/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 04:12:18,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 04:12:18,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 04:12:18,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 04:12:18,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 04:12:18,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 04:12:18,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 04:12:18,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 04:12:18,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 04:12:18,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 04:12:18,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 04:12:18,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 04:12:18,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 04:12:18,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 04:12:18,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 04:12:18,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 04:12:18,237 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 04:12:18,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 04:12:18,237 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 04:12:18,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 04:12:18,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 04:12:18,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 04:12:18,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 04:12:18,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 04:12:18,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 04:12:18,238 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 04:12:18,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 04:12:18,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 04:12:18,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 04:12:18,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 04:12:18,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 04:12:18,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 04:12:18,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 04:12:18,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:12:18,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 04:12:18,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 04:12:18,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 04:12:18,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 04:12:18,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 04:12:18,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 04:12:18,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 04:12:18,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 04:12:18,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 04:12:18,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 04:12:18,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 04:12:18,473 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 04:12:18,475 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 04:12:18,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl [2022-01-18 04:12:18,476 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl' [2022-01-18 04:12:18,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 04:12:18,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 04:12:18,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 04:12:18,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 04:12:18,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 04:12:18,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,532 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 04:12:18,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 04:12:18,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 04:12:18,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 04:12:18,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 04:12:18,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 04:12:18,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 04:12:18,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 04:12:18,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 04:12:18,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/1) ... [2022-01-18 04:12:18,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:12:18,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:18,585 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 04:12:18,618 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 04:12:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 04:12:18,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 04:12:18,619 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 04:12:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 04:12:18,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 04:12:18,619 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 04:12:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 04:12:18,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 04:12:18,619 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 04:12:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 04:12:18,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 04:12:18,620 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 04:12:18,608 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 04:12:18,669 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 04:12:18,670 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 04:12:18,779 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 04:12:18,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 04:12:18,792 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 04:12:18,794 INFO L202 PluginConnector]: Adding new model mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:12:18 BoogieIcfgContainer [2022-01-18 04:12:18,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 04:12:18,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 04:12:18,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 04:12:18,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 04:12:18,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:12:18" (1/2) ... [2022-01-18 04:12:18,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69af6ce5 and model type mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 04:12:18, skipping insertion in model container [2022-01-18 04:12:18,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:12:18" (2/2) ... [2022-01-18 04:12:18,828 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.bpl [2022-01-18 04:12:18,832 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 04:12:18,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 04:12:18,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 04:12:18,832 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 04:12:18,860 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 04:12:18,901 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 04:12:18,907 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 04:12:18,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 04:12:18,917 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 76 flow [2022-01-18 04:12:18,969 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 04:12:18,972 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 04:12:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 04:12:18,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:18,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:18,980 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1698271758, now seen corresponding path program 1 times [2022-01-18 04:12:18,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:18,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811098146] [2022-01-18 04:12:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:18,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:19,187 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 04:12:19,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:19,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811098146] [2022-01-18 04:12:19,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811098146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:12:19,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:12:19,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 04:12:19,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462060455] [2022-01-18 04:12:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:19,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 04:12:19,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 04:12:19,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:12:19,237 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 04:12:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:19,313 INFO L93 Difference]: Finished difference Result 214 states and 614 transitions. [2022-01-18 04:12:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 04:12:19,316 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 04:12:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:19,327 INFO L225 Difference]: With dead ends: 214 [2022-01-18 04:12:19,329 INFO L226 Difference]: Without dead ends: 199 [2022-01-18 04:12:19,332 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 04:12:19,339 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 04:12:19,340 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 04:12:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-18 04:12:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 146. [2022-01-18 04:12:19,418 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 04:12:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 416 transitions. [2022-01-18 04:12:19,421 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 416 transitions. Word has length 15 [2022-01-18 04:12:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:19,422 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 416 transitions. [2022-01-18 04:12:19,422 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 04:12:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 416 transitions. [2022-01-18 04:12:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:19,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:19,424 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 04:12:19,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 04:12:19,425 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:19,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:19,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1717700848, now seen corresponding path program 1 times [2022-01-18 04:12:19,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:19,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562922770] [2022-01-18 04:12:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:19,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:19,501 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 04:12:19,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:19,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562922770] [2022-01-18 04:12:19,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562922770] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444038166] [2022-01-18 04:12:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:19,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:19,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:19,507 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 04:12:19,514 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 04:12:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:19,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:12:19,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:19,738 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 04:12:19,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:19,833 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 04:12:19,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444038166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:19,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:19,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-01-18 04:12:19,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182082880] [2022-01-18 04:12:19,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:19,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:12:19,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:12:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:12:19,842 INFO L87 Difference]: Start difference. First operand 146 states and 416 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 04:12:20,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:20,058 INFO