 14:30:21,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:21,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943425591] [2022-01-18 14:30:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:21,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:21,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:21,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943425591] [2022-01-18 14:30:21,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943425591] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:21,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404437092] [2022-01-18 14:30:21,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:30:21,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:21,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:21,378 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) [2022-01-18 14:30:21,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 14:30:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:21,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:21,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:21,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:21,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404437092] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:21,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:21,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2022-01-18 14:30:21,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774549369] [2022-01-18 14:30:21,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:21,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 14:30:21,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 14:30:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 14:30:21,743 INFO L87 Difference]: Start difference. First operand 25256 states and 96042 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:22,241 INFO L93 Difference]: Finished difference Result 26140 states and 98548 transitions. [2022-01-18 14:30:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 14:30:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 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 [2022-01-18 14:30:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:22,321 INFO L225 Difference]: With dead ends: 26140 [2022-01-18 14:30:22,321 INFO L226 Difference]: Without dead ends: 26060 [2022-01-18 14:30:22,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:30:22,322 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 118 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:22,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 741 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:22,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26060 states. [2022-01-18 14:30:22,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26060 to 25404. [2022-01-18 14:30:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25404 states, 25403 states have (on average 3.804117623902689) internal successors, (96636), 25403 states have internal predecessors, (96636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25404 states to 25404 states and 96636 transitions. [2022-01-18 14:30:23,014 INFO L78 Accepts]: Start accepts. Automaton has 25404 states and 96636 transitions. Word has length 27 [2022-01-18 14:30:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:23,014 INFO L470 AbstractCegarLoop]: Abstraction has 25404 states and 96636 transitions. [2022-01-18 14:30:23,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 25404 states and 96636 transitions. [2022-01-18 14:30:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 14:30:23,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:23,066 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:23,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 14:30:23,266 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 [2022-01-18 14:30:23,266 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash 741935370, now seen corresponding path program 68 times [2022-01-18 14:30:23,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:23,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828351888] [2022-01-18 14:30:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:23,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:23,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:23,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828351888] [2022-01-18 14:30:23,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828351888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:23,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977769103] [2022-01-18 14:30:23,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:30:23,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:23,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:23,381 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) [2022-01-18 14:30:23,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 14:30:23,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:30:23,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:23,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 14:30:23,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:30:23,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:23,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977769103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:23,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:23,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 14:30:23,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643360650] [2022-01-18 14:30:23,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:23,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:30:23,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:23,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:30:23,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:30:23,884 INFO L87 Difference]: Start difference. First operand 25404 states and 96636 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:24,642 INFO L93 Difference]: Finished difference Result 27191 states and 101959 transitions. [2022-01-18 14:30:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 14:30:24,642 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 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 [2022-01-18 14:30:24,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:24,731 INFO L225 Difference]: With dead ends: 27191 [2022-01-18 14:30:24,731 INFO L226 Difference]: Without dead ends: 27161 [2022-01-18 14:30:24,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-01-18 14:30:24,732 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 141 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:24,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 890 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27161 states. [2022-01-18 14:30:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27161 to 25631. [2022-01-18 14:30:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25631 states, 25630 states have (on average 3.8072181037846273) internal successors, (97579), 25630 states have internal predecessors, (97579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 97579 transitions. [2022-01-18 14:30:25,620 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 97579 transitions. Word has length 27 [2022-01-18 14:30:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:25,620 INFO L470 AbstractCegarLoop]: Abstraction has 25631 states and 97579 transitions. [2022-01-18 14:30:25,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 97579 transitions. [2022-01-18 14:30:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:25,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:25,672 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:25,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 14:30:25,873 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 [2022-01-18 14:30:25,873 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:25,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1010428170, now seen corresponding path program 69 times [2022-01-18 14:30:25,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:25,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296853114] [2022-01-18 14:30:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:25,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:25,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296853114] [2022-01-18 14:30:25,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296853114] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619179654] [2022-01-18 14:30:25,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:30:25,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:25,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:25,919 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) [2022-01-18 14:30:25,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 14:30:25,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:30:25,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:25,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:25,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:30:26,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:30:26,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619179654] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:26,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:26,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-01-18 14:30:26,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852743553] [2022-01-18 14:30:26,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:26,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 14:30:26,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:26,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 14:30:26,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-18 14:30:26,091 INFO L87 Difference]: Start difference. First operand 25631 states and 97579 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 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) [2022-01-18 14:30:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:27,161 INFO L93 Difference]: Finished difference Result 45208 states and 159277 transitions. [2022-01-18 14:30:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 14:30:27,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 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 [2022-01-18 14:30:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:27,293 INFO L225 Difference]: With dead ends: 45208 [2022-01-18 14:30:27,293 INFO L226 Difference]: Without dead ends: 44876 [2022-01-18 14:30:27,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=946, Invalid=3086, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 14:30:27,294 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 358 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:27,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 229 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:30:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44876 states. [2022-01-18 14:30:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44876 to 29739. [2022-01-18 14:30:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29739 states, 29738 states have (on average 3.745947945389737) internal successors, (111397), 29738 states have internal predecessors, (111397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29739 states to 29739 states and 111397 transitions. [2022-01-18 14:30:28,205 INFO L78 Accepts]: Start accepts. Automaton has 29739 states and 111397 transitions. Word has length 29 [2022-01-18 14:30:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:28,205 INFO L470 AbstractCegarLoop]: Abstraction has 29739 states and 111397 transitions. [2022-01-18 14:30:28,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 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) [2022-01-18 14:30:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 29739 states and 111397 transitions. [2022-01-18 14:30:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:28,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:28,267 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:28,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-01-18 14:30:28,467 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 [2022-01-18 14:30:28,468 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash -917674058, now seen corresponding path program 70 times [2022-01-18 14:30:28,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:28,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895849129] [2022-01-18 14:30:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:28,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:28,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:28,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895849129] [2022-01-18 14:30:28,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895849129] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:28,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557182726] [2022-01-18 14:30:28,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:30:28,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:28,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:28,510 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) [2022-01-18 14:30:28,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 14:30:28,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:30:28,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:28,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:28,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:28,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:28,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557182726] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:28,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:28,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 14:30:28,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216714251] [2022-01-18 14:30:28,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:28,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 14:30:28,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:28,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 14:30:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:30:28,640 INFO L87 Difference]: Start difference. First operand 29739 states and 111397 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 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) [2022-01-18 14:30:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:29,164 INFO L93 Difference]: Finished difference Result 39651 states and 146789 transitions. [2022-01-18 14:30:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 14:30:29,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 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 29 [2022-01-18 14:30:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:29,292 INFO L225 Difference]: With dead ends: 39651 [2022-01-18 14:30:29,292 INFO L226 Difference]: Without dead ends: 39530 [2022-01-18 14:30:29,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 14:30:29,292 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 188 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:29,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 63 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:30:29,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39530 states. [2022-01-18 14:30:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39530 to 36556. [2022-01-18 14:30:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36556 states, 36555 states have (on average 3.7629052113254002) internal successors, (137553), 36555 states have internal predecessors, (137553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36556 states to 36556 states and 137553 transitions. [2022-01-18 14:30:30,391 INFO L78 Accepts]: Start accepts. Automaton has 36556 states and 137553 transitions. Word has length 29 [2022-01-18 14:30:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:30,392 INFO L470 AbstractCegarLoop]: Abstraction has 36556 states and 137553 transitions. [2022-01-18 14:30:30,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 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) [2022-01-18 14:30:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 36556 states and 137553 transitions. [2022-01-18 14:30:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:30,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:30,479 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:30,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-01-18 14:30:30,679 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 [2022-01-18 14:30:30,679 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:30,680 INFO L85 PathProgramCache]: Analyzing trace with hash -33618958, now seen corresponding path program 71 times [2022-01-18 14:30:30,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:30,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88727092] [2022-01-18 14:30:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:30,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:30:30,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:30,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88727092] [2022-01-18 14:30:30,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88727092] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:30,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632707889] [2022-01-18 14:30:30,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:30:30,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:30,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:30,733 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) [2022-01-18 14:30:30,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 14:30:30,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:30:30,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:30,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:30,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:30:30,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:30:30,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632707889] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:30,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:30,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 14:30:30,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875181821] [2022-01-18 14:30:30,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:30,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 14:30:30,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 14:30:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:30:30,858 INFO L87 Difference]: Start difference. First operand 36556 states and 137553 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) [2022-01-18 14:30:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:32,088 INFO L93 Difference]: Finished difference Result 72604 states and 263288 transitions. [2022-01-18 14:30:32,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 14:30:32,103 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 [2022-01-18 14:30:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:32,422 INFO L225 Difference]: With dead ends: 72604 [2022-01-18 14:30:32,423 INFO L226 Difference]: Without dead ends: 71924 [2022-01-18 14:30:32,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=456, Invalid=1436, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 14:30:32,423 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 690 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:32,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 74 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:30:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71924 states. [2022-01-18 14:30:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71924 to 56835. [2022-01-18 14:30:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56835 states, 56834 states have (on average 3.780958581131013) internal successors, (214887), 56834 states have internal predecessors, (214887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56835 states to 56835 states and 214887 transitions. [2022-01-18 14:30:34,566 INFO L78 Accepts]: Start accepts. Automaton has 56835 states and 214887 transitions. Word has length 29 [2022-01-18 14:30:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:34,566 INFO L470 AbstractCegarLoop]: Abstraction has 56835 states and 214887 transitions. [2022-01-18 14:30:34,566 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) [2022-01-18 14:30:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 56835 states and 214887 transitions. [2022-01-18 14:30:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:34,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:34,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:34,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-01-18 14:30:34,892 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 [2022-01-18 14:30:34,892 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1595309198, now seen corresponding path program 72 times [2022-01-18 14:30:34,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:34,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314600756] [2022-01-18 14:30:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:34,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:34,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:34,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314600756] [2022-01-18 14:30:34,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314600756] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:34,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316570870] [2022-01-18 14:30:34,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:30:34,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:34,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:34,925 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) [2022-01-18 14:30:34,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 14:30:34,950 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:30:34,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:34,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:34,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:35,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:35,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316570870] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:35,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:35,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2022-01-18 14:30:35,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281921884] [2022-01-18 14:30:35,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:35,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 14:30:35,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 14:30:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 14:30:35,054 INFO L87 Difference]: Start difference. First operand 56835 states and 214887 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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) [2022-01-18 14:30:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:36,726 INFO L93 Difference]: Finished difference Result 89898 states and 321645 transitions. [2022-01-18 14:30:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 14:30:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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 [2022-01-18 14:30:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:37,131 INFO L225 Difference]: With dead ends: 89898 [2022-01-18 14:30:37,132 INFO L226 Difference]: Without dead ends: 89269 [2022-01-18 14:30:37,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1258, Invalid=4442, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 14:30:37,132 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 515 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:37,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 277 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:30:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89269 states. [2022-01-18 14:30:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89269 to 56278. [2022-01-18 14:30:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56278 states, 56277 states have (on average 3.725216340600956) internal successors, (209644), 56277 states have internal predecessors, (209644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56278 states to 56278 states and 209644 transitions. [2022-01-18 14:30:39,014 INFO L78 Accepts]: Start accepts. Automaton has 56278 states and 209644 transitions. Word has length 29 [2022-01-18 14:30:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:39,014 INFO L470 AbstractCegarLoop]: Abstraction has 56278 states and 209644 transitions. [2022-01-18 14:30:39,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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) [2022-01-18 14:30:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 56278 states and 209644 transitions. [2022-01-18 14:30:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:39,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:39,505 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:39,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-18 14:30:39,727 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 [2022-01-18 14:30:39,727 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:39,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1683071826, now seen corresponding path program 73 times [2022-01-18 14:30:39,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:39,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849888131] [2022-01-18 14:30:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:39,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:39,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849888131] [2022-01-18 14:30:39,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849888131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825328970] [2022-01-18 14:30:39,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:30:39,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:39,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:39,764 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) [2022-01-18 14:30:39,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 14:30:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:39,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:39,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:39,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:39,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825328970] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:39,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:39,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:30:39,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229266161] [2022-01-18 14:30:39,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:39,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:30:39,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:30:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:30:39,871 INFO L87 Difference]: Start difference. First operand 56278 states and 209644 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:30:40,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:40,405 INFO L93 Difference]: Finished difference Result 71865 states and 264151 transitions. [2022-01-18 14:30:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 14:30:40,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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 29 [2022-01-18 14:30:40,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:40,664 INFO L225 Difference]: With dead ends: 71865 [2022-01-18 14:30:40,665 INFO L226 Difference]: Without dead ends: 71569 [2022-01-18 14:30:40,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:30:40,665 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:40,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 72 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:30:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71569 states. [2022-01-18 14:30:42,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71569 to 65321. [2022-01-18 14:30:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65321 states, 65320 states have (on average 3.7572565829761175) internal successors, (245424), 65320 states have internal predecessors, (245424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65321 states to 65321 states and 245424 transitions. [2022-01-18 14:30:42,859 INFO L78 Accepts]: Start accepts. Automaton has 65321 states and 245424 transitions. Word has length 29 [2022-01-18 14:30:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:42,859 INFO L470 AbstractCegarLoop]: Abstraction has 65321 states and 245424 transitions. [2022-01-18 14:30:42,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:30:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 65321 states and 245424 transitions. [2022-01-18 14:30:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:43,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:43,009 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:43,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 14:30:43,210 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 [2022-01-18 14:30:43,210 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:43,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash 470618158, now seen corresponding path program 74 times [2022-01-18 14:30:43,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:43,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122049093] [2022-01-18 14:30:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:43,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:43,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122049093] [2022-01-18 14:30:43,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122049093] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:43,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069689693] [2022-01-18 14:30:43,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:30:43,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:43,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:43,248 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) [2022-01-18 14:30:43,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 14:30:43,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:30:43,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:43,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:43,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:43,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:43,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069689693] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:43,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:43,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 14:30:43,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354488911] [2022-01-18 14:30:43,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:43,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 14:30:43,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:43,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 14:30:43,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:30:43,379 INFO L87 Difference]: Start difference. First operand 65321 states and 245424 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) [2022-01-18 14:30:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:45,024 INFO L93 Difference]: Finished difference Result 103005 states and 375221 transitions. [2022-01-18 14:30:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 14:30:45,025 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 [2022-01-18 14:30:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:45,461 INFO L225 Difference]: With dead ends: 103005 [2022-01-18 14:30:45,461 INFO L226 Difference]: Without dead ends: 102584 [2022-01-18 14:30:45,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=688, Invalid=2392, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 14:30:45,461 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 779 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:45,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 119 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102584 states. [2022-01-18 14:30:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102584 to 71823. [2022-01-18 14:30:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71823 states, 71822 states have (on average 3.7705020745732507) internal successors, (270805), 71822 states have internal predecessors, (270805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71823 states to 71823 states and 270805 transitions. [2022-01-18 14:30:48,752 INFO L78 Accepts]: Start accepts. Automaton has 71823 states and 270805 transitions. Word has length 29 [2022-01-18 14:30:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:48,752 INFO L470 AbstractCegarLoop]: Abstraction has 71823 states and 270805 transitions. [2022-01-18 14:30:48,752 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) [2022-01-18 14:30:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 71823 states and 270805 transitions. [2022-01-18 14:30:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:48,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:48,922 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:48,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 14:30:49,123 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 [2022-01-18 14:30:49,123 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash -57360982, now seen corresponding path program 75 times [2022-01-18 14:30:49,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:49,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908388245] [2022-01-18 14:30:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:49,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:49,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:49,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908388245] [2022-01-18 14:30:49,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908388245] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:49,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674778646] [2022-01-18 14:30:49,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:30:49,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:49,155 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) [2022-01-18 14:30:49,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 14:30:49,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 14:30:49,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:49,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:49,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:49,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:49,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674778646] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:49,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:49,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 14:30:49,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040884059] [2022-01-18 14:30:49,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:49,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 14:30:49,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:49,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 14:30:49,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:30:49,282 INFO L87 Difference]: Start difference. First operand 71823 states and 270805 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) [2022-01-18 14:30:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:50,564 INFO L93 Difference]: Finished difference Result 96023 states and 345002 transitions. [2022-01-18 14:30:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 14:30:50,565 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 [2022-01-18 14:30:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:51,392 INFO L225 Difference]: With dead ends: 96023 [2022-01-18 14:30:51,392 INFO L226 Difference]: Without dead ends: 95789 [2022-01-18 14:30:51,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=767, Invalid=2893, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 14:30:51,393 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 275 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:51,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 179 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:30:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95789 states. [2022-01-18 14:30:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95789 to 69544. [2022-01-18 14:30:53,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69543 states have (on average 3.776915002228837) internal successors, (262658), 69543 states have internal predecessors, (262658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 262658 transitions. [2022-01-18 14:30:53,966 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 262658 transitions. Word has length 29 [2022-01-18 14:30:53,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:53,966 INFO L470 AbstractCegarLoop]: Abstraction has 69544 states and 262658 transitions. [2022-01-18 14:30:53,966 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) [2022-01-18 14:30:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 262658 transitions. [2022-01-18 14:30:54,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:54,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:54,109 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:54,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 14:30:54,309 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 [2022-01-18 14:30:54,309 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:54,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:54,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1289401570, now seen corresponding path program 76 times [2022-01-18 14:30:54,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:54,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678800351] [2022-01-18 14:30:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:54,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:30:54,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:54,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678800351] [2022-01-18 14:30:54,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678800351] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:54,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789456853] [2022-01-18 14:30:54,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:30:54,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:54,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:54,346 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) [2022-01-18 14:30:54,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 14:30:54,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:30:54,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:54,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:54,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:30:54,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:30:54,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789456853] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:54,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:54,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:30:54,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955609383] [2022-01-18 14:30:54,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:54,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:30:54,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:54,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:30:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:30:54,471 INFO L87 Difference]: Start difference. First operand 69544 states and 262658 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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) [2022-01-18 14:30:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:30:55,019 INFO L93 Difference]: Finished difference Result 83392 states and 312140 transitions. [2022-01-18 14:30:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 14:30:55,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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 29 [2022-01-18 14:30:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:30:55,337 INFO L225 Difference]: With dead ends: 83392 [2022-01-18 14:30:55,338 INFO L226 Difference]: Without dead ends: 83358 [2022-01-18 14:30:55,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:30:55,338 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 100 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:30:55,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 68 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:30:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83358 states. [2022-01-18 14:30:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83358 to 70150. [2022-01-18 14:30:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70150 states, 70149 states have (on average 3.7759483385365438) internal successors, (264879), 70149 states have internal predecessors, (264879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:30:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70150 states to 70150 states and 264879 transitions. [2022-01-18 14:30:57,809 INFO L78 Accepts]: Start accepts. Automaton has 70150 states and 264879 transitions. Word has length 29 [2022-01-18 14:30:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:30:57,810 INFO L470 AbstractCegarLoop]: Abstraction has 70150 states and 264879 transitions. [2022-01-18 14:30:57,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 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) [2022-01-18 14:30:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 70150 states and 264879 transitions. [2022-01-18 14:30:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:30:57,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:30:57,953 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:30:57,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 14:30:58,159 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 [2022-01-18 14:30:58,159 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:30:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:30:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash -259129882, now seen corresponding path program 77 times [2022-01-18 14:30:58,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:30:58,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779756253] [2022-01-18 14:30:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:30:58,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:30:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:30:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:30:58,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:30:58,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779756253] [2022-01-18 14:30:58,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779756253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:30:58,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387099399] [2022-01-18 14:30:58,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:30:58,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:30:58,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:30:58,196 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) [2022-01-18 14:30:58,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 14:30:58,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:30:58,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:30:58,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:30:58,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:30:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:30:58,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:30:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:30:58,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387099399] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:30:58,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:30:58,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 14:30:58,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092631157] [2022-01-18 14:30:58,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:30:58,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 14:30:58,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:30:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 14:30:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:30:58,318 INFO L87 Difference]: Start difference. First operand 70150 states and 264879 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) [2022-01-18 14:31:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:00,036 INFO L93 Difference]: Finished difference Result 101990 states and 362414 transitions. [2022-01-18 14:31:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 14:31:00,037 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 [2022-01-18 14:31:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:00,453 INFO L225 Difference]: With dead ends: 101990 [2022-01-18 14:31:00,454 INFO L226 Difference]: Without dead ends: 101861 [2022-01-18 14:31:00,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1792 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=997, Invalid=3695, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 14:31:00,454 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 613 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:00,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 218 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:31:00,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101861 states. [2022-01-18 14:31:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101861 to 71426. [2022-01-18 14:31:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71426 states, 71425 states have (on average 3.7455512775638784) internal successors, (267526), 71425 states have internal predecessors, (267526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71426 states to 71426 states and 267526 transitions. [2022-01-18 14:31:03,406 INFO L78 Accepts]: Start accepts. Automaton has 71426 states and 267526 transitions. Word has length 29 [2022-01-18 14:31:03,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:03,406 INFO L470 AbstractCegarLoop]: Abstraction has 71426 states and 267526 transitions. [2022-01-18 14:31:03,406 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) [2022-01-18 14:31:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 71426 states and 267526 transitions. [2022-01-18 14:31:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:03,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:03,549 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:03,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 14:31:03,750 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 [2022-01-18 14:31:03,750 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:03,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1279370204, now seen corresponding path program 78 times [2022-01-18 14:31:03,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:03,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372899790] [2022-01-18 14:31:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:03,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:03,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:03,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372899790] [2022-01-18 14:31:03,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372899790] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:03,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062001635] [2022-01-18 14:31:03,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:31:03,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:03,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:03,783 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) [2022-01-18 14:31:03,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 14:31:03,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:31:03,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:03,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:03,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:03,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:03,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062001635] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:03,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:03,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-18 14:31:03,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685984135] [2022-01-18 14:31:03,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:03,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 14:31:03,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 14:31:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:31:03,898 INFO L87 Difference]: Start difference. First operand 71426 states and 267526 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) [2022-01-18 14:31:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:05,246 INFO L93 Difference]: Finished difference Result 89878 states and 325948 transitions. [2022-01-18 14:31:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 14:31:05,246 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 29 [2022-01-18 14:31:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:05,570 INFO L225 Difference]: With dead ends: 89878 [2022-01-18 14:31:05,570 INFO L226 Difference]: Without dead ends: 89245 [2022-01-18 14:31:05,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=312, Invalid=878, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 14:31:05,571 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 256 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:05,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 116 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:31:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89245 states. [2022-01-18 14:31:07,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89245 to 75760. [2022-01-18 14:31:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75760 states, 75759 states have (on average 3.767657968030201) internal successors, (285434), 75759 states have internal predecessors, (285434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75760 states to 75760 states and 285434 transitions. [2022-01-18 14:31:08,031 INFO L78 Accepts]: Start accepts. Automaton has 75760 states and 285434 transitions. Word has length 29 [2022-01-18 14:31:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:08,031 INFO L470 AbstractCegarLoop]: Abstraction has 75760 states and 285434 transitions. [2022-01-18 14:31:08,032 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) [2022-01-18 14:31:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 75760 states and 285434 transitions. [2022-01-18 14:31:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:08,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:08,185 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:08,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 14:31:08,385 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 [2022-01-18 14:31:08,385 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:08,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1479548508, now seen corresponding path program 79 times [2022-01-18 14:31:08,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:08,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443109650] [2022-01-18 14:31:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:08,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:08,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:08,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443109650] [2022-01-18 14:31:08,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443109650] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:08,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416842562] [2022-01-18 14:31:08,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:31:08,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:08,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:08,437 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) [2022-01-18 14:31:08,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 14:31:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:08,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:08,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:08,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:08,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416842562] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:08,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:08,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 14:31:08,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866479358] [2022-01-18 14:31:08,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:08,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 14:31:08,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:08,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 14:31:08,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:31:08,542 INFO L87 Difference]: Start difference. First operand 75760 states and 285434 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) [2022-01-18 14:31:09,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:09,740 INFO L93 Difference]: Finished difference Result 93724 states and 348647 transitions. [2022-01-18 14:31:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:31:09,741 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 29 [2022-01-18 14:31:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:10,163 INFO L225 Difference]: With dead ends: 93724 [2022-01-18 14:31:10,164 INFO L226 Difference]: Without dead ends: 93436 [2022-01-18 14:31:10,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:31:10,164 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 154 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:10,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 58 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:31:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93436 states. [2022-01-18 14:31:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93436 to 85633. [2022-01-18 14:31:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85633 states, 85632 states have (on average 3.7945627802690582) internal successors, (324936), 85632 states have internal predecessors, (324936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85633 states to 85633 states and 324936 transitions. [2022-01-18 14:31:12,939 INFO L78 Accepts]: Start accepts. Automaton has 85633 states and 324936 transitions. Word has length 29 [2022-01-18 14:31:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:12,940 INFO L470 AbstractCegarLoop]: Abstraction has 85633 states and 324936 transitions. [2022-01-18 14:31:12,940 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) [2022-01-18 14:31:12,940 INFO L276 IsEmpty]: Start isEmpty. Operand 85633 states and 324936 transitions. [2022-01-18 14:31:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:13,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:13,108 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:13,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 14:31:13,308 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 [2022-01-18 14:31:13,309 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:13,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:13,309 INFO L85 PathProgramCache]: Analyzing trace with hash 339992028, now seen corresponding path program 80 times [2022-01-18 14:31:13,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:13,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440336018] [2022-01-18 14:31:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:13,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:13,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:13,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440336018] [2022-01-18 14:31:13,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440336018] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:13,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044784225] [2022-01-18 14:31:13,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:31:13,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:13,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:13,345 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) [2022-01-18 14:31:13,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 14:31:13,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:31:13,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:13,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:13,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:13,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:13,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044784225] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:13,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:13,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:31:13,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941374785] [2022-01-18 14:31:13,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:13,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:31:13,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:13,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:31:13,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:31:13,463 INFO L87 Difference]: Start difference. First operand 85633 states and 324936 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:31:14,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:14,625 INFO L93 Difference]: Finished difference Result 101446 states and 375962 transitions. [2022-01-18 14:31:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:31:14,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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 29 [2022-01-18 14:31:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:15,062 INFO L225 Difference]: With dead ends: 101446 [2022-01-18 14:31:15,062 INFO L226 Difference]: Without dead ends: 101406 [2022-01-18 14:31:15,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:31:15,062 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 106 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:15,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 63 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:31:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101406 states. [2022-01-18 14:31:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101406 to 79251. [2022-01-18 14:31:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79251 states, 79250 states have (on average 3.7747381703470033) internal successors, (299148), 79250 states have internal predecessors, (299148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79251 states to 79251 states and 299148 transitions. [2022-01-18 14:31:17,889 INFO L78 Accepts]: Start accepts. Automaton has 79251 states and 299148 transitions. Word has length 29 [2022-01-18 14:31:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:17,889 INFO L470 AbstractCegarLoop]: Abstraction has 79251 states and 299148 transitions. [2022-01-18 14:31:17,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:31:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 79251 states and 299148 transitions. [2022-01-18 14:31:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:18,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:18,044 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:18,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-01-18 14:31:18,245 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 [2022-01-18 14:31:18,245 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:18,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2028172932, now seen corresponding path program 81 times [2022-01-18 14:31:18,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:18,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186122484] [2022-01-18 14:31:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:18,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:18,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186122484] [2022-01-18 14:31:18,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186122484] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24543674] [2022-01-18 14:31:18,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:31:18,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:18,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:18,286 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) [2022-01-18 14:31:18,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 14:31:18,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:31:18,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:18,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:18,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:18,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:18,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24543674] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:18,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:18,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-01-18 14:31:18,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72680608] [2022-01-18 14:31:18,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:18,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 14:31:18,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:18,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 14:31:18,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:31:18,418 INFO L87 Difference]: Start difference. First operand 79251 states and 299148 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) [2022-01-18 14:31:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:20,216 INFO L93 Difference]: Finished difference Result 112341 states and 405391 transitions. [2022-01-18 14:31:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 14:31:20,217 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 29 [2022-01-18 14:31:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:20,709 INFO L225 Difference]: With dead ends: 112341 [2022-01-18 14:31:20,709 INFO L226 Difference]: Without dead ends: 111125 [2022-01-18 14:31:20,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=785, Invalid=2637, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 14:31:20,709 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 510 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:20,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 211 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:31:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111125 states. [2022-01-18 14:31:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111125 to 80652. [2022-01-18 14:31:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80652 states, 80651 states have (on average 3.753431451562907) internal successors, (302718), 80651 states have internal predecessors, (302718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80652 states to 80652 states and 302718 transitions. [2022-01-18 14:31:23,740 INFO L78 Accepts]: Start accepts. Automaton has 80652 states and 302718 transitions. Word has length 29 [2022-01-18 14:31:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:23,740 INFO L470 AbstractCegarLoop]: Abstraction has 80652 states and 302718 transitions. [2022-01-18 14:31:23,741 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) [2022-01-18 14:31:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 80652 states and 302718 transitions. [2022-01-18 14:31:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:23,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:23,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:23,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-01-18 14:31:24,095 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 [2022-01-18 14:31:24,095 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:24,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:24,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1721742292, now seen corresponding path program 82 times [2022-01-18 14:31:24,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:24,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280883950] [2022-01-18 14:31:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:24,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:24,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:24,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280883950] [2022-01-18 14:31:24,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280883950] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:24,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261490534] [2022-01-18 14:31:24,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:31:24,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:24,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:24,142 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) [2022-01-18 14:31:24,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 14:31:24,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:31:24,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:24,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:24,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:24,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:24,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261490534] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:24,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:24,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:31:24,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935055634] [2022-01-18 14:31:24,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:24,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:31:24,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:24,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:31:24,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:31:24,285 INFO L87 Difference]: Start difference. First operand 80652 states and 302718 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:31:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:25,603 INFO L93 Difference]: Finished difference Result 90905 states and 334695 transitions. [2022-01-18 14:31:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:31:25,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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 29 [2022-01-18 14:31:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:25,953 INFO L225 Difference]: With dead ends: 90905 [2022-01-18 14:31:25,953 INFO L226 Difference]: Without dead ends: 90881 [2022-01-18 14:31:25,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:31:25,953 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 101 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:25,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 69 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:31:26,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90881 states. [2022-01-18 14:31:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90881 to 74200. [2022-01-18 14:31:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74200 states, 74199 states have (on average 3.73804229167509) internal successors, (277359), 74199 states have internal predecessors, (277359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74200 states to 74200 states and 277359 transitions. [2022-01-18 14:31:28,864 INFO L78 Accepts]: Start accepts. Automaton has 74200 states and 277359 transitions. Word has length 29 [2022-01-18 14:31:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:28,865 INFO L470 AbstractCegarLoop]: Abstraction has 74200 states and 277359 transitions. [2022-01-18 14:31:28,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:31:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 74200 states and 277359 transitions. [2022-01-18 14:31:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:29,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:29,003 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:29,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 14:31:29,203 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 [2022-01-18 14:31:29,204 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:29,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2146053528, now seen corresponding path program 83 times [2022-01-18 14:31:29,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:29,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858868976] [2022-01-18 14:31:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:29,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:29,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:29,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858868976] [2022-01-18 14:31:29,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858868976] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:29,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399133345] [2022-01-18 14:31:29,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:31:29,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:29,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:29,253 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) [2022-01-18 14:31:29,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 14:31:29,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 14:31:29,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:29,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:29,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:29,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:29,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399133345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:29,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:29,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 14:31:29,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119653012] [2022-01-18 14:31:29,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:29,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 14:31:29,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 14:31:29,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:31:29,354 INFO L87 Difference]: Start difference. First operand 74200 states and 277359 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) [2022-01-18 14:31:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:29,894 INFO L93 Difference]: Finished difference Result 83244 states and 303352 transitions. [2022-01-18 14:31:29,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:31:29,894 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 29 [2022-01-18 14:31:29,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:30,719 INFO L225 Difference]: With dead ends: 83244 [2022-01-18 14:31:30,720 INFO L226 Difference]: Without dead ends: 83153 [2022-01-18 14:31:30,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 14:31:30,720 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 102 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:30,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 74 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:31:30,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83153 states. [2022-01-18 14:31:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83153 to 74020. [2022-01-18 14:31:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74020 states, 74019 states have (on average 3.7140869236277174) internal successors, (274913), 74019 states have internal predecessors, (274913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74020 states to 74020 states and 274913 transitions. [2022-01-18 14:31:32,706 INFO L78 Accepts]: Start accepts. Automaton has 74020 states and 274913 transitions. Word has length 29 [2022-01-18 14:31:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:32,706 INFO L470 AbstractCegarLoop]: Abstraction has 74020 states and 274913 transitions. [2022-01-18 14:31:32,706 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) [2022-01-18 14:31:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 74020 states and 274913 transitions. [2022-01-18 14:31:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:32,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:32,849 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:32,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-01-18 14:31:33,049 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 [2022-01-18 14:31:33,049 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:33,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:33,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1126823240, now seen corresponding path program 84 times [2022-01-18 14:31:33,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:33,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944694236] [2022-01-18 14:31:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:33,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:33,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:33,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944694236] [2022-01-18 14:31:33,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944694236] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:33,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353297661] [2022-01-18 14:31:33,099 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:31:33,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:33,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:33,100 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) [2022-01-18 14:31:33,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 14:31:33,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 14:31:33,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:33,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:33,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:31:33,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:31:33,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353297661] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:33,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:33,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-01-18 14:31:33,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713983256] [2022-01-18 14:31:33,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:33,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 14:31:33,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:33,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 14:31:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:31:33,244 INFO L87 Difference]: Start difference. First operand 74020 states and 274913 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) [2022-01-18 14:31:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:34,932 INFO L93 Difference]: Finished difference Result 92419 states and 330610 transitions. [2022-01-18 14:31:34,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 14:31:34,932 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 29 [2022-01-18 14:31:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:35,283 INFO L225 Difference]: With dead ends: 92419 [2022-01-18 14:31:35,284 INFO L226 Difference]: Without dead ends: 91675 [2022-01-18 14:31:35,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=872, Invalid=3418, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 14:31:35,284 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 551 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:35,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 123 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:31:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91675 states. [2022-01-18 14:31:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91675 to 72840. [2022-01-18 14:31:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72840 states, 72839 states have (on average 3.7132030917502985) internal successors, (270466), 72839 states have internal predecessors, (270466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72840 states to 72840 states and 270466 transitions. [2022-01-18 14:31:37,882 INFO L78 Accepts]: Start accepts. Automaton has 72840 states and 270466 transitions. Word has length 29 [2022-01-18 14:31:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:37,882 INFO L470 AbstractCegarLoop]: Abstraction has 72840 states and 270466 transitions. [2022-01-18 14:31:37,882 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) [2022-01-18 14:31:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 72840 states and 270466 transitions. [2022-01-18 14:31:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:38,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:38,021 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:38,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 14:31:38,222 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 [2022-01-18 14:31:38,222 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:38,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2146387392, now seen corresponding path program 85 times [2022-01-18 14:31:38,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:38,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446458452] [2022-01-18 14:31:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:38,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:38,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:38,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446458452] [2022-01-18 14:31:38,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446458452] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:38,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481208687] [2022-01-18 14:31:38,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:31:38,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:38,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:38,251 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) [2022-01-18 14:31:38,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 14:31:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:38,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:38,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:38,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:38,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481208687] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:38,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:38,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:31:38,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541150161] [2022-01-18 14:31:38,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:38,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:31:38,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:31:38,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:31:38,352 INFO L87 Difference]: Start difference. First operand 72840 states and 270466 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:31:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:38,926 INFO L93 Difference]: Finished difference Result 86508 states and 319116 transitions. [2022-01-18 14:31:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 14:31:38,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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 29 [2022-01-18 14:31:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:39,809 INFO L225 Difference]: With dead ends: 86508 [2022-01-18 14:31:39,809 INFO L226 Difference]: Without dead ends: 86482 [2022-01-18 14:31:39,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:31:39,810 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:39,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 65 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:31:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86482 states. [2022-01-18 14:31:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86482 to 81664. [2022-01-18 14:31:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81664 states, 81663 states have (on average 3.7326696300650233) internal successors, (304821), 81663 states have internal predecessors, (304821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81664 states to 81664 states and 304821 transitions. [2022-01-18 14:31:41,819 INFO L78 Accepts]: Start accepts. Automaton has 81664 states and 304821 transitions. Word has length 29 [2022-01-18 14:31:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:41,820 INFO L470 AbstractCegarLoop]: Abstraction has 81664 states and 304821 transitions. [2022-01-18 14:31:41,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:31:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 81664 states and 304821 transitions. [2022-01-18 14:31:41,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:41,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:41,975 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:41,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-01-18 14:31:42,175 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 [2022-01-18 14:31:42,175 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1003979584, now seen corresponding path program 86 times [2022-01-18 14:31:42,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:42,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463337191] [2022-01-18 14:31:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:42,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:42,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:42,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463337191] [2022-01-18 14:31:42,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463337191] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:42,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730588480] [2022-01-18 14:31:42,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:31:42,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:42,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:42,210 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) [2022-01-18 14:31:42,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 14:31:42,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:31:42,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:42,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:42,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:42,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:42,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730588480] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:42,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:42,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:31:42,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635051970] [2022-01-18 14:31:42,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:42,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:31:42,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:31:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:31:42,315 INFO L87 Difference]: Start difference. First operand 81664 states and 304821 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:31:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:43,426 INFO L93 Difference]: Finished difference Result 92656 states and 340556 transitions. [2022-01-18 14:31:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:31:43,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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 29 [2022-01-18 14:31:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:43,788 INFO L225 Difference]: With dead ends: 92656 [2022-01-18 14:31:43,788 INFO L226 Difference]: Without dead ends: 92640 [2022-01-18 14:31:43,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:31:43,788 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 86 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:43,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 62 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:31:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92640 states. [2022-01-18 14:31:45,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92640 to 81791. [2022-01-18 14:31:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81791 states, 81790 states have (on average 3.7319354444308597) internal successors, (305235), 81790 states have internal predecessors, (305235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81791 states to 81791 states and 305235 transitions. [2022-01-18 14:31:46,565 INFO L78 Accepts]: Start accepts. Automaton has 81791 states and 305235 transitions. Word has length 29 [2022-01-18 14:31:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:46,565 INFO L470 AbstractCegarLoop]: Abstraction has 81791 states and 305235 transitions. [2022-01-18 14:31:46,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:31:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 81791 states and 305235 transitions. [2022-01-18 14:31:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:46,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:46,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:46,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 14:31:46,924 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 [2022-01-18 14:31:46,924 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:46,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:46,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1817668720, now seen corresponding path program 87 times [2022-01-18 14:31:46,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:46,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959751600] [2022-01-18 14:31:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:46,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:46,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:46,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959751600] [2022-01-18 14:31:46,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959751600] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:46,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250337616] [2022-01-18 14:31:46,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:31:46,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:46,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:46,957 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) [2022-01-18 14:31:46,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 14:31:46,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 14:31:46,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:46,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:46,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:31:47,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:31:47,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250337616] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:47,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:47,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-01-18 14:31:47,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609176698] [2022-01-18 14:31:47,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:47,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 14:31:47,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 14:31:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-18 14:31:47,099 INFO L87 Difference]: Start difference. First operand 81791 states and 305235 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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) [2022-01-18 14:31:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:49,227 INFO L93 Difference]: Finished difference Result 114861 states and 407014 transitions. [2022-01-18 14:31:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 14:31:49,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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 [2022-01-18 14:31:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:49,705 INFO L225 Difference]: With dead ends: 114861 [2022-01-18 14:31:49,706 INFO L226 Difference]: Without dead ends: 114608 [2022-01-18 14:31:49,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2310 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1418, Invalid=4902, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 14:31:49,706 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 460 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:49,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 238 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:31:49,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114608 states. [2022-01-18 14:31:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114608 to 78749. [2022-01-18 14:31:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78749 states, 78748 states have (on average 3.7166023264082897) internal successors, (292675), 78748 states have internal predecessors, (292675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78749 states to 78749 states and 292675 transitions. [2022-01-18 14:31:52,594 INFO L78 Accepts]: Start accepts. Automaton has 78749 states and 292675 transitions. Word has length 29 [2022-01-18 14:31:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:52,594 INFO L470 AbstractCegarLoop]: Abstraction has 78749 states and 292675 transitions. [2022-01-18 14:31:52,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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) [2022-01-18 14:31:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 78749 states and 292675 transitions. [2022-01-18 14:31:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:52,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:52,739 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:52,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-01-18 14:31:52,940 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 [2022-01-18 14:31:52,940 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1545051940, now seen corresponding path program 88 times [2022-01-18 14:31:52,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:52,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135797743] [2022-01-18 14:31:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:52,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:52,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:52,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135797743] [2022-01-18 14:31:52,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135797743] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:52,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253850232] [2022-01-18 14:31:52,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:31:52,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:52,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:52,970 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) [2022-01-18 14:31:52,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 14:31:52,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:31:52,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:52,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:52,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:53,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:31:53,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253850232] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:53,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:53,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 14:31:53,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154721447] [2022-01-18 14:31:53,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:53,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 14:31:53,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 14:31:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:31:53,100 INFO L87 Difference]: Start difference. First operand 78749 states and 292675 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:53,712 INFO L93 Difference]: Finished difference Result 83253 states and 305138 transitions. [2022-01-18 14:31:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:31:53,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2022-01-18 14:31:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:54,026 INFO L225 Difference]: With dead ends: 83253 [2022-01-18 14:31:54,026 INFO L226 Difference]: Without dead ends: 83004 [2022-01-18 14:31:54,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:31:54,027 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 108 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:54,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 73 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:31:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83004 states. [2022-01-18 14:31:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83004 to 78452. [2022-01-18 14:31:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78452 states, 78451 states have (on average 3.7164981963263695) internal successors, (291563), 78451 states have internal predecessors, (291563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78452 states to 78452 states and 291563 transitions. [2022-01-18 14:31:56,512 INFO L78 Accepts]: Start accepts. Automaton has 78452 states and 291563 transitions. Word has length 29 [2022-01-18 14:31:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:31:56,512 INFO L470 AbstractCegarLoop]: Abstraction has 78452 states and 291563 transitions. [2022-01-18 14:31:56,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:31:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 78452 states and 291563 transitions. [2022-01-18 14:31:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:31:56,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:31:56,660 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:31:56,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 14:31:56,860 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 [2022-01-18 14:31:56,860 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:31:56,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:31:56,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1628124328, now seen corresponding path program 89 times [2022-01-18 14:31:56,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:31:56,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440914324] [2022-01-18 14:31:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:31:56,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:31:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:31:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:31:56,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:31:56,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440914324] [2022-01-18 14:31:56,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440914324] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:31:56,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126812610] [2022-01-18 14:31:56,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:31:56,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:31:56,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:31:56,887 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) [2022-01-18 14:31:56,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 14:31:56,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:31:56,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:31:56,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:31:56,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:31:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:31:56,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:31:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 14:31:57,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126812610] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:31:57,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:31:57,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 14:31:57,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425612426] [2022-01-18 14:31:57,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:31:57,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 14:31:57,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:31:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 14:31:57,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:31:57,003 INFO L87 Difference]: Start difference. First operand 78452 states and 291563 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) [2022-01-18 14:31:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:31:58,147 INFO L93 Difference]: Finished difference Result 91588 states and 331854 transitions. [2022-01-18 14:31:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:31:58,147 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 29 [2022-01-18 14:31:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:31:58,500 INFO L225 Difference]: With dead ends: 91588 [2022-01-18 14:31:58,500 INFO L226 Difference]: Without dead ends: 91563 [2022-01-18 14:31:58,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 14:31:58,500 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 128 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:31:58,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 62 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:31:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91563 states. [2022-01-18 14:32:00,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91563 to 69184. [2022-01-18 14:32:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69184 states, 69183 states have (on average 3.684604599395805) internal successors, (254912), 69183 states have internal predecessors, (254912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69184 states to 69184 states and 254912 transitions. [2022-01-18 14:32:00,685 INFO L78 Accepts]: Start accepts. Automaton has 69184 states and 254912 transitions. Word has length 29 [2022-01-18 14:32:00,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:00,685 INFO L470 AbstractCegarLoop]: Abstraction has 69184 states and 254912 transitions. [2022-01-18 14:32:00,685 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) [2022-01-18 14:32:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 69184 states and 254912 transitions. [2022-01-18 14:32:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:01,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:01,281 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:01,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:01,502 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 [2022-01-18 14:32:01,502 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:01,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2017931548, now seen corresponding path program 90 times [2022-01-18 14:32:01,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:01,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716175497] [2022-01-18 14:32:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:01,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:01,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:01,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716175497] [2022-01-18 14:32:01,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716175497] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:01,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644362539] [2022-01-18 14:32:01,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:32:01,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:01,542 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) [2022-01-18 14:32:01,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 14:32:01,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 14:32:01,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:01,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:01,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:01,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:01,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644362539] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:01,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:01,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-01-18 14:32:01,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211162063] [2022-01-18 14:32:01,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:01,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 14:32:01,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 14:32:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:32:01,655 INFO L87 Difference]: Start difference. First operand 69184 states and 254912 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:02,260 INFO L93 Difference]: Finished difference Result 91643 states and 332188 transitions. [2022-01-18 14:32:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:32:02,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-01-18 14:32:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:02,614 INFO L225 Difference]: With dead ends: 91643 [2022-01-18 14:32:02,614 INFO L226 Difference]: Without dead ends: 91493 [2022-01-18 14:32:02,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:32:02,614 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 130 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:02,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 59 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:32:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91493 states. [2022-01-18 14:32:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91493 to 81312. [2022-01-18 14:32:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81312 states, 81311 states have (on average 3.7157457170616524) internal successors, (302131), 81311 states have internal predecessors, (302131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81312 states to 81312 states and 302131 transitions. [2022-01-18 14:32:05,254 INFO L78 Accepts]: Start accepts. Automaton has 81312 states and 302131 transitions. Word has length 29 [2022-01-18 14:32:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:05,254 INFO L470 AbstractCegarLoop]: Abstraction has 81312 states and 302131 transitions. [2022-01-18 14:32:05,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 81312 states and 302131 transitions. [2022-01-18 14:32:05,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:05,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:05,407 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:05,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:05,607 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 [2022-01-18 14:32:05,607 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:05,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:05,608 INFO L85 PathProgramCache]: Analyzing trace with hash 878375068, now seen corresponding path program 91 times [2022-01-18 14:32:05,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:05,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736433382] [2022-01-18 14:32:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:05,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:05,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:05,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736433382] [2022-01-18 14:32:05,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736433382] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:05,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91592665] [2022-01-18 14:32:05,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:32:05,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:05,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:05,632 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) [2022-01-18 14:32:05,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 14:32:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:05,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:05,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:05,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:05,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91592665] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:05,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:05,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:32:05,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230405657] [2022-01-18 14:32:05,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:05,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:32:05,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:05,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:32:05,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:32:05,735 INFO L87 Difference]: Start difference. First operand 81312 states and 302131 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:06,875 INFO L93 Difference]: Finished difference Result 92798 states and 336222 transitions. [2022-01-18 14:32:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:32:06,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-01-18 14:32:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:07,279 INFO L225 Difference]: With dead ends: 92798 [2022-01-18 14:32:07,279 INFO L226 Difference]: Without dead ends: 92764 [2022-01-18 14:32:07,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:32:07,279 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 122 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:07,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 56 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:32:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92764 states. [2022-01-18 14:32:09,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92764 to 81312. [2022-01-18 14:32:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81312 states, 81311 states have (on average 3.711490450246584) internal successors, (301785), 81311 states have internal predecessors, (301785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81312 states to 81312 states and 301785 transitions. [2022-01-18 14:32:10,114 INFO L78 Accepts]: Start accepts. Automaton has 81312 states and 301785 transitions. Word has length 29 [2022-01-18 14:32:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:10,114 INFO L470 AbstractCegarLoop]: Abstraction has 81312 states and 301785 transitions. [2022-01-18 14:32:10,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 81312 states and 301785 transitions. [2022-01-18 14:32:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:10,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:10,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:10,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:10,468 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 [2022-01-18 14:32:10,468 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:10,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:10,469 INFO L85 PathProgramCache]: Analyzing trace with hash -686242664, now seen corresponding path program 92 times [2022-01-18 14:32:10,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:10,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363548526] [2022-01-18 14:32:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:10,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:10,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:10,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363548526] [2022-01-18 14:32:10,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363548526] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:10,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418292826] [2022-01-18 14:32:10,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:32:10,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:10,497 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) [2022-01-18 14:32:10,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 14:32:10,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:32:10,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:10,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:10,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:10,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:10,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418292826] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:10,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:10,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 14:32:10,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039901457] [2022-01-18 14:32:10,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:10,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 14:32:10,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 14:32:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:32:10,604 INFO L87 Difference]: Start difference. First operand 81312 states and 301785 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:11,210 INFO L93 Difference]: Finished difference Result 90254 states and 327616 transitions. [2022-01-18 14:32:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 14:32:11,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-01-18 14:32:11,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:11,549 INFO L225 Difference]: With dead ends: 90254 [2022-01-18 14:32:11,549 INFO L226 Difference]: Without dead ends: 90088 [2022-01-18 14:32:11,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 14:32:11,549 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 111 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:11,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 70 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:32:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90088 states. [2022-01-18 14:32:13,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90088 to 82144. [2022-01-18 14:32:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82144 states, 82143 states have (on average 3.7036752979560035) internal successors, (304231), 82143 states have internal predecessors, (304231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82144 states to 82144 states and 304231 transitions. [2022-01-18 14:32:14,238 INFO L78 Accepts]: Start accepts. Automaton has 82144 states and 304231 transitions. Word has length 29 [2022-01-18 14:32:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:14,238 INFO L470 AbstractCegarLoop]: Abstraction has 82144 states and 304231 transitions. [2022-01-18 14:32:14,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 82144 states and 304231 transitions. [2022-01-18 14:32:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:14,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:14,398 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:14,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-01-18 14:32:14,598 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 [2022-01-18 14:32:14,599 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1336263132, now seen corresponding path program 93 times [2022-01-18 14:32:14,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:14,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843415635] [2022-01-18 14:32:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:14,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:14,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:14,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843415635] [2022-01-18 14:32:14,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843415635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:14,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979719104] [2022-01-18 14:32:14,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:32:14,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:14,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:14,629 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) [2022-01-18 14:32:14,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 14:32:14,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:32:14,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:14,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:14,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 14:32:14,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 14:32:14,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979719104] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:14,778 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:14,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 14:32:14,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164823351] [2022-01-18 14:32:14,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:14,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 14:32:14,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 14:32:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:32:14,779 INFO L87 Difference]: Start difference. First operand 82144 states and 304231 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) [2022-01-18 14:32:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:16,560 INFO L93 Difference]: Finished difference Result 132817 states and 476608 transitions. [2022-01-18 14:32:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 14:32:16,561 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 29 [2022-01-18 14:32:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:17,110 INFO L225 Difference]: With dead ends: 132817 [2022-01-18 14:32:17,111 INFO L226 Difference]: Without dead ends: 131296 [2022-01-18 14:32:17,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=684, Invalid=2738, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 14:32:17,111 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 379 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:17,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 153 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:32:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131296 states. [2022-01-18 14:32:20,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131296 to 92944. [2022-01-18 14:32:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92944 states, 92943 states have (on average 3.7134372680029695) internal successors, (345138), 92943 states have internal predecessors, (345138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92944 states to 92944 states and 345138 transitions. [2022-01-18 14:32:20,543 INFO L78 Accepts]: Start accepts. Automaton has 92944 states and 345138 transitions. Word has length 29 [2022-01-18 14:32:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:20,543 INFO L470 AbstractCegarLoop]: Abstraction has 92944 states and 345138 transitions. [2022-01-18 14:32:20,543 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) [2022-01-18 14:32:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 92944 states and 345138 transitions. [2022-01-18 14:32:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:21,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:21,243 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:21,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:21,467 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 [2022-01-18 14:32:21,467 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1181022552, now seen corresponding path program 94 times [2022-01-18 14:32:21,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:21,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970113665] [2022-01-18 14:32:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:21,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:21,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:21,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970113665] [2022-01-18 14:32:21,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970113665] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:21,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184056337] [2022-01-18 14:32:21,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:32:21,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:21,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:21,514 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) [2022-01-18 14:32:21,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 14:32:21,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:32:21,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:21,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:21,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:21,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:21,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184056337] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:21,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:21,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 8 [2022-01-18 14:32:21,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993347760] [2022-01-18 14:32:21,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:21,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 14:32:21,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 14:32:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:32:21,639 INFO L87 Difference]: Start difference. First operand 92944 states and 345138 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 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) [2022-01-18 14:32:22,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:22,359 INFO L93 Difference]: Finished difference Result 99988 states and 365305 transitions. [2022-01-18 14:32:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 14:32:22,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 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 29 [2022-01-18 14:32:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:22,761 INFO L225 Difference]: With dead ends: 99988 [2022-01-18 14:32:22,761 INFO L226 Difference]: Without dead ends: 99415 [2022-01-18 14:32:22,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 14:32:22,762 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 119 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:22,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 75 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:32:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99415 states. [2022-01-18 14:32:25,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99415 to 93063. [2022-01-18 14:32:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93063 states, 93062 states have (on average 3.708968214738561) internal successors, (345164), 93062 states have internal predecessors, (345164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93063 states to 93063 states and 345164 transitions. [2022-01-18 14:32:25,754 INFO L78 Accepts]: Start accepts. Automaton has 93063 states and 345164 transitions. Word has length 29 [2022-01-18 14:32:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:25,754 INFO L470 AbstractCegarLoop]: Abstraction has 93063 states and 345164 transitions. [2022-01-18 14:32:25,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 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) [2022-01-18 14:32:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 93063 states and 345164 transitions. [2022-01-18 14:32:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:25,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:25,928 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:25,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:26,128 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 [2022-01-18 14:32:26,128 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:26,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1604584940, now seen corresponding path program 95 times [2022-01-18 14:32:26,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:26,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049881209] [2022-01-18 14:32:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:26,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:26,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049881209] [2022-01-18 14:32:26,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049881209] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420742275] [2022-01-18 14:32:26,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:32:26,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:26,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:26,154 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) [2022-01-18 14:32:26,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 14:32:26,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:32:26,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:26,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:26,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:26,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:26,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420742275] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:26,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:26,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:32:26,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053998633] [2022-01-18 14:32:26,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:26,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:32:26,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:32:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:32:26,253 INFO L87 Difference]: Start difference. First operand 93063 states and 345164 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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) [2022-01-18 14:32:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:27,475 INFO L93 Difference]: Finished difference Result 103718 states and 378258 transitions. [2022-01-18 14:32:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:32:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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 [2022-01-18 14:32:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:27,903 INFO L225 Difference]: With dead ends: 103718 [2022-01-18 14:32:27,903 INFO L226 Difference]: Without dead ends: 103704 [2022-01-18 14:32:27,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:32:27,903 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:27,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 60 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:32:28,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103704 states. [2022-01-18 14:32:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103704 to 93577. [2022-01-18 14:32:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93577 states, 93576 states have (on average 3.7069868342309995) internal successors, (346885), 93576 states have internal predecessors, (346885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93577 states to 93577 states and 346885 transitions. [2022-01-18 14:32:30,858 INFO L78 Accepts]: Start accepts. Automaton has 93577 states and 346885 transitions. Word has length 29 [2022-01-18 14:32:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:30,858 INFO L470 AbstractCegarLoop]: Abstraction has 93577 states and 346885 transitions. [2022-01-18 14:32:30,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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) [2022-01-18 14:32:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 93577 states and 346885 transitions. [2022-01-18 14:32:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:31,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:31,033 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:31,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:31,235 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 [2022-01-18 14:32:31,235 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1863380264, now seen corresponding path program 96 times [2022-01-18 14:32:31,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:31,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174073709] [2022-01-18 14:32:31,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:31,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:31,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:31,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174073709] [2022-01-18 14:32:31,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174073709] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229628753] [2022-01-18 14:32:31,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:32:31,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:31,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:31,263 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) [2022-01-18 14:32:31,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 14:32:31,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:32:31,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:31,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:31,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:31,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:32:31,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229628753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:31,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:31,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-01-18 14:32:31,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000091180] [2022-01-18 14:32:31,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:31,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 14:32:31,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:31,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 14:32:31,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:32:31,386 INFO L87 Difference]: Start difference. First operand 93577 states and 346885 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) [2022-01-18 14:32:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:33,343 INFO L93 Difference]: Finished difference Result 133909 states and 474394 transitions. [2022-01-18 14:32:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 14:32:33,344 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 29 [2022-01-18 14:32:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:33,912 INFO L225 Difference]: With dead ends: 133909 [2022-01-18 14:32:33,912 INFO L226 Difference]: Without dead ends: 133703 [2022-01-18 14:32:33,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=957, Invalid=3873, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 14:32:33,912 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 280 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:33,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 189 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:32:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133703 states. [2022-01-18 14:32:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133703 to 100815. [2022-01-18 14:32:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100815 states, 100814 states have (on average 3.698752157438451) internal successors, (372886), 100814 states have internal predecessors, (372886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100815 states to 100815 states and 372886 transitions. [2022-01-18 14:32:37,388 INFO L78 Accepts]: Start accepts. Automaton has 100815 states and 372886 transitions. Word has length 29 [2022-01-18 14:32:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:37,388 INFO L470 AbstractCegarLoop]: Abstraction has 100815 states and 372886 transitions. [2022-01-18 14:32:37,388 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) [2022-01-18 14:32:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 100815 states and 372886 transitions. [2022-01-18 14:32:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:38,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:38,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:38,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:38,327 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 [2022-01-18 14:32:38,327 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2014052224, now seen corresponding path program 97 times [2022-01-18 14:32:38,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:38,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499406992] [2022-01-18 14:32:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:38,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:38,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499406992] [2022-01-18 14:32:38,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499406992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407012033] [2022-01-18 14:32:38,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:32:38,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:38,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:38,353 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) [2022-01-18 14:32:38,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 14:32:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:38,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:38,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:38,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:32:38,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:32:38,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407012033] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:38,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:38,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:32:38,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654692071] [2022-01-18 14:32:38,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:38,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:32:38,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:32:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:32:38,458 INFO L87 Difference]: Start difference. First operand 100815 states and 372886 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:39,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:39,296 INFO L93 Difference]: Finished difference Result 115798 states and 424818 transitions. [2022-01-18 14:32:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 14:32:39,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-01-18 14:32:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:39,773 INFO L225 Difference]: With dead ends: 115798 [2022-01-18 14:32:39,773 INFO L226 Difference]: Without dead ends: 115778 [2022-01-18 14:32:39,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:32:39,773 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:39,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 62 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:32:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115778 states. [2022-01-18 14:32:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115778 to 109664. [2022-01-18 14:32:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109664 states, 109663 states have (on average 3.711114961290499) internal successors, (406972), 109663 states have internal predecessors, (406972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109664 states to 109664 states and 406972 transitions. [2022-01-18 14:32:44,243 INFO L78 Accepts]: Start accepts. Automaton has 109664 states and 406972 transitions. Word has length 29 [2022-01-18 14:32:44,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:44,243 INFO L470 AbstractCegarLoop]: Abstraction has 109664 states and 406972 transitions. [2022-01-18 14:32:44,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 109664 states and 406972 transitions. [2022-01-18 14:32:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:44,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:44,458 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:44,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:44,659 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 [2022-01-18 14:32:44,659 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:44,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1987290884, now seen corresponding path program 98 times [2022-01-18 14:32:44,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:44,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253346562] [2022-01-18 14:32:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:44,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:44,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253346562] [2022-01-18 14:32:44,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253346562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438190609] [2022-01-18 14:32:44,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:32:44,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:44,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:44,685 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) [2022-01-18 14:32:44,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 14:32:44,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:32:44,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:44,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:44,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:32:44,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:32:44,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438190609] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:44,802 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:44,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:32:44,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100152865] [2022-01-18 14:32:44,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:44,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:32:44,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:44,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:32:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:32:44,802 INFO L87 Difference]: Start difference. First operand 109664 states and 406972 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:45,584 INFO L93 Difference]: Finished difference Result 122033 states and 446018 transitions. [2022-01-18 14:32:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:32:45,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-01-18 14:32:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:46,726 INFO L225 Difference]: With dead ends: 122033 [2022-01-18 14:32:46,727 INFO L226 Difference]: Without dead ends: 122020 [2022-01-18 14:32:46,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:32:46,727 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 89 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:46,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 59 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:32:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122020 states. [2022-01-18 14:32:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122020 to 109892. [2022-01-18 14:32:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109892 states, 109891 states have (on average 3.7100035489712533) internal successors, (407696), 109891 states have internal predecessors, (407696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109892 states to 109892 states and 407696 transitions. [2022-01-18 14:32:50,032 INFO L78 Accepts]: Start accepts. Automaton has 109892 states and 407696 transitions. Word has length 29 [2022-01-18 14:32:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:50,032 INFO L470 AbstractCegarLoop]: Abstraction has 109892 states and 407696 transitions. [2022-01-18 14:32:50,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 109892 states and 407696 transitions. [2022-01-18 14:32:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:50,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:50,223 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:50,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:50,423 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 [2022-01-18 14:32:50,423 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -285452240, now seen corresponding path program 99 times [2022-01-18 14:32:50,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:50,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753080582] [2022-01-18 14:32:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:50,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:32:50,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:50,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753080582] [2022-01-18 14:32:50,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753080582] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:50,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848131166] [2022-01-18 14:32:50,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:32:50,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:50,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:50,449 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) [2022-01-18 14:32:50,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 14:32:50,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:32:50,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:50,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:50,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:32:50,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:32:50,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848131166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:50,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:50,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2022-01-18 14:32:50,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711071306] [2022-01-18 14:32:50,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:50,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 14:32:50,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:50,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 14:32:50,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-18 14:32:50,578 INFO L87 Difference]: Start difference. First operand 109892 states and 407696 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 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) [2022-01-18 14:32:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:52,766 INFO L93 Difference]: Finished difference Result 160883 states and 570452 transitions. [2022-01-18 14:32:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 14:32:52,767 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 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 [2022-01-18 14:32:52,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:32:53,485 INFO L225 Difference]: With dead ends: 160883 [2022-01-18 14:32:53,486 INFO L226 Difference]: Without dead ends: 160587 [2022-01-18 14:32:53,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1029, Invalid=3663, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 14:32:53,486 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 295 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:32:53,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 223 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:32:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160587 states. [2022-01-18 14:32:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160587 to 117239. [2022-01-18 14:32:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117239 states, 117238 states have (on average 3.7077568706392126) internal successors, (434690), 117238 states have internal predecessors, (434690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117239 states to 117239 states and 434690 transitions. [2022-01-18 14:32:57,764 INFO L78 Accepts]: Start accepts. Automaton has 117239 states and 434690 transitions. Word has length 29 [2022-01-18 14:32:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:32:57,764 INFO L470 AbstractCegarLoop]: Abstraction has 117239 states and 434690 transitions. [2022-01-18 14:32:57,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 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) [2022-01-18 14:32:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 117239 states and 434690 transitions. [2022-01-18 14:32:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 14:32:57,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:32:57,973 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:32:57,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-01-18 14:32:58,174 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 [2022-01-18 14:32:58,174 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:32:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:32:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1194204820, now seen corresponding path program 100 times [2022-01-18 14:32:58,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:32:58,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949649764] [2022-01-18 14:32:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:32:58,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:32:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:32:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:58,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:32:58,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949649764] [2022-01-18 14:32:58,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949649764] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:32:58,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265832718] [2022-01-18 14:32:58,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:32:58,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:32:58,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:32:58,221 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) [2022-01-18 14:32:58,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 14:32:58,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:32:58,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:32:58,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:32:58,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:32:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:58,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:32:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:32:58,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265832718] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:32:58,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:32:58,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-01-18 14:32:58,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076274884] [2022-01-18 14:32:58,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:32:58,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 14:32:58,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:32:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 14:32:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 14:32:58,369 INFO L87 Difference]: Start difference. First operand 117239 states and 434690 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:32:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:32:59,831 INFO L93 Difference]: Finished difference Result 129999 states and 473907 transitions. [2022-01-18 14:32:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:32:59,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-01-18 14:32:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:33:00,404 INFO L225 Difference]: With dead ends: 129999 [2022-01-18 14:33:00,404 INFO L226 Difference]: Without dead ends: 129924 [2022-01-18 14:33:00,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-18 14:33:00,405 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:33:00,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 76 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:33:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129924 states. [2022-01-18 14:33:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129924 to 106840. [2022-01-18 14:33:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106840 states, 106839 states have (on average 3.68675296474134) internal successors, (393889), 106839 states have internal predecessors, (393889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106840 states to 106840 states and 393889 transitions. [2022-01-18 14:33:03,708 INFO L78 Accepts]: Start accepts. Automaton has 106840 states and 393889 transitions. Word has length 29 [2022-01-18 14:33:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:33:03,708 INFO L470 AbstractCegarLoop]: Abstraction has 106840 states and 393889 transitions. [2022-01-18 14:33:03,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:03,708 INFO L276 IsEmpty]: Start isEmpty. Operand 106840 states and 393889 transitions. [2022-01-18 14:33:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 14:33:03,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:33:03,920 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:33:03,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-01-18 14:33:04,120 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 [2022-01-18 14:33:04,121 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:33:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:33:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash 399155782, now seen corresponding path program 101 times [2022-01-18 14:33:04,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:33:04,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451651425] [2022-01-18 14:33:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:33:04,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:33:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:33:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 14:33:04,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:33:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451651425] [2022-01-18 14:33:04,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451651425] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:33:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718804262] [2022-01-18 14:33:04,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:33:04,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:33:04,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:33:04,152 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) [2022-01-18 14:33:04,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 14:33:04,186 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 14:33:04,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:33:04,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:33:04,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:33:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:04,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:33:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:04,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718804262] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:33:04,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:33:04,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:33:04,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095135557] [2022-01-18 14:33:04,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:33:04,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:33:04,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:33:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:33:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:33:04,295 INFO L87 Difference]: Start difference. First operand 106840 states and 393889 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:33:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:33:05,778 INFO L93 Difference]: Finished difference Result 146851 states and 532701 transitions. [2022-01-18 14:33:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:33:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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 31 [2022-01-18 14:33:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:33:06,427 INFO L225 Difference]: With dead ends: 146851 [2022-01-18 14:33:06,428 INFO L226 Difference]: Without dead ends: 146829 [2022-01-18 14:33:06,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:33:06,428 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 87 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:33:06,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 66 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:33:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146829 states. [2022-01-18 14:33:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146829 to 124569. [2022-01-18 14:33:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124569 states, 124568 states have (on average 3.7046673302934945) internal successors, (461483), 124568 states have internal predecessors, (461483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124569 states to 124569 states and 461483 transitions. [2022-01-18 14:33:10,790 INFO L78 Accepts]: Start accepts. Automaton has 124569 states and 461483 transitions. Word has length 31 [2022-01-18 14:33:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:33:10,791 INFO L470 AbstractCegarLoop]: Abstraction has 124569 states and 461483 transitions. [2022-01-18 14:33:10,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 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) [2022-01-18 14:33:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 124569 states and 461483 transitions. [2022-01-18 14:33:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 14:33:11,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:33:11,056 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:33:11,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-01-18 14:33:11,257 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 [2022-01-18 14:33:11,257 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:33:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:33:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 971005822, now seen corresponding path program 102 times [2022-01-18 14:33:11,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:33:11,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719294683] [2022-01-18 14:33:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:33:11,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:33:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:33:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:11,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:33:11,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719294683] [2022-01-18 14:33:11,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719294683] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:33:11,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315497815] [2022-01-18 14:33:11,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:33:11,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:33:11,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:33:11,291 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) [2022-01-18 14:33:11,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 14:33:11,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 14:33:11,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:33:11,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:33:11,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:33:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:33:11,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:33:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:33:11,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315497815] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:33:11,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:33:11,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 14:33:11,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4444556] [2022-01-18 14:33:11,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:33:11,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 14:33:11,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:33:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 14:33:11,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 14:33:11,413 INFO L87 Difference]: Start difference. First operand 124569 states and 461483 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) [2022-01-18 14:33:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:33:13,786 INFO L93 Difference]: Finished difference Result 182171 states and 650856 transitions. [2022-01-18 14:33:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 14:33:13,787 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 [2022-01-18 14:33:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:33:15,146 INFO L225 Difference]: With dead ends: 182171 [2022-01-18 14:33:15,146 INFO L226 Difference]: Without dead ends: 181348 [2022-01-18 14:33:15,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=675, Invalid=2405, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 14:33:15,147 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 334 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:33:15,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 277 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:33:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181348 states. [2022-01-18 14:33:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181348 to 128079. [2022-01-18 14:33:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128079 states, 128078 states have (on average 3.7052889645372353) internal successors, (474566), 128078 states have internal predecessors, (474566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128079 states to 128079 states and 474566 transitions. [2022-01-18 14:33:19,971 INFO L78 Accepts]: Start accepts. Automaton has 128079 states and 474566 transitions. Word has length 31 [2022-01-18 14:33:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:33:19,971 INFO L470 AbstractCegarLoop]: Abstraction has 128079 states and 474566 transitions. [2022-01-18 14:33:19,971 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) [2022-01-18 14:33:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 128079 states and 474566 transitions. [2022-01-18 14:33:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 14:33:20,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:33:20,253 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:33:20,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-18 14:33:20,453 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 [2022-01-18 14:33:20,453 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:33:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:33:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1921829582, now seen corresponding path program 103 times [2022-01-18 14:33:20,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:33:20,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778452410] [2022-01-18 14:33:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:33:20,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:33:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:33:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:33:20,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:33:20,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778452410] [2022-01-18 14:33:20,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778452410] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:33:20,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275788335] [2022-01-18 14:33:20,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:33:20,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:33:20,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:33:20,489 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) [2022-01-18 14:33:20,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 14:33:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:33:20,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:33:20,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:33:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:33:20,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:33:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:33:20,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275788335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:33:20,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:33:20,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-01-18 14:33:20,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886817789] [2022-01-18 14:33:20,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:33:20,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 14:33:20,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:33:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 14:33:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:33:20,634 INFO L87 Difference]: Start difference. First operand 128079 states and 474566 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) [2022-01-18 14:33:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:33:23,126 INFO L93 Difference]: Finished difference Result 155641 states and 553050 transitions. [2022-01-18 14:33:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 14:33:23,127 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 31 [2022-01-18 14:33:23,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:33:23,814 INFO L225 Difference]: With dead ends: 155641 [2022-01-18 14:33:23,814 INFO L226 Difference]: Without dead ends: 154498 [2022-01-18 14:33:23,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1200, Invalid=4806, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 14:33:23,815 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 392 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:33:23,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 197 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:33:23,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154498 states. [2022-01-18 14:33:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154498 to 127792. [2022-01-18 14:33:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127792 states, 127791 states have (on average 3.703907160911175) internal successors, (473326), 127791 states have internal predecessors, (473326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127792 states to 127792 states and 473326 transitions. [2022-01-18 14:33:28,130 INFO L78 Accepts]: Start accepts. Automaton has 127792 states and 473326 transitions. Word has length 31 [2022-01-18 14:33:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:33:28,130 INFO L470 AbstractCegarLoop]: Abstraction has 127792 states and 473326 transitions. [2022-01-18 14:33:28,130 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) [2022-01-18 14:33:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 127792 states and 473326 transitions. [2022-01-18 14:33:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 14:33:28,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:33:28,405 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:33:28,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-01-18 14:33:28,605 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 [2022-01-18 14:33:28,606 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:33:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:33:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1072708686, now seen corresponding path program 104 times [2022-01-18 14:33:28,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:33:28,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937689169] [2022-01-18 14:33:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:33:28,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:33:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:33:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:33:28,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:33:28,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937689169] [2022-01-18 14:33:28,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937689169] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:33:28,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033541950] [2022-01-18 14:33:28,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:33:28,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:33:28,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:33:28,633 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) [2022-01-18 14:33:28,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 14:33:28,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:33:28,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:33:28,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:33:28,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:33:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:33:28,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:33:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:33:28,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033541950] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:33:28,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:33:28,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 14:33:28,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400893633] [2022-01-18 14:33:28,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:33:28,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 14:33:28,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:33:28,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 14:33:28,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:33:28,759 INFO L87 Difference]: Start difference. First operand 127792 states and 473326 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) [2022-01-18 14:33:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:33:30,396 INFO L93 Difference]: Finished difference Result 145291 states and 526503 transitions. [2022-01-18 14:33:30,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:33:30,397 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 31 [2022-01-18 14:33:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:33:30,989 INFO L225 Difference]: With dead ends: 145291 [2022-01-18 14:33:30,989 INFO L226 Difference]: Without dead ends: 145239 [2022-01-18 14:33:30,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 14:33:30,990 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 88 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:33:30,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 72 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:33:31,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145239 states. [2022-01-18 14:33:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145239 to 126786. [2022-01-18 14:33:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126786 states, 126785 states have (on average 3.6935757384548644) internal successors, (468290), 126785 states have internal predecessors, (468290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126786 states to 126786 states and 468290 transitions. [2022-01-18 14:33:35,294 INFO L78 Accepts]: Start accepts. Automaton has 126786 states and 468290 transitions. Word has length 31 [2022-01-18 14:33:35,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:33:35,294 INFO L470 AbstractCegarLoop]: Abstraction has 126786 states and 468290 transitions. [2022-01-18 14:33:35,294 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) [2022-01-18 14:33:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 126786 states and 468290 transitions. [2022-01-18 14:33:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 14:33:35,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:33:35,560 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:33:35,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-01-18 14:33:35,761 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 [2022-01-18 14:33:35,761 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:33:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:33:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1985882102, now seen corresponding path program 105 times [2022-01-18 14:33:35,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:33:35,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818703794] [2022-01-18 14:33:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:33:35,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:33:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:33:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:33:35,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:33:35,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818703794] [2022-01-18 14:33:35,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818703794] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:33:35,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788499904] [2022-01-18 14:33:35,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:33:35,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:33:35,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:33:35,786 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) [2022-01-18 14:33:35,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 14:33:35,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 14:33:35,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:33:35,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:33:35,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:33:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:35,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:33:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:35,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788499904] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:33:35,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:33:35,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-01-18 14:33:35,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743867053] [2022-01-18 14:33:35,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:33:35,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 14:33:35,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:33:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 14:33:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:33:35,918 INFO L87 Difference]: Start difference. First operand 126786 states and 468290 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 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) [2022-01-18 14:33:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:33:38,428 INFO L93 Difference]: Finished difference Result 191360 states and 682084 transitions. [2022-01-18 14:33:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 14:33:38,428 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 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 [2022-01-18 14:33:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:33:39,877 INFO L225 Difference]: With dead ends: 191360 [2022-01-18 14:33:39,877 INFO L226 Difference]: Without dead ends: 190209 [2022-01-18 14:33:39,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=885, Invalid=3021, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 14:33:39,878 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 406 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:33:39,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 252 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 14:33:40,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190209 states. [2022-01-18 14:33:44,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190209 to 148929. [2022-01-18 14:33:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148929 states, 148928 states have (on average 3.716997475290073) internal successors, (553565), 148928 states have internal predecessors, (553565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148929 states to 148929 states and 553565 transitions. [2022-01-18 14:33:45,062 INFO L78 Accepts]: Start accepts. Automaton has 148929 states and 553565 transitions. Word has length 31 [2022-01-18 14:33:45,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:33:45,062 INFO L470 AbstractCegarLoop]: Abstraction has 148929 states and 553565 transitions. [2022-01-18 14:33:45,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 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) [2022-01-18 14:33:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 148929 states and 553565 transitions. [2022-01-18 14:33:46,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 14:33:46,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:33:46,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:33:46,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-01-18 14:33:46,335 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 [2022-01-18 14:33:46,336 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:33:46,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:33:46,336 INFO L85 PathProgramCache]: Analyzing trace with hash -463493366, now seen corresponding path program 106 times [2022-01-18 14:33:46,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:33:46,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596725351] [2022-01-18 14:33:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:33:46,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:33:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:33:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 14:33:46,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:33:46,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596725351] [2022-01-18 14:33:46,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596725351] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:33:46,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245522421] [2022-01-18 14:33:46,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:33:46,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:33:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:33:46,360 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) [2022-01-18 14:33:46,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 14:33:46,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:33:46,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:33:46,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:33:46,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:33:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:46,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:33:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:46,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245522421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:33:46,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:33:46,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 14:33:46,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853241401] [2022-01-18 14:33:46,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:33:46,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 14:33:46,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:33:46,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 14:33:46,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 14:33:46,461 INFO L87 Difference]: Start difference. First operand 148929 states and 553565 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:33:47,485 INFO L93 Difference]: Finished difference Result 163043 states and 594747 transitions. [2022-01-18 14:33:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 14:33:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-01-18 14:33:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:33:49,220 INFO L225 Difference]: With dead ends: 163043 [2022-01-18 14:33:49,220 INFO L226 Difference]: Without dead ends: 162855 [2022-01-18 14:33:49,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 14:33:49,221 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 118 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:33:49,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 54 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:33:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162855 states. [2022-01-18 14:33:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162855 to 148837. [2022-01-18 14:33:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148837 states, 148836 states have (on average 3.716110349646591) internal successors, (553091), 148836 states have internal predecessors, (553091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148837 states to 148837 states and 553091 transitions. [2022-01-18 14:33:54,553 INFO L78 Accepts]: Start accepts. Automaton has 148837 states and 553091 transitions. Word has length 31 [2022-01-18 14:33:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:33:54,553 INFO L470 AbstractCegarLoop]: Abstraction has 148837 states and 553091 transitions. [2022-01-18 14:33:54,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 148837 states and 553091 transitions. [2022-01-18 14:33:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 14:33:54,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:33:54,959 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:33:54,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 14:33:55,163 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 [2022-01-18 14:33:55,163 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:33:55,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:33:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1529683078, now seen corresponding path program 107 times [2022-01-18 14:33:55,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:33:55,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529739446] [2022-01-18 14:33:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:33:55,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:33:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:33:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:55,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:33:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529739446] [2022-01-18 14:33:55,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529739446] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:33:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044024301] [2022-01-18 14:33:55,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:33:55,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:33:55,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:33:55,192 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) [2022-01-18 14:33:55,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 14:33:55,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:33:55,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:33:55,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:33:55,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:33:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:55,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:33:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 14:33:55,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044024301] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:33:55,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:33:55,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-01-18 14:33:55,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272303189] [2022-01-18 14:33:55,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:33:55,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 14:33:55,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:33:55,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 14:33:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 14:33:55,299 INFO L87 Difference]: Start difference. First operand 148837 states and 553091 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:33:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:33:57,140 INFO L93 Difference]: Finished difference Result 164234 states and 598158 transitions. [2022-01-18 14:33:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 14:33:57,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-01-18 14:33:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:33:57,933 INFO L225 Difference]: With dead ends: 164234 [2022-01-18 14:33:57,934 INFO L226 Difference]: Without dead ends: 163802 [2022-01-18 14:33:57,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 14:33:57,934 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 118 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:33:57,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 62 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 14:33:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163802 states. [2022-01-18 14:34:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163802 to 148741. [2022-01-18 14:34:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148741 states, 148740 states have (on average 3.7144816458249292) internal successors, (552492), 148740 states have internal predecessors, (552492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148741 states to 148741 states and 552492 transitions. [2022-01-18 14:34:02,889 INFO L78 Accepts]: Start accepts. Automaton has 148741 states and 552492 transitions. Word has length 31 [2022-01-18 14:34:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:34:02,890 INFO L470 AbstractCegarLoop]: Abstraction has 148741 states and 552492 transitions. [2022-01-18 14:34:02,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 148741 states and 552492 transitions. [2022-01-18 14:34:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 14:34:03,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:34:03,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:34:03,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-01-18 14:34:03,435 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 [2022-01-18 14:34:03,436 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:34:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:34:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash -42711674, now seen corresponding path program 108 times [2022-01-18 14:34:03,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:34:03,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917714687] [2022-01-18 14:34:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:34:03,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:34:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:34:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 14:34:03,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:34:03,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917714687] [2022-01-18 14:34:03,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917714687] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:34:03,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748791668] [2022-01-18 14:34:03,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:34:03,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:03,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:34:03,464 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) [2022-01-18 14:34:03,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 14:34:03,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:34:03,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:34:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 14:34:03,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:34:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 14:34:03,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:34:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 14:34:03,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748791668] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:34:03,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:34:03,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-01-18 14:34:03,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605176225] [2022-01-18 14:34:03,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:34:03,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 14:34:03,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:34:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 14:34:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-01-18 14:34:03,605 INFO L87 Difference]: Start difference. First operand 148741 states and 552492 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 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) [2022-01-18 14:34:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:34:06,507 INFO L93 Difference]: Finished difference Result 219532 states and 789840 transitions. [2022-01-18 14:34:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 14:34:06,507 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 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 [2022-01-18 14:34:06,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:34:08,189 INFO L225 Difference]: With dead ends: 219532 [2022-01-18 14:34:08,189 INFO L226 Difference]: Without dead ends: 218264 [2022-01-18 14:34:08,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1222, Invalid=4784, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 14:34:08,190 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 446 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:34:08,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 193 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 14:34:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218264 states. [2022-01-18 14:34:12,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218264 to 150656. [2022-01-18 14:34:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150656 states, 150655 states have (on average 3.7046828847366498) internal successors, (558129), 150655 states have internal predecessors, (558129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150656 states to 150656 states and 558129 transitions. [2022-01-18 14:34:14,306 INFO L78 Accepts]: Start accepts. Automaton has 150656 states and 558129 transitions. Word has length 31 [2022-01-18 14:34:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:34:14,319 INFO L470 AbstractCegarLoop]: Abstraction has 150656 states and 558129 transitions. [2022-01-18 14:34:14,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 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) [2022-01-18 14:34:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 150656 states and 558129 transitions. [2022-01-18 14:34:14,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:34:14,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:34:14,792 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:34:14,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-01-18 14:34:14,993 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 [2022-01-18 14:34:14,993 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:34:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:34:14,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1144871670, now seen corresponding path program 109 times [2022-01-18 14:34:14,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:34:14,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660938801] [2022-01-18 14:34:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:34:14,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:34:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:34:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:15,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:34:15,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660938801] [2022-01-18 14:34:15,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660938801] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:34:15,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29352626] [2022-01-18 14:34:15,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:34:15,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:15,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:34:15,127 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) [2022-01-18 14:34:15,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 14:34:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:34:15,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:34:15,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:34:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:15,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:34:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:15,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29352626] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:34:15,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:34:15,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-01-18 14:34:15,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467121042] [2022-01-18 14:34:15,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:34:15,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 14:34:15,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:34:15,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 14:34:15,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:34:15,693 INFO L87 Difference]: Start difference. First operand 150656 states and 558129 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:17,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:34:17,720 INFO L93 Difference]: Finished difference Result 151997 states and 562077 transitions. [2022-01-18 14:34:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 14:34:17,721 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:34:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:34:18,434 INFO L225 Difference]: With dead ends: 151997 [2022-01-18 14:34:18,435 INFO L226 Difference]: Without dead ends: 151967 [2022-01-18 14:34:18,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:34:18,435 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 162 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:34:18,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 1495 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:34:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151967 states. [2022-01-18 14:34:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151967 to 151066. [2022-01-18 14:34:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151066 states, 151065 states have (on average 3.704319332737563) internal successors, (559593), 151065 states have internal predecessors, (559593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151066 states to 151066 states and 559593 transitions. [2022-01-18 14:34:23,081 INFO L78 Accepts]: Start accepts. Automaton has 151066 states and 559593 transitions. Word has length 33 [2022-01-18 14:34:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:34:23,081 INFO L470 AbstractCegarLoop]: Abstraction has 151066 states and 559593 transitions. [2022-01-18 14:34:23,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 151066 states and 559593 transitions. [2022-01-18 14:34:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:34:23,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:34:23,441 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:34:23,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-01-18 14:34:23,641 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 [2022-01-18 14:34:23,642 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:34:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:34:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1082616350, now seen corresponding path program 110 times [2022-01-18 14:34:23,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:34:23,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388893131] [2022-01-18 14:34:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:34:23,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:34:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:34:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:23,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:34:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388893131] [2022-01-18 14:34:23,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388893131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:34:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435252328] [2022-01-18 14:34:23,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:34:23,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:23,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:34:23,750 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) [2022-01-18 14:34:23,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 14:34:23,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:34:23,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:34:23,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:34:23,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:34:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:24,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:34:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:24,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435252328] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:34:24,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:34:24,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-01-18 14:34:24,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373427527] [2022-01-18 14:34:24,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:34:24,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 14:34:24,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:34:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 14:34:24,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:34:24,212 INFO L87 Difference]: Start difference. First operand 151066 states and 559593 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:34:26,098 INFO L93 Difference]: Finished difference Result 152681 states and 564508 transitions. [2022-01-18 14:34:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 14:34:26,098 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:34:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:34:26,791 INFO L225 Difference]: With dead ends: 152681 [2022-01-18 14:34:26,791 INFO L226 Difference]: Without dead ends: 152568 [2022-01-18 14:34:26,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:34:26,792 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 137 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:34:26,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1116 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:34:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152568 states. [2022-01-18 14:34:30,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152568 to 151986. [2022-01-18 14:34:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151986 states, 151985 states have (on average 3.7024311609698324) internal successors, (562714), 151985 states have internal predecessors, (562714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151986 states to 151986 states and 562714 transitions. [2022-01-18 14:34:31,380 INFO L78 Accepts]: Start accepts. Automaton has 151986 states and 562714 transitions. Word has length 33 [2022-01-18 14:34:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:34:31,380 INFO L470 AbstractCegarLoop]: Abstraction has 151986 states and 562714 transitions. [2022-01-18 14:34:31,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:31,380 INFO L276 IsEmpty]: Start isEmpty. Operand 151986 states and 562714 transitions. [2022-01-18 14:34:32,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:34:32,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:34:32,518 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:34:32,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 14:34:32,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-01-18 14:34:32,731 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:34:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:34:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1140926870, now seen corresponding path program 111 times [2022-01-18 14:34:32,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:34:32,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066182647] [2022-01-18 14:34:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:34:32,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:34:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:34:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:32,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:34:32,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066182647] [2022-01-18 14:34:32,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066182647] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:34:32,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755626516] [2022-01-18 14:34:32,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:34:32,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:34:32,824 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:34:32,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 14:34:32,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 14:34:32,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:34:32,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:34:32,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:34:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:33,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:34:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:33,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755626516] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:34:33,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:34:33,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:34:33,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028619435] [2022-01-18 14:34:33,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:34:33,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:34:33,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:34:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:34:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:34:33,278 INFO L87 Difference]: Start difference. First operand 151986 states and 562714 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:34:35,216 INFO L93 Difference]: Finished difference Result 155766 states and 574615 transitions. [2022-01-18 14:34:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:34:35,216 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:34:35,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:34:35,941 INFO L225 Difference]: With dead ends: 155766 [2022-01-18 14:34:35,941 INFO L226 Difference]: Without dead ends: 155672 [2022-01-18 14:34:35,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:34:35,941 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 146 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 14:34:35,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1416 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 14:34:36,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155672 states. [2022-01-18 14:34:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155672 to 153796. [2022-01-18 14:34:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153796 states, 153795 states have (on average 3.700920055918593) internal successors, (569183), 153795 states have internal predecessors, (569183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153796 states to 153796 states and 569183 transitions. [2022-01-18 14:34:40,848 INFO L78 Accepts]: Start accepts. Automaton has 153796 states and 569183 transitions. Word has length 33 [2022-01-18 14:34:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:34:40,849 INFO L470 AbstractCegarLoop]: Abstraction has 153796 states and 569183 transitions. [2022-01-18 14:34:40,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:40,849 INFO L276 IsEmpty]: Start isEmpty. Operand 153796 states and 569183 transitions. [2022-01-18 14:34:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:34:41,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:34:41,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:34:41,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-01-18 14:34:41,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:41,402 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:34:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:34:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 168119778, now seen corresponding path program 112 times [2022-01-18 14:34:41,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:34:41,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922097281] [2022-01-18 14:34:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:34:41,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:34:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:34:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:41,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:34:41,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922097281] [2022-01-18 14:34:41,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922097281] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:34:41,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330480335] [2022-01-18 14:34:41,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:34:41,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:41,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:34:41,507 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:34:41,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 14:34:41,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:34:41,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:34:41,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:34:41,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:34:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:41,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:34:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:42,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330480335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:34:42,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:34:42,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:34:42,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906754526] [2022-01-18 14:34:42,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:34:42,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:34:42,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:34:42,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:34:42,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:34:42,014 INFO L87 Difference]: Start difference. First operand 153796 states and 569183 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:43,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:34:43,811 INFO L93 Difference]: Finished difference Result 154538 states and 571281 transitions. [2022-01-18 14:34:43,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:34:43,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:34:43,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:34:44,464 INFO L225 Difference]: With dead ends: 154538 [2022-01-18 14:34:44,465 INFO L226 Difference]: Without dead ends: 154470 [2022-01-18 14:34:44,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:34:44,465 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 124 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:34:44,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 706 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:34:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154470 states. [2022-01-18 14:34:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154470 to 154097. [2022-01-18 14:34:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154097 states, 154096 states have (on average 3.70012849133008) internal successors, (570175), 154096 states have internal predecessors, (570175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154097 states to 154097 states and 570175 transitions. [2022-01-18 14:34:49,657 INFO L78 Accepts]: Start accepts. Automaton has 154097 states and 570175 transitions. Word has length 33 [2022-01-18 14:34:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:34:49,657 INFO L470 AbstractCegarLoop]: Abstraction has 154097 states and 570175 transitions. [2022-01-18 14:34:49,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 154097 states and 570175 transitions. [2022-01-18 14:34:50,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:34:50,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:34:50,107 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:34:50,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-01-18 14:34:50,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:50,308 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:34:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:34:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1814233434, now seen corresponding path program 113 times [2022-01-18 14:34:50,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:34:50,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736670503] [2022-01-18 14:34:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:34:50,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:34:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:34:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:50,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:34:50,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736670503] [2022-01-18 14:34:50,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736670503] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:34:50,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99539944] [2022-01-18 14:34:50,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:34:50,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:50,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:34:50,392 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:34:50,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 14:34:50,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 14:34:50,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:34:50,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:34:50,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:34:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:50,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:34:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:50,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99539944] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:34:50,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:34:50,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:34:50,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444510750] [2022-01-18 14:34:50,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:34:50,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:34:50,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:34:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:34:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:34:50,835 INFO L87 Difference]: Start difference. First operand 154097 states and 570175 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:34:52,850 INFO L93 Difference]: Finished difference Result 155092 states and 573062 transitions. [2022-01-18 14:34:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:34:52,851 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:34:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:34:54,213 INFO L225 Difference]: With dead ends: 155092 [2022-01-18 14:34:54,214 INFO L226 Difference]: Without dead ends: 155012 [2022-01-18 14:34:54,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:34:54,214 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 109 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:34:54,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1232 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:34:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155012 states. [2022-01-18 14:34:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155012 to 154563. [2022-01-18 14:34:57,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154563 states, 154562 states have (on average 3.69897516854078) internal successors, (571721), 154562 states have internal predecessors, (571721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154563 states to 154563 states and 571721 transitions. [2022-01-18 14:34:59,301 INFO L78 Accepts]: Start accepts. Automaton has 154563 states and 571721 transitions. Word has length 33 [2022-01-18 14:34:59,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:34:59,302 INFO L470 AbstractCegarLoop]: Abstraction has 154563 states and 571721 transitions. [2022-01-18 14:34:59,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:34:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 154563 states and 571721 transitions. [2022-01-18 14:34:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:34:59,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:34:59,684 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:34:59,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-01-18 14:34:59,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-01-18 14:34:59,884 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:34:59,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:34:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash -194142810, now seen corresponding path program 114 times [2022-01-18 14:34:59,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:34:59,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679373177] [2022-01-18 14:34:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:34:59,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:34:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:34:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:34:59,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:34:59,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679373177] [2022-01-18 14:34:59,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679373177] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:34:59,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754396772] [2022-01-18 14:34:59,976 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:34:59,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:34:59,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:34:59,977 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:34:59,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 14:34:59,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 14:34:59,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:35:00,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:35:00,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:35:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:00,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:35:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:00,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754396772] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:35:00,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:35:00,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:35:00,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333417541] [2022-01-18 14:35:00,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:35:00,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:35:00,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:35:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:35:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:35:00,427 INFO L87 Difference]: Start difference. First operand 154563 states and 571721 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:35:02,430 INFO L93 Difference]: Finished difference Result 157092 states and 579608 transitions. [2022-01-18 14:35:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:35:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:35:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:35:03,165 INFO L225 Difference]: With dead ends: 157092 [2022-01-18 14:35:03,165 INFO L226 Difference]: Without dead ends: 157062 [2022-01-18 14:35:03,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:35:03,165 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 158 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:35:03,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1328 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:35:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157062 states. [2022-01-18 14:35:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157062 to 155439. [2022-01-18 14:35:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155439 states, 155438 states have (on average 3.699455731545697) internal successors, (575036), 155438 states have internal predecessors, (575036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155439 states to 155439 states and 575036 transitions. [2022-01-18 14:35:07,860 INFO L78 Accepts]: Start accepts. Automaton has 155439 states and 575036 transitions. Word has length 33 [2022-01-18 14:35:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:35:07,860 INFO L470 AbstractCegarLoop]: Abstraction has 155439 states and 575036 transitions. [2022-01-18 14:35:07,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 155439 states and 575036 transitions. [2022-01-18 14:35:09,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:35:09,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:35:09,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:35:09,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-01-18 14:35:09,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-18 14:35:09,232 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:35:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:35:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash 406702426, now seen corresponding path program 115 times [2022-01-18 14:35:09,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:35:09,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218852990] [2022-01-18 14:35:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:35:09,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:35:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:35:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:09,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:35:09,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218852990] [2022-01-18 14:35:09,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218852990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:35:09,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735244309] [2022-01-18 14:35:09,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:35:09,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:35:09,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:35:09,325 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:35:09,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 14:35:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:35:09,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:35:09,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:35:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:09,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:35:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:09,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735244309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:35:09,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:35:09,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:35:09,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842349088] [2022-01-18 14:35:09,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:35:09,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:35:09,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:35:09,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:35:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:35:09,765 INFO L87 Difference]: Start difference. First operand 155439 states and 575036 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:35:11,757 INFO L93 Difference]: Finished difference Result 157948 states and 582829 transitions. [2022-01-18 14:35:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:35:11,758 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:35:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:35:12,485 INFO L225 Difference]: With dead ends: 157948 [2022-01-18 14:35:12,485 INFO L226 Difference]: Without dead ends: 157899 [2022-01-18 14:35:12,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:35:12,485 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 143 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 14:35:12,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 1542 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 14:35:12,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157899 states. [2022-01-18 14:35:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157899 to 156445. [2022-01-18 14:35:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156445 states, 156444 states have (on average 3.6992853672879753) internal successors, (578731), 156444 states have internal predecessors, (578731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156445 states to 156445 states and 578731 transitions. [2022-01-18 14:35:17,330 INFO L78 Accepts]: Start accepts. Automaton has 156445 states and 578731 transitions. Word has length 33 [2022-01-18 14:35:17,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:35:17,330 INFO L470 AbstractCegarLoop]: Abstraction has 156445 states and 578731 transitions. [2022-01-18 14:35:17,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:17,330 INFO L276 IsEmpty]: Start isEmpty. Operand 156445 states and 578731 transitions. [2022-01-18 14:35:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:35:17,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:35:17,683 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:35:17,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-01-18 14:35:17,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-01-18 14:35:17,884 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:35:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:35:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash 348391906, now seen corresponding path program 116 times [2022-01-18 14:35:17,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:35:17,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156078760] [2022-01-18 14:35:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:35:17,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:35:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:35:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:17,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:35:17,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156078760] [2022-01-18 14:35:17,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156078760] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:35:17,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652469965] [2022-01-18 14:35:17,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:35:17,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:35:17,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:35:17,973 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:35:17,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 14:35:17,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:35:17,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:35:17,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:35:17,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:35:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:18,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:35:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:18,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652469965] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:35:18,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:35:18,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:35:18,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301784945] [2022-01-18 14:35:18,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:35:18,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:35:18,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:35:18,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:35:18,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:35:18,420 INFO L87 Difference]: Start difference. First operand 156445 states and 578731 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:20,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:35:20,280 INFO L93 Difference]: Finished difference Result 157288 states and 581122 transitions. [2022-01-18 14:35:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:35:20,281 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:35:20,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:35:21,467 INFO L225 Difference]: With dead ends: 157288 [2022-01-18 14:35:21,467 INFO L226 Difference]: Without dead ends: 157208 [2022-01-18 14:35:21,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:35:21,467 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 128 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:35:21,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 835 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:35:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157208 states. [2022-01-18 14:35:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157208 to 156759. [2022-01-18 14:35:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156759 states, 156758 states have (on average 3.698509804922237) internal successors, (579771), 156758 states have internal predecessors, (579771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156759 states to 156759 states and 579771 transitions. [2022-01-18 14:35:26,267 INFO L78 Accepts]: Start accepts. Automaton has 156759 states and 579771 transitions. Word has length 33 [2022-01-18 14:35:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:35:26,267 INFO L470 AbstractCegarLoop]: Abstraction has 156759 states and 579771 transitions. [2022-01-18 14:35:26,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 156759 states and 579771 transitions. [2022-01-18 14:35:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:35:26,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:35:26,653 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:35:26,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-01-18 14:35:26,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-01-18 14:35:26,853 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:35:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:35:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash 164706334, now seen corresponding path program 117 times [2022-01-18 14:35:26,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:35:26,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164378477] [2022-01-18 14:35:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:35:26,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:35:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:35:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:26,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:35:26,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164378477] [2022-01-18 14:35:26,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164378477] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:35:26,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122305940] [2022-01-18 14:35:26,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:35:26,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:35:26,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:35:26,959 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:35:26,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 14:35:26,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 14:35:26,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:35:26,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:35:26,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:35:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:27,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:35:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:27,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122305940] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:35:27,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:35:27,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:35:27,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099398064] [2022-01-18 14:35:27,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:35:27,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:35:27,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:35:27,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:35:27,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:35:27,440 INFO L87 Difference]: Start difference. First operand 156759 states and 579771 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:35:29,389 INFO L93 Difference]: Finished difference Result 157922 states and 583230 transitions. [2022-01-18 14:35:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:35:29,389 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:35:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:35:30,150 INFO L225 Difference]: With dead ends: 157922 [2022-01-18 14:35:30,150 INFO L226 Difference]: Without dead ends: 157833 [2022-01-18 14:35:30,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:35:30,150 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 125 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:35:30,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 963 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:35:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157833 states. [2022-01-18 14:35:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157833 to 157362. [2022-01-18 14:35:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157362 states, 157361 states have (on average 3.697123175373822) internal successors, (581783), 157361 states have internal predecessors, (581783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157362 states to 157362 states and 581783 transitions. [2022-01-18 14:35:34,843 INFO L78 Accepts]: Start accepts. Automaton has 157362 states and 581783 transitions. Word has length 33 [2022-01-18 14:35:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:35:34,844 INFO L470 AbstractCegarLoop]: Abstraction has 157362 states and 581783 transitions. [2022-01-18 14:35:34,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 157362 states and 581783 transitions. [2022-01-18 14:35:35,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:35:35,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:35:35,201 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:35:35,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-01-18 14:35:35,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-01-18 14:35:35,404 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:35:35,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:35:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1817646878, now seen corresponding path program 118 times [2022-01-18 14:35:35,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:35:35,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877853104] [2022-01-18 14:35:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:35:35,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:35:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:35:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:35,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:35:35,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877853104] [2022-01-18 14:35:35,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877853104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:35:35,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908787490] [2022-01-18 14:35:35,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:35:35,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:35:35,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:35:35,492 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:35:35,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 14:35:35,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:35:35,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:35:35,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:35:35,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:35:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:36,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:35:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:36,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908787490] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:35:36,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:35:36,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:35:36,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738497151] [2022-01-18 14:35:36,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:35:36,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:35:36,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:35:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:35:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:35:36,676 INFO L87 Difference]: Start difference. First operand 157362 states and 581783 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:35:37,904 INFO L93 Difference]: Finished difference Result 158298 states and 584503 transitions. [2022-01-18 14:35:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:35:37,905 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:35:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:35:39,126 INFO L225 Difference]: With dead ends: 158298 [2022-01-18 14:35:39,126 INFO L226 Difference]: Without dead ends: 158187 [2022-01-18 14:35:39,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:35:39,127 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 131 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:35:39,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 909 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:35:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158187 states. [2022-01-18 14:35:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158187 to 157712. [2022-01-18 14:35:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157712 states, 157711 states have (on average 3.696571577125248) internal successors, (582990), 157711 states have internal predecessors, (582990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157712 states to 157712 states and 582990 transitions. [2022-01-18 14:35:44,014 INFO L78 Accepts]: Start accepts. Automaton has 157712 states and 582990 transitions. Word has length 33 [2022-01-18 14:35:44,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:35:44,014 INFO L470 AbstractCegarLoop]: Abstraction has 157712 states and 582990 transitions. [2022-01-18 14:35:44,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:44,014 INFO L276 IsEmpty]: Start isEmpty. Operand 157712 states and 582990 transitions. [2022-01-18 14:35:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:35:44,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:35:44,409 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:35:44,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-01-18 14:35:44,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-01-18 14:35:44,611 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:35:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:35:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash -197556254, now seen corresponding path program 119 times [2022-01-18 14:35:44,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:35:44,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029865076] [2022-01-18 14:35:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:35:44,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:35:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:35:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:44,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:35:44,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029865076] [2022-01-18 14:35:44,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029865076] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:35:44,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432628] [2022-01-18 14:35:44,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:35:44,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:35:44,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:35:44,707 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:35:44,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 14:35:44,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 14:35:44,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:35:44,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:35:44,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:35:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:45,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:35:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:45,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432628] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:35:45,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:35:45,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:35:45,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878765361] [2022-01-18 14:35:45,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:35:45,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:35:45,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:35:45,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:35:45,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:35:45,167 INFO L87 Difference]: Start difference. First operand 157712 states and 582990 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:47,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:35:47,165 INFO L93 Difference]: Finished difference Result 159135 states and 587247 transitions. [2022-01-18 14:35:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:35:47,165 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:35:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:35:47,924 INFO L225 Difference]: With dead ends: 159135 [2022-01-18 14:35:47,924 INFO L226 Difference]: Without dead ends: 158986 [2022-01-18 14:35:47,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:35:47,924 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 140 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:35:47,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1170 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:35:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158986 states. [2022-01-18 14:35:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158986 to 158378. [2022-01-18 14:35:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158378 states, 158377 states have (on average 3.6950883019630374) internal successors, (585217), 158377 states have internal predecessors, (585217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158378 states to 158378 states and 585217 transitions. [2022-01-18 14:35:52,573 INFO L78 Accepts]: Start accepts. Automaton has 158378 states and 585217 transitions. Word has length 33 [2022-01-18 14:35:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:35:52,573 INFO L470 AbstractCegarLoop]: Abstraction has 158378 states and 585217 transitions. [2022-01-18 14:35:52,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 158378 states and 585217 transitions. [2022-01-18 14:35:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:35:53,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:35:53,712 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:35:53,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-01-18 14:35:53,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:35:53,918 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:35:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:35:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1660573470, now seen corresponding path program 120 times [2022-01-18 14:35:53,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:35:53,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101315858] [2022-01-18 14:35:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:35:53,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:35:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:35:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:54,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:35:54,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101315858] [2022-01-18 14:35:54,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101315858] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:35:54,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932019441] [2022-01-18 14:35:54,015 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:35:54,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:35:54,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:35:54,016 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:35:54,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-18 14:35:54,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 14:35:54,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:35:54,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:35:54,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:35:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:54,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:35:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:35:54,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932019441] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:35:54,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:35:54,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:35:54,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308141133] [2022-01-18 14:35:54,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:35:54,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:35:54,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:35:54,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:35:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:35:54,477 INFO L87 Difference]: Start difference. First operand 158378 states and 585217 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:35:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:35:56,402 INFO L93 Difference]: Finished difference Result 161642 states and 595347 transitions. [2022-01-18 14:35:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:35:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:35:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:35:57,868 INFO L225 Difference]: With dead ends: 161642 [2022-01-18 14:35:57,868 INFO L226 Difference]: Without dead ends: 161594 [2022-01-18 14:35:57,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:35:57,869 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 149 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:35:57,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 1167 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:35:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161594 states. [2022-01-18 14:36:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161594 to 159796. [2022-01-18 14:36:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159796 states, 159795 states have (on average 3.6939203354297696) internal successors, (590270), 159795 states have internal predecessors, (590270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159796 states to 159796 states and 590270 transitions. [2022-01-18 14:36:03,211 INFO L78 Accepts]: Start accepts. Automaton has 159796 states and 590270 transitions. Word has length 33 [2022-01-18 14:36:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:36:03,211 INFO L470 AbstractCegarLoop]: Abstraction has 159796 states and 590270 transitions. [2022-01-18 14:36:03,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 159796 states and 590270 transitions. [2022-01-18 14:36:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:36:03,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:36:03,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:36:03,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-01-18 14:36:03,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:03,778 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:36:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:36:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash -321779742, now seen corresponding path program 121 times [2022-01-18 14:36:03,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:36:03,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628162414] [2022-01-18 14:36:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:36:03,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:36:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:03,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:36:03,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628162414] [2022-01-18 14:36:03,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628162414] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:36:03,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32638497] [2022-01-18 14:36:03,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:36:03,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:03,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:36:03,872 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:36:03,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-18 14:36:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:03,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:36:03,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:36:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:04,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:36:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:04,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32638497] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:36:04,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:36:04,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:36:04,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134551870] [2022-01-18 14:36:04,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:36:04,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:36:04,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:36:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:36:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:36:04,429 INFO L87 Difference]: Start difference. First operand 159796 states and 590270 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:36:06,438 INFO L93 Difference]: Finished difference Result 161171 states and 594381 transitions. [2022-01-18 14:36:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:36:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:36:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:36:07,132 INFO L225 Difference]: With dead ends: 161171 [2022-01-18 14:36:07,132 INFO L226 Difference]: Without dead ends: 161068 [2022-01-18 14:36:07,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:36:07,132 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 134 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 14:36:07,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1261 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 14:36:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161068 states. [2022-01-18 14:36:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161068 to 160420. [2022-01-18 14:36:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160420 states, 160419 states have (on average 3.692922908134323) internal successors, (592415), 160419 states have internal predecessors, (592415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160420 states to 160420 states and 592415 transitions. [2022-01-18 14:36:12,521 INFO L78 Accepts]: Start accepts. Automaton has 160420 states and 592415 transitions. Word has length 33 [2022-01-18 14:36:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:36:12,521 INFO L470 AbstractCegarLoop]: Abstraction has 160420 states and 592415 transitions. [2022-01-18 14:36:12,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:12,522 INFO L276 IsEmpty]: Start isEmpty. Operand 160420 states and 592415 transitions. [2022-01-18 14:36:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:36:12,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:36:12,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:36:12,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-01-18 14:36:13,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:13,100 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:36:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:36:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1298310882, now seen corresponding path program 122 times [2022-01-18 14:36:13,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:36:13,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209638605] [2022-01-18 14:36:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:36:13,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:36:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:13,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:36:13,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209638605] [2022-01-18 14:36:13,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209638605] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:36:13,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945744314] [2022-01-18 14:36:13,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:36:13,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:13,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:36:13,237 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:36:13,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-18 14:36:13,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:36:13,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:36:13,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:36:13,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:36:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:13,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:36:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:13,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945744314] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:36:13,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:36:13,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-01-18 14:36:13,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324772949] [2022-01-18 14:36:13,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:36:13,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 14:36:13,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:36:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 14:36:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:36:13,721 INFO L87 Difference]: Start difference. First operand 160420 states and 592415 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:36:15,735 INFO L93 Difference]: Finished difference Result 161955 states and 596972 transitions. [2022-01-18 14:36:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 14:36:15,735 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:36:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:36:16,506 INFO L225 Difference]: With dead ends: 161955 [2022-01-18 14:36:16,506 INFO L226 Difference]: Without dead ends: 161814 [2022-01-18 14:36:16,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:36:16,506 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 151 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:36:16,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 1307 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:36:16,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161814 states. [2022-01-18 14:36:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161814 to 159838. [2022-01-18 14:36:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159838 states, 159837 states have (on average 3.693406407777924) internal successors, (590343), 159837 states have internal predecessors, (590343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159838 states to 159838 states and 590343 transitions. [2022-01-18 14:36:21,218 INFO L78 Accepts]: Start accepts. Automaton has 159838 states and 590343 transitions. Word has length 33 [2022-01-18 14:36:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:36:21,218 INFO L470 AbstractCegarLoop]: Abstraction has 159838 states and 590343 transitions. [2022-01-18 14:36:21,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 159838 states and 590343 transitions. [2022-01-18 14:36:22,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:36:22,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:36:22,305 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:36:22,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-01-18 14:36:22,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:22,527 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:36:22,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:36:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash -867727902, now seen corresponding path program 123 times [2022-01-18 14:36:22,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:36:22,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928645151] [2022-01-18 14:36:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:36:22,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:36:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:22,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:36:22,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928645151] [2022-01-18 14:36:22,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928645151] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:36:22,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211044670] [2022-01-18 14:36:22,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:36:22,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:22,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:36:22,634 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:36:22,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-18 14:36:22,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 14:36:22,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:36:22,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:36:22,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:36:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:22,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:36:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:23,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211044670] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:36:23,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:36:23,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-01-18 14:36:23,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62323970] [2022-01-18 14:36:23,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:36:23,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 14:36:23,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:36:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 14:36:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:36:23,095 INFO L87 Difference]: Start difference. First operand 159838 states and 590343 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:36:24,523 INFO L93 Difference]: Finished difference Result 161271 states and 594591 transitions. [2022-01-18 14:36:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 14:36:24,524 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:36:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:36:25,837 INFO L225 Difference]: With dead ends: 161271 [2022-01-18 14:36:25,837 INFO L226 Difference]: Without dead ends: 161241 [2022-01-18 14:36:25,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:36:25,837 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 187 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 14:36:25,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1577 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 14:36:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161241 states. [2022-01-18 14:36:29,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161241 to 160172. [2022-01-18 14:36:29,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160172 states, 160171 states have (on average 3.6934089192175863) internal successors, (591577), 160171 states have internal predecessors, (591577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160172 states to 160172 states and 591577 transitions. [2022-01-18 14:36:30,891 INFO L78 Accepts]: Start accepts. Automaton has 160172 states and 591577 transitions. Word has length 33 [2022-01-18 14:36:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:36:30,891 INFO L470 AbstractCegarLoop]: Abstraction has 160172 states and 591577 transitions. [2022-01-18 14:36:30,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:30,892 INFO L276 IsEmpty]: Start isEmpty. Operand 160172 states and 591577 transitions. [2022-01-18 14:36:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:36:31,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:36:31,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:36:31,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-01-18 14:36:31,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-01-18 14:36:31,468 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:36:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:36:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash -601756176, now seen corresponding path program 124 times [2022-01-18 14:36:31,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:36:31,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536104211] [2022-01-18 14:36:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:36:31,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:36:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:31,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:36:31,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536104211] [2022-01-18 14:36:31,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536104211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:36:31,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653261759] [2022-01-18 14:36:31,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:36:31,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:31,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:36:31,597 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:36:31,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-18 14:36:31,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:36:31,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:36:31,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:36:31,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:36:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:32,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:36:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:32,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653261759] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:36:32,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:36:32,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-01-18 14:36:32,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599768454] [2022-01-18 14:36:32,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:36:32,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 14:36:32,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:36:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 14:36:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:36:32,150 INFO L87 Difference]: Start difference. First operand 160172 states and 591577 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:36:34,162 INFO L93 Difference]: Finished difference Result 161887 states and 596640 transitions. [2022-01-18 14:36:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 14:36:34,162 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:36:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:36:34,887 INFO L225 Difference]: With dead ends: 161887 [2022-01-18 14:36:34,887 INFO L226 Difference]: Without dead ends: 161831 [2022-01-18 14:36:34,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:36:34,887 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 156 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:36:34,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1394 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:36:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161831 states. [2022-01-18 14:36:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161831 to 160858. [2022-01-18 14:36:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160858 states, 160857 states have (on average 3.693081432576761) internal successors, (594058), 160857 states have internal predecessors, (594058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160858 states to 160858 states and 594058 transitions. [2022-01-18 14:36:40,332 INFO L78 Accepts]: Start accepts. Automaton has 160858 states and 594058 transitions. Word has length 33 [2022-01-18 14:36:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:36:40,332 INFO L470 AbstractCegarLoop]: Abstraction has 160858 states and 594058 transitions. [2022-01-18 14:36:40,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 160858 states and 594058 transitions. [2022-01-18 14:36:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:36:40,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:36:40,721 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:36:40,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-01-18 14:36:40,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-01-18 14:36:40,922 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:36:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:36:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1578508068, now seen corresponding path program 125 times [2022-01-18 14:36:40,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:36:40,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329334729] [2022-01-18 14:36:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:36:40,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:36:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:36:41,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:36:41,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329334729] [2022-01-18 14:36:41,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329334729] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:36:41,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32051832] [2022-01-18 14:36:41,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:36:41,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:41,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:36:41,004 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:36:41,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-18 14:36:41,027 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 14:36:41,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:36:41,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:36:41,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:36:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:41,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:36:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:36:41,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32051832] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:36:41,434 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:36:41,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:36:41,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594365696] [2022-01-18 14:36:41,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:36:41,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:36:41,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:36:41,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:36:41,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:36:41,434 INFO L87 Difference]: Start difference. First operand 160858 states and 594058 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:36:43,278 INFO L93 Difference]: Finished difference Result 161509 states and 595921 transitions. [2022-01-18 14:36:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:36:43,278 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 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 33 [2022-01-18 14:36:43,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:36:44,007 INFO L225 Difference]: With dead ends: 161509 [2022-01-18 14:36:44,007 INFO L226 Difference]: Without dead ends: 161399 [2022-01-18 14:36:44,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:36:44,007 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 93 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:36:44,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 738 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:36:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161399 states. [2022-01-18 14:36:47,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161399 to 161175. [2022-01-18 14:36:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161175 states, 161174 states have (on average 3.692239443086354) internal successors, (595093), 161174 states have internal predecessors, (595093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161175 states to 161175 states and 595093 transitions. [2022-01-18 14:36:48,721 INFO L78 Accepts]: Start accepts. Automaton has 161175 states and 595093 transitions. Word has length 33 [2022-01-18 14:36:48,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:36:48,721 INFO L470 AbstractCegarLoop]: Abstraction has 161175 states and 595093 transitions. [2022-01-18 14:36:48,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 161175 states and 595093 transitions. [2022-01-18 14:36:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:36:49,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:36:49,917 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:36:49,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-01-18 14:36:50,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:50,132 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:36:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:36:50,132 INFO L85 PathProgramCache]: Analyzing trace with hash 734106016, now seen corresponding path program 126 times [2022-01-18 14:36:50,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:36:50,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506639568] [2022-01-18 14:36:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:36:50,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:36:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:36:50,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:36:50,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506639568] [2022-01-18 14:36:50,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506639568] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:36:50,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070095592] [2022-01-18 14:36:50,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:36:50,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:50,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:36:50,220 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:36:50,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-18 14:36:50,243 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 14:36:50,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:36:50,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:36:50,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:36:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:36:50,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:36:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:36:50,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070095592] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:36:50,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:36:50,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:36:50,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884132215] [2022-01-18 14:36:50,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:36:50,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:36:50,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:36:50,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:36:50,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:36:50,677 INFO L87 Difference]: Start difference. First operand 161175 states and 595093 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:36:51,883 INFO L93 Difference]: Finished difference Result 161894 states and 597119 transitions. [2022-01-18 14:36:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:36:51,883 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 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 33 [2022-01-18 14:36:51,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:36:53,221 INFO L225 Difference]: With dead ends: 161894 [2022-01-18 14:36:53,221 INFO L226 Difference]: Without dead ends: 161752 [2022-01-18 14:36:53,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:36:53,221 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 105 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:36:53,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 859 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:36:53,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161752 states. [2022-01-18 14:36:56,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161752 to 161482. [2022-01-18 14:36:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161482 states, 161481 states have (on average 3.6913321071828884) internal successors, (596080), 161481 states have internal predecessors, (596080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161482 states to 161482 states and 596080 transitions. [2022-01-18 14:36:58,768 INFO L78 Accepts]: Start accepts. Automaton has 161482 states and 596080 transitions. Word has length 33 [2022-01-18 14:36:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:36:58,768 INFO L470 AbstractCegarLoop]: Abstraction has 161482 states and 596080 transitions. [2022-01-18 14:36:58,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:36:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 161482 states and 596080 transitions. [2022-01-18 14:36:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:36:59,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:36:59,256 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:36:59,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-01-18 14:36:59,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-01-18 14:36:59,471 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:36:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:36:59,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1940770656, now seen corresponding path program 127 times [2022-01-18 14:36:59,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:36:59,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229271059] [2022-01-18 14:36:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:36:59,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:36:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:36:59,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:36:59,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229271059] [2022-01-18 14:36:59,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229271059] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:36:59,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952506444] [2022-01-18 14:36:59,594 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:36:59,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:36:59,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:36:59,596 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:36:59,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-18 14:36:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:36:59,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:36:59,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:37:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:00,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:37:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:37:00,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952506444] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:37:00,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:37:00,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:37:00,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821738797] [2022-01-18 14:37:00,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:37:00,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:37:00,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:37:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:37:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:37:00,195 INFO L87 Difference]: Start difference. First operand 161482 states and 596080 transitions. Second operand has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:37:02,593 INFO L93 Difference]: Finished difference Result 163821 states and 603284 transitions. [2022-01-18 14:37:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:37:02,594 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 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 33 [2022-01-18 14:37:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:37:03,350 INFO L225 Difference]: With dead ends: 163821 [2022-01-18 14:37:03,350 INFO L226 Difference]: Without dead ends: 163662 [2022-01-18 14:37:03,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:37:03,350 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 137 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 14:37:03,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1151 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 14:37:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163662 states. [2022-01-18 14:37:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163662 to 162592. [2022-01-18 14:37:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162592 states, 162591 states have (on average 3.689693771487967) internal successors, (599911), 162591 states have internal predecessors, (599911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162592 states to 162592 states and 599911 transitions. [2022-01-18 14:37:08,104 INFO L78 Accepts]: Start accepts. Automaton has 162592 states and 599911 transitions. Word has length 33 [2022-01-18 14:37:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:37:08,104 INFO L470 AbstractCegarLoop]: Abstraction has 162592 states and 599911 transitions. [2022-01-18 14:37:08,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 162592 states and 599911 transitions. [2022-01-18 14:37:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:37:09,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:37:09,302 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:37:09,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-01-18 14:37:09,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-18 14:37:09,503 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:37:09,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:37:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash -438246880, now seen corresponding path program 128 times [2022-01-18 14:37:09,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:37:09,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140736041] [2022-01-18 14:37:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:37:09,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:37:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:37:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:09,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:37:09,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140736041] [2022-01-18 14:37:09,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140736041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:37:09,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403376132] [2022-01-18 14:37:09,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:37:09,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:09,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:37:09,587 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:37:09,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-18 14:37:09,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:37:09,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:37:09,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:37:09,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:37:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:09,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:37:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:10,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403376132] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:37:10,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:37:10,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:37:10,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913376300] [2022-01-18 14:37:10,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:37:10,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:37:10,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:37:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:37:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:37:10,034 INFO L87 Difference]: Start difference. First operand 162592 states and 599911 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:37:11,925 INFO L93 Difference]: Finished difference Result 163885 states and 603606 transitions. [2022-01-18 14:37:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:37:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:37:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:37:12,687 INFO L225 Difference]: With dead ends: 163885 [2022-01-18 14:37:12,687 INFO L226 Difference]: Without dead ends: 163801 [2022-01-18 14:37:12,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:37:12,687 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 132 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:37:12,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 953 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:37:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163801 states. [2022-01-18 14:37:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163801 to 162865. [2022-01-18 14:37:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162865 states, 162864 states have (on average 3.6899498968464486) internal successors, (600960), 162864 states have internal predecessors, (600960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162865 states to 162865 states and 600960 transitions. [2022-01-18 14:37:17,544 INFO L78 Accepts]: Start accepts. Automaton has 162865 states and 600960 transitions. Word has length 33 [2022-01-18 14:37:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:37:17,544 INFO L470 AbstractCegarLoop]: Abstraction has 162865 states and 600960 transitions. [2022-01-18 14:37:17,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 162865 states and 600960 transitions. [2022-01-18 14:37:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:37:17,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:37:17,916 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:37:17,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-01-18 14:37:18,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:18,117 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:37:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:37:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash -581181848, now seen corresponding path program 129 times [2022-01-18 14:37:18,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:37:18,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913182393] [2022-01-18 14:37:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:37:18,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:37:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:37:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:18,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:37:18,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913182393] [2022-01-18 14:37:18,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913182393] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:37:18,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864767442] [2022-01-18 14:37:18,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:37:18,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:37:18,209 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:37:18,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-18 14:37:18,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 14:37:18,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:37:18,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:37:18,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:37:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:19,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:37:19,431 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:19,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864767442] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:37:19,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:37:19,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:37:19,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180197818] [2022-01-18 14:37:19,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:37:19,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:37:19,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:37:19,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:37:19,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:37:19,432 INFO L87 Difference]: Start difference. First operand 162865 states and 600960 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:20,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:37:20,840 INFO L93 Difference]: Finished difference Result 165352 states and 608670 transitions. [2022-01-18 14:37:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:37:20,841 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:37:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:37:22,077 INFO L225 Difference]: With dead ends: 165352 [2022-01-18 14:37:22,077 INFO L226 Difference]: Without dead ends: 165309 [2022-01-18 14:37:22,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:37:22,078 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 138 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:37:22,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1487 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:37:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165309 states. [2022-01-18 14:37:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165309 to 163609. [2022-01-18 14:37:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163609 states, 163608 states have (on average 3.6906997212850228) internal successors, (603828), 163608 states have internal predecessors, (603828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163609 states to 163609 states and 603828 transitions. [2022-01-18 14:37:27,121 INFO L78 Accepts]: Start accepts. Automaton has 163609 states and 603828 transitions. Word has length 33 [2022-01-18 14:37:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:37:27,121 INFO L470 AbstractCegarLoop]: Abstraction has 163609 states and 603828 transitions. [2022-01-18 14:37:27,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 163609 states and 603828 transitions. [2022-01-18 14:37:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:37:27,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:37:27,563 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:37:27,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-01-18 14:37:27,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:27,764 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:37:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:37:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1095257944, now seen corresponding path program 130 times [2022-01-18 14:37:27,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:37:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014913491] [2022-01-18 14:37:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:37:27,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:37:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:37:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:27,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:37:27,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014913491] [2022-01-18 14:37:27,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014913491] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:37:27,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059231699] [2022-01-18 14:37:27,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:37:27,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:27,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:37:27,877 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:37:27,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-18 14:37:27,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:37:27,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:37:27,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:37:27,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:37:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:28,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:37:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:28,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059231699] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:37:28,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:37:28,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:37:28,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885958559] [2022-01-18 14:37:28,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:37:28,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:37:28,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:37:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:37:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:37:28,346 INFO L87 Difference]: Start difference. First operand 163609 states and 603828 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:37:30,286 INFO L93 Difference]: Finished difference Result 166873 states and 614008 transitions. [2022-01-18 14:37:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:37:30,287 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:37:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:37:31,025 INFO L225 Difference]: With dead ends: 166873 [2022-01-18 14:37:31,025 INFO L226 Difference]: Without dead ends: 166761 [2022-01-18 14:37:31,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:37:31,026 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 95 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:37:31,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 995 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:37:31,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166761 states. [2022-01-18 14:37:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166761 to 165315. [2022-01-18 14:37:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165315 states, 165314 states have (on average 3.6875037806840316) internal successors, (609596), 165314 states have internal predecessors, (609596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165315 states to 165315 states and 609596 transitions. [2022-01-18 14:37:36,422 INFO L78 Accepts]: Start accepts. Automaton has 165315 states and 609596 transitions. Word has length 33 [2022-01-18 14:37:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:37:36,423 INFO L470 AbstractCegarLoop]: Abstraction has 165315 states and 609596 transitions. [2022-01-18 14:37:36,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 165315 states and 609596 transitions. [2022-01-18 14:37:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:37:36,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:37:36,828 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:37:36,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-01-18 14:37:37,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-01-18 14:37:37,028 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:37:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:37:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash -792621028, now seen corresponding path program 131 times [2022-01-18 14:37:37,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:37:37,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54643275] [2022-01-18 14:37:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:37:37,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:37:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:37:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:37,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:37:37,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54643275] [2022-01-18 14:37:37,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54643275] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:37:37,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502822966] [2022-01-18 14:37:37,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:37:37,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:37,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:37:37,145 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:37:37,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-18 14:37:37,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 14:37:37,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:37:37,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:37:37,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:37:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:37,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:37:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:37,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502822966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:37:37,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:37:37,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-01-18 14:37:37,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364900471] [2022-01-18 14:37:37,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:37:37,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 14:37:37,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:37:37,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 14:37:37,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:37:37,619 INFO L87 Difference]: Start difference. First operand 165315 states and 609596 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:37:39,578 INFO L93 Difference]: Finished difference Result 168882 states and 620260 transitions. [2022-01-18 14:37:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 14:37:39,579 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:37:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:37:40,366 INFO L225 Difference]: With dead ends: 168882 [2022-01-18 14:37:40,366 INFO L226 Difference]: Without dead ends: 168770 [2022-01-18 14:37:40,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:37:40,366 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 105 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:37:40,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1350 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 14:37:40,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168770 states. [2022-01-18 14:37:44,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168770 to 164923. [2022-01-18 14:37:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164923 states, 164922 states have (on average 3.687864566279817) internal successors, (608210), 164922 states have internal predecessors, (608210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164923 states to 164923 states and 608210 transitions. [2022-01-18 14:37:45,699 INFO L78 Accepts]: Start accepts. Automaton has 164923 states and 608210 transitions. Word has length 33 [2022-01-18 14:37:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:37:45,699 INFO L470 AbstractCegarLoop]: Abstraction has 164923 states and 608210 transitions. [2022-01-18 14:37:45,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 164923 states and 608210 transitions. [2022-01-18 14:37:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:37:46,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:37:46,150 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:37:46,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-01-18 14:37:46,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:46,350 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:37:46,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:37:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -597937696, now seen corresponding path program 132 times [2022-01-18 14:37:46,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:37:46,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806527988] [2022-01-18 14:37:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:37:46,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:37:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:37:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:46,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:37:46,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806527988] [2022-01-18 14:37:46,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806527988] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:37:46,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475828019] [2022-01-18 14:37:46,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:37:46,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:46,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:37:46,475 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:37:46,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-18 14:37:46,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 14:37:46,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:37:46,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:37:46,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:37:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:46,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:37:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:37:46,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475828019] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:37:46,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:37:46,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-01-18 14:37:46,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182418083] [2022-01-18 14:37:46,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:37:46,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 14:37:46,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:37:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 14:37:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:37:46,974 INFO L87 Difference]: Start difference. First operand 164923 states and 608210 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:49,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:37:49,078 INFO L93 Difference]: Finished difference Result 166608 states and 613218 transitions. [2022-01-18 14:37:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 14:37:49,078 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:37:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:37:49,863 INFO L225 Difference]: With dead ends: 166608 [2022-01-18 14:37:49,864 INFO L226 Difference]: Without dead ends: 166578 [2022-01-18 14:37:49,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:37:49,864 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 160 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:37:49,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1388 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:37:50,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166578 states. [2022-01-18 14:37:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166578 to 165303. [2022-01-18 14:37:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165303 states, 165302 states have (on average 3.688188890636532) internal successors, (609665), 165302 states have internal predecessors, (609665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165303 states to 165303 states and 609665 transitions. [2022-01-18 14:37:55,806 INFO L78 Accepts]: Start accepts. Automaton has 165303 states and 609665 transitions. Word has length 33 [2022-01-18 14:37:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:37:55,806 INFO L470 AbstractCegarLoop]: Abstraction has 165303 states and 609665 transitions. [2022-01-18 14:37:55,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 165303 states and 609665 transitions. [2022-01-18 14:37:56,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:37:56,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:37:56,998 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:37:57,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-01-18 14:37:57,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:57,199 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:37:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:37:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash -9856276, now seen corresponding path program 133 times [2022-01-18 14:37:57,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:37:57,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724778310] [2022-01-18 14:37:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:37:57,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:37:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:37:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:57,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:37:57,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724778310] [2022-01-18 14:37:57,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724778310] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:37:57,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034757969] [2022-01-18 14:37:57,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:37:57,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:37:57,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:37:57,303 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:37:57,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-18 14:37:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:37:57,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:37:57,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:37:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:57,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:37:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:37:57,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034757969] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:37:57,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:37:57,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:37:57,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741825862] [2022-01-18 14:37:57,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:37:57,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:37:57,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:37:57,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:37:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:37:57,737 INFO L87 Difference]: Start difference. First operand 165303 states and 609665 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:37:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:37:59,547 INFO L93 Difference]: Finished difference Result 166379 states and 612669 transitions. [2022-01-18 14:37:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:37:59,552 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:37:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:38:00,347 INFO L225 Difference]: With dead ends: 166379 [2022-01-18 14:38:00,347 INFO L226 Difference]: Without dead ends: 166189 [2022-01-18 14:38:00,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:38:00,347 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 93 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:38:00,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 827 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:38:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166189 states. [2022-01-18 14:38:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166189 to 165726. [2022-01-18 14:38:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165726 states, 165725 states have (on average 3.686203047216775) internal successors, (610896), 165725 states have internal predecessors, (610896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165726 states to 165726 states and 610896 transitions. [2022-01-18 14:38:05,242 INFO L78 Accepts]: Start accepts. Automaton has 165726 states and 610896 transitions. Word has length 33 [2022-01-18 14:38:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:38:05,242 INFO L470 AbstractCegarLoop]: Abstraction has 165726 states and 610896 transitions. [2022-01-18 14:38:05,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 165726 states and 610896 transitions. [2022-01-18 14:38:05,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:38:05,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:38:05,615 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:38:05,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-01-18 14:38:05,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:38:05,816 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:38:05,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:38:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1846148980, now seen corresponding path program 134 times [2022-01-18 14:38:05,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:38:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243652085] [2022-01-18 14:38:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:38:05,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:38:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:38:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:05,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:38:05,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243652085] [2022-01-18 14:38:05,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243652085] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:38:05,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835521678] [2022-01-18 14:38:05,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:38:05,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:38:05,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:38:05,918 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:38:05,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-18 14:38:05,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:38:05,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:38:05,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:38:05,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:38:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:06,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:38:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:38:06,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835521678] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:38:06,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:38:06,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-01-18 14:38:06,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838333021] [2022-01-18 14:38:06,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:38:06,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 14:38:06,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:38:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 14:38:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:38:06,381 INFO L87 Difference]: Start difference. First operand 165726 states and 610896 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:38:08,363 INFO L93 Difference]: Finished difference Result 167899 states and 617688 transitions. [2022-01-18 14:38:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 14:38:08,363 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:38:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:38:09,579 INFO L225 Difference]: With dead ends: 167899 [2022-01-18 14:38:09,579 INFO L226 Difference]: Without dead ends: 167740 [2022-01-18 14:38:09,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-18 14:38:09,579 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 117 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 14:38:09,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1255 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 14:38:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167740 states. [2022-01-18 14:38:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167740 to 166679. [2022-01-18 14:38:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166679 states, 166678 states have (on average 3.685555382234008) internal successors, (614301), 166678 states have internal predecessors, (614301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:14,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166679 states to 166679 states and 614301 transitions. [2022-01-18 14:38:14,518 INFO L78 Accepts]: Start accepts. Automaton has 166679 states and 614301 transitions. Word has length 33 [2022-01-18 14:38:14,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:38:14,518 INFO L470 AbstractCegarLoop]: Abstraction has 166679 states and 614301 transitions. [2022-01-18 14:38:14,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 21 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 166679 states and 614301 transitions. [2022-01-18 14:38:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:38:14,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:38:14,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:38:14,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-01-18 14:38:15,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:38:15,114 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:38:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:38:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1905243292, now seen corresponding path program 135 times [2022-01-18 14:38:15,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:38:15,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719678246] [2022-01-18 14:38:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:38:15,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:38:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:38:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:38:15,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:38:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719678246] [2022-01-18 14:38:15,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719678246] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:38:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773985431] [2022-01-18 14:38:15,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:38:15,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:38:15,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:38:15,212 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:38:15,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-18 14:38:15,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 14:38:15,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:38:15,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:38:15,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:38:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:15,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:38:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:38:15,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773985431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:38:15,651 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:38:15,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:38:15,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115719259] [2022-01-18 14:38:15,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:38:15,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:38:15,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:38:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:38:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:38:15,652 INFO L87 Difference]: Start difference. First operand 166679 states and 614301 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:38:17,783 INFO L93 Difference]: Finished difference Result 169434 states and 622938 transitions. [2022-01-18 14:38:17,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:38:17,784 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:38:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:38:18,536 INFO L225 Difference]: With dead ends: 169434 [2022-01-18 14:38:18,536 INFO L226 Difference]: Without dead ends: 169305 [2022-01-18 14:38:18,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:38:18,536 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 130 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 14:38:18,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1548 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 14:38:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169305 states. [2022-01-18 14:38:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169305 to 167868. [2022-01-18 14:38:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167868 states, 167867 states have (on average 3.6859239755282456) internal successors, (618745), 167867 states have internal predecessors, (618745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167868 states to 167868 states and 618745 transitions. [2022-01-18 14:38:24,061 INFO L78 Accepts]: Start accepts. Automaton has 167868 states and 618745 transitions. Word has length 33 [2022-01-18 14:38:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:38:24,061 INFO L470 AbstractCegarLoop]: Abstraction has 167868 states and 618745 transitions. [2022-01-18 14:38:24,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 167868 states and 618745 transitions. [2022-01-18 14:38:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:38:24,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:38:24,460 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:38:24,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-01-18 14:38:24,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-01-18 14:38:24,660 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:38:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:38:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1233670632, now seen corresponding path program 136 times [2022-01-18 14:38:24,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:38:24,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068579589] [2022-01-18 14:38:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:38:24,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:38:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:38:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:38:24,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:38:24,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068579589] [2022-01-18 14:38:24,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068579589] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:38:24,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427148581] [2022-01-18 14:38:24,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:38:24,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:38:24,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:38:24,772 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:38:24,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-18 14:38:24,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:38:24,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:38:24,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:38:24,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:38:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:25,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:38:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:38:25,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427148581] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:38:25,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:38:25,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:38:25,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559018352] [2022-01-18 14:38:25,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:38:25,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:38:25,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:38:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:38:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:38:25,217 INFO L87 Difference]: Start difference. First operand 167868 states and 618745 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:38:27,323 INFO L93 Difference]: Finished difference Result 171902 states and 632025 transitions. [2022-01-18 14:38:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:38:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:38:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:38:28,120 INFO L225 Difference]: With dead ends: 171902 [2022-01-18 14:38:28,120 INFO L226 Difference]: Without dead ends: 171798 [2022-01-18 14:38:28,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:38:28,120 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 132 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:38:28,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1329 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:38:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171798 states. [2022-01-18 14:38:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171798 to 169504. [2022-01-18 14:38:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169504 states, 169503 states have (on average 3.6878226344076506) internal successors, (625097), 169503 states have internal predecessors, (625097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169504 states to 169504 states and 625097 transitions. [2022-01-18 14:38:33,802 INFO L78 Accepts]: Start accepts. Automaton has 169504 states and 625097 transitions. Word has length 33 [2022-01-18 14:38:33,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:38:33,802 INFO L470 AbstractCegarLoop]: Abstraction has 169504 states and 625097 transitions. [2022-01-18 14:38:33,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:33,802 INFO L276 IsEmpty]: Start isEmpty. Operand 169504 states and 625097 transitions. [2022-01-18 14:38:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:38:34,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:38:34,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:38:34,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-01-18 14:38:34,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-01-18 14:38:34,402 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:38:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:38:34,403 INFO L85 PathProgramCache]: Analyzing trace with hash 887894116, now seen corresponding path program 137 times [2022-01-18 14:38:34,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:38:34,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799218411] [2022-01-18 14:38:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:38:34,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:38:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:38:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:34,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:38:34,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799218411] [2022-01-18 14:38:34,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799218411] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:38:34,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568570124] [2022-01-18 14:38:34,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:38:34,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:38:34,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:38:34,485 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:38:34,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-18 14:38:34,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 14:38:34,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:38:34,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:38:34,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:38:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:34,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:38:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:35,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568570124] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:38:35,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:38:35,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:38:35,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079330682] [2022-01-18 14:38:35,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:38:35,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:38:35,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:38:35,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:38:35,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:38:35,009 INFO L87 Difference]: Start difference. First operand 169504 states and 625097 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:38:36,962 INFO L93 Difference]: Finished difference Result 169846 states and 625920 transitions. [2022-01-18 14:38:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:38:36,963 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:38:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:38:37,740 INFO L225 Difference]: With dead ends: 169846 [2022-01-18 14:38:37,740 INFO L226 Difference]: Without dead ends: 169672 [2022-01-18 14:38:37,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:38:37,741 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 73 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:38:37,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 756 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:38:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169672 states. [2022-01-18 14:38:41,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169672 to 169500. [2022-01-18 14:38:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169500 states, 169499 states have (on average 3.687178095445991) internal successors, (624973), 169499 states have internal predecessors, (624973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:43,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169500 states to 169500 states and 624973 transitions. [2022-01-18 14:38:43,357 INFO L78 Accepts]: Start accepts. Automaton has 169500 states and 624973 transitions. Word has length 33 [2022-01-18 14:38:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:38:43,357 INFO L470 AbstractCegarLoop]: Abstraction has 169500 states and 624973 transitions. [2022-01-18 14:38:43,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 169500 states and 624973 transitions. [2022-01-18 14:38:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:38:43,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:38:43,759 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:38:43,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-01-18 14:38:43,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-01-18 14:38:43,960 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:38:43,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:38:43,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1077520724, now seen corresponding path program 138 times [2022-01-18 14:38:43,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:38:43,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135466842] [2022-01-18 14:38:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:38:43,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:38:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:38:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:44,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:38:44,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135466842] [2022-01-18 14:38:44,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135466842] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:38:44,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053954929] [2022-01-18 14:38:44,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 14:38:44,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:38:44,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:38:44,048 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:38:44,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-18 14:38:44,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 14:38:44,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:38:44,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:38:44,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:38:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:44,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:38:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:44,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053954929] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:38:44,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:38:44,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:38:44,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959801621] [2022-01-18 14:38:44,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:38:44,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:38:44,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:38:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:38:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:38:44,474 INFO L87 Difference]: Start difference. First operand 169500 states and 624973 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:38:46,417 INFO L93 Difference]: Finished difference Result 170356 states and 627421 transitions. [2022-01-18 14:38:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:38:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:38:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:38:47,223 INFO L225 Difference]: With dead ends: 170356 [2022-01-18 14:38:47,223 INFO L226 Difference]: Without dead ends: 170214 [2022-01-18 14:38:47,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:38:47,224 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 74 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:38:47,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 938 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:38:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170214 states. [2022-01-18 14:38:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170214 to 169826. [2022-01-18 14:38:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169826 states, 169825 states have (on average 3.686076843809804) internal successors, (625988), 169825 states have internal predecessors, (625988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169826 states to 169826 states and 625988 transitions. [2022-01-18 14:38:53,787 INFO L78 Accepts]: Start accepts. Automaton has 169826 states and 625988 transitions. Word has length 33 [2022-01-18 14:38:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:38:53,787 INFO L470 AbstractCegarLoop]: Abstraction has 169826 states and 625988 transitions. [2022-01-18 14:38:53,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 169826 states and 625988 transitions. [2022-01-18 14:38:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:38:54,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:38:54,239 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:38:54,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-01-18 14:38:54,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-18 14:38:54,439 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:38:54,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:38:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash -610121868, now seen corresponding path program 139 times [2022-01-18 14:38:54,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:38:54,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683441077] [2022-01-18 14:38:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:38:54,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:38:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:38:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:54,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:38:54,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683441077] [2022-01-18 14:38:54,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683441077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:38:54,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579526469] [2022-01-18 14:38:54,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 14:38:54,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:38:54,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:38:54,530 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:38:54,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-18 14:38:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:38:54,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:38:54,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:38:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:38:54,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:38:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:38:54,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579526469] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:38:54,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:38:54,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:38:54,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533791043] [2022-01-18 14:38:54,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:38:54,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:38:54,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:38:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:38:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:38:54,949 INFO L87 Difference]: Start difference. First operand 169826 states and 625988 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:38:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:38:56,842 INFO L93 Difference]: Finished difference Result 170661 states and 628373 transitions. [2022-01-18 14:38:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:38:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:38:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:38:57,610 INFO L225 Difference]: With dead ends: 170661 [2022-01-18 14:38:57,610 INFO L226 Difference]: Without dead ends: 170595 [2022-01-18 14:38:57,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:38:57,610 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 102 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 14:38:57,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 817 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 14:38:57,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170595 states. [2022-01-18 14:39:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170595 to 170043. [2022-01-18 14:39:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170043 states, 170042 states have (on average 3.6861951753096296) internal successors, (626808), 170042 states have internal predecessors, (626808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170043 states to 170043 states and 626808 transitions. [2022-01-18 14:39:02,574 INFO L78 Accepts]: Start accepts. Automaton has 170043 states and 626808 transitions. Word has length 33 [2022-01-18 14:39:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:39:02,574 INFO L470 AbstractCegarLoop]: Abstraction has 170043 states and 626808 transitions. [2022-01-18 14:39:02,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 170043 states and 626808 transitions. [2022-01-18 14:39:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:39:03,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:39:03,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:39:03,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-01-18 14:39:03,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:39:03,986 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:39:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:39:03,986 INFO L85 PathProgramCache]: Analyzing trace with hash 255094828, now seen corresponding path program 140 times [2022-01-18 14:39:03,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:39:03,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310962167] [2022-01-18 14:39:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:39:03,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:39:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:39:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 14:39:04,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:39:04,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310962167] [2022-01-18 14:39:04,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310962167] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:39:04,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777043034] [2022-01-18 14:39:04,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 14:39:04,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:39:04,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:39:04,073 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:39:04,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-18 14:39:04,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 14:39:04,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:39:04,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:39:04,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:39:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:04,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:39:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 14:39:04,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777043034] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:39:04,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:39:04,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:39:04,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428123653] [2022-01-18 14:39:04,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:39:04,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:39:04,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:39:04,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:39:04,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:39:04,505 INFO L87 Difference]: Start difference. First operand 170043 states and 626808 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:39:06,510 INFO L93 Difference]: Finished difference Result 171169 states and 630233 transitions. [2022-01-18 14:39:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:39:06,510 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:39:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:39:07,323 INFO L225 Difference]: With dead ends: 171169 [2022-01-18 14:39:07,323 INFO L226 Difference]: Without dead ends: 171103 [2022-01-18 14:39:07,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:39:07,323 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 104 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 14:39:07,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1097 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 14:39:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171103 states. [2022-01-18 14:39:11,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171103 to 170517. [2022-01-18 14:39:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170517 states, 170516 states have (on average 3.6861995355274577) internal successors, (628556), 170516 states have internal predecessors, (628556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170517 states to 170517 states and 628556 transitions. [2022-01-18 14:39:12,406 INFO L78 Accepts]: Start accepts. Automaton has 170517 states and 628556 transitions. Word has length 33 [2022-01-18 14:39:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:39:12,406 INFO L470 AbstractCegarLoop]: Abstraction has 170517 states and 628556 transitions. [2022-01-18 14:39:12,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 170517 states and 628556 transitions. [2022-01-18 14:39:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:39:13,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:39:13,623 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:39:13,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-01-18 14:39:13,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2022-01-18 14:39:13,824 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:39:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:39:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1319917796, now seen corresponding path program 141 times [2022-01-18 14:39:13,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:39:13,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109925316] [2022-01-18 14:39:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:39:13,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:39:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:39:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:13,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:39:13,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109925316] [2022-01-18 14:39:13,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109925316] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:39:13,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457681371] [2022-01-18 14:39:13,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 14:39:13,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:39:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:39:13,907 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:39:13,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-18 14:39:13,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 14:39:13,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:39:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:39:13,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:39:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:14,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:39:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:14,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457681371] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:39:14,341 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:39:14,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:39:14,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816327409] [2022-01-18 14:39:14,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:39:14,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:39:14,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:39:14,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:39:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:39:14,342 INFO L87 Difference]: Start difference. First operand 170517 states and 628556 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:39:16,275 INFO L93 Difference]: Finished difference Result 171699 states and 632103 transitions. [2022-01-18 14:39:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:39:16,276 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:39:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:39:17,086 INFO L225 Difference]: With dead ends: 171699 [2022-01-18 14:39:17,086 INFO L226 Difference]: Without dead ends: 171587 [2022-01-18 14:39:17,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:39:17,086 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 126 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 14:39:17,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 1199 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 14:39:17,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171587 states. [2022-01-18 14:39:21,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171587 to 170839. [2022-01-18 14:39:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170839 states, 170838 states have (on average 3.6864866130486194) internal successors, (629792), 170838 states have internal predecessors, (629792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170839 states to 170839 states and 629792 transitions. [2022-01-18 14:39:22,255 INFO L78 Accepts]: Start accepts. Automaton has 170839 states and 629792 transitions. Word has length 33 [2022-01-18 14:39:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:39:22,256 INFO L470 AbstractCegarLoop]: Abstraction has 170839 states and 629792 transitions. [2022-01-18 14:39:22,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 170839 states and 629792 transitions. [2022-01-18 14:39:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:39:23,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:39:23,413 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:39:23,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-01-18 14:39:23,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:39:23,635 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:39:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:39:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1545810328, now seen corresponding path program 142 times [2022-01-18 14:39:23,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:39:23,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537036140] [2022-01-18 14:39:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:39:23,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:39:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:39:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:23,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:39:23,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537036140] [2022-01-18 14:39:23,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537036140] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:39:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465349660] [2022-01-18 14:39:23,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 14:39:23,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:39:23,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:39:23,727 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:39:23,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-18 14:39:23,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 14:39:23,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:39:23,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:39:23,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:39:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:24,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:39:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:24,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465349660] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:39:24,168 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:39:24,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 19 [2022-01-18 14:39:24,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011028109] [2022-01-18 14:39:24,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:39:24,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 14:39:24,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:39:24,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 14:39:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:39:24,168 INFO L87 Difference]: Start difference. First operand 170839 states and 629792 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:39:26,030 INFO L93 Difference]: Finished difference Result 172238 states and 634001 transitions. [2022-01-18 14:39:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 14:39:26,030 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:39:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:39:26,857 INFO L225 Difference]: With dead ends: 172238 [2022-01-18 14:39:26,857 INFO L226 Difference]: Without dead ends: 172154 [2022-01-18 14:39:26,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 14:39:26,857 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 126 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 14:39:26,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 989 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 14:39:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172154 states. [2022-01-18 14:39:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172154 to 171238. [2022-01-18 14:39:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171238 states, 171237 states have (on average 3.686936818561409) internal successors, (631340), 171237 states have internal predecessors, (631340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171238 states to 171238 states and 631340 transitions. [2022-01-18 14:39:31,993 INFO L78 Accepts]: Start accepts. Automaton has 171238 states and 631340 transitions. Word has length 33 [2022-01-18 14:39:31,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:39:31,993 INFO L470 AbstractCegarLoop]: Abstraction has 171238 states and 631340 transitions. [2022-01-18 14:39:31,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 171238 states and 631340 transitions. [2022-01-18 14:39:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:39:32,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:39:32,382 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:39:32,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-01-18 14:39:32,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:39:32,582 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:39:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:39:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1827369260, now seen corresponding path program 143 times [2022-01-18 14:39:32,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:39:32,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220203547] [2022-01-18 14:39:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:39:32,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:39:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 14:39:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:33,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 14:39:33,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220203547] [2022-01-18 14:39:33,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220203547] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 14:39:33,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651201715] [2022-01-18 14:39:33,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 14:39:33,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:39:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 14:39:33,452 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 14:39:33,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-18 14:39:33,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 14:39:33,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 14:39:33,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 14:39:33,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 14:39:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 14:39:33,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 14:39:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 14:39:33,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651201715] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 14:39:33,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 14:39:33,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 20 [2022-01-18 14:39:33,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55491107] [2022-01-18 14:39:33,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 14:39:33,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 14:39:33,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 14:39:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 14:39:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:39:33,932 INFO L87 Difference]: Start difference. First operand 171238 states and 631340 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 14:39:35,947 INFO L93 Difference]: Finished difference Result 174636 states and 642171 transitions. [2022-01-18 14:39:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 14:39:35,947 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 33 [2022-01-18 14:39:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 14:39:36,774 INFO L225 Difference]: With dead ends: 174636 [2022-01-18 14:39:36,774 INFO L226 Difference]: Without dead ends: 174606 [2022-01-18 14:39:36,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 14:39:36,775 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 140 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 14:39:36,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1599 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 14:39:36,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174606 states. [2022-01-18 14:39:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174606 to 172220. [2022-01-18 14:39:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172220 states, 172219 states have (on average 3.689012246035571) internal successors, (635318), 172219 states have internal predecessors, (635318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172220 states to 172220 states and 635318 transitions. [2022-01-18 14:39:41,976 INFO L78 Accepts]: Start accepts. Automaton has 172220 states and 635318 transitions. Word has length 33 [2022-01-18 14:39:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 14:39:41,977 INFO L470 AbstractCegarLoop]: Abstraction has 172220 states and 635318 transitions. [2022-01-18 14:39:41,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 14:39:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 172220 states and 635318 transitions. [2022-01-18 14:39:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 14:39:43,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 14:39:43,207 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 14:39:43,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-01-18 14:39:43,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 14:39:43,408 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 14:39:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 14:39:43,408 INFO L85 PathProgramCache]: Analyzing trace with hash -381184668, now seen corresponding path program 144 times [2022-01-18 14:39:43,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 14:39:43,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765238937] [2022-01-18 14:39:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 14:39:43,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 14:39:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-01-18 14:39:43,461 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-18 14:39:43,463 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 14:39:43,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-18 14:39:43,463 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 3,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 2ms.. [2022-01-18 14:39:43,464 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 14:39:43,465 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 14:39:43,465 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 14:39:43,468 INFO L732 BasicCegarLoop]: Path program histogram: [144, 4, 3, 1, 1, 1] [2022-01-18 14:39:43,473 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 14:39:43,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 14:39:43,476 INFO L202 PluginConnector]: Adding new model mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:39:43 BasicIcfg [2022-01-18 14:39:43,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 14:39:43,476 INFO L158 Benchmark]: Toolchain (without parser) took 656588.46ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 313.0MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2022-01-18 14:39:43,476 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 350.2MB. Free memory is still 314.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 14:39:43,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.22ms. Allocated memory is still 350.2MB. Free memory was 312.8MB in the beginning and 311.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 14:39:43,476 INFO L158 Benchmark]: Boogie Preprocessor took 13.65ms. Allocated memory is still 350.2MB. Free memory was 311.3MB in the beginning and 310.4MB in the end (delta: 953.8kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 14:39:43,476 INFO L158 Benchmark]: RCFGBuilder took 243.96ms. Allocated memory is still 350.2MB. Free memory was 310.4MB in the beginning and 300.9MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 14:39:43,476 INFO L158 Benchmark]: TraceAbstraction took 656305.11ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 300.3MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2022-01-18 14:39:43,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 350.2MB. Free memory is still 314.1MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 21.22ms. Allocated memory is still 350.2MB. Free memory was 312.8MB in the beginning and 311.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 13.65ms. Allocated memory is still 350.2MB. Free memory was 311.3MB in the beginning and 310.4MB in the end (delta: 953.8kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 243.96ms. Allocated memory is still 350.2MB. Free memory was 310.4MB in the beginning and 300.9MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 656305.11ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 300.3MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 3,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 2ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 3,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 2ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 3,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 2ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 3,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 39 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 656.2s, OverallIterations: 154, TraceHistogramMax: 3, PathProgramHistogramMax: 144, EmptinessCheckTime: 34.7s, AutomataDifference: 202.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22477 SdHoareTripleChecker+Valid, 37.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22477 mSDsluCounter, 76237 SdHoareTripleChecker+Invalid, 28.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95347 mSDsCounter, 3525 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76817 IncrementalHoareTripleChecker+Invalid, 80342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3525 mSolverCounterUnsat, 7301 mSDtfsCounter, 76817 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10365 GetRequests, 7009 SyntacticMatches, 307 SemanticMatches, 3049 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33485 ImplicationChecksByTransitivity, 26.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172220occurred in iteration=153, InterpolantAutomatonStates: 3046, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 331.3s AutomataMinimizationTime, 153 MinimizatonAttempts, 934217 StatesRemovedByMinimization, 153 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 52.5s InterpolantComputationTime, 8336 NumberOfCodeBlocks, 8320 NumberOfCodeBlocksAsserted, 553 NumberOfCheckSat, 11994 ConstructedInterpolants, 0 QuantifiedInterpolants, 141655 SizeOfPredicates, 605 NumberOfNonLiveVariables, 11448 ConjunctsInSsa, 2225 ConjunctsInUnsatCore, 443 InterpolantComputations, 9 PerfectInterpolantSequences, 1616/7000 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown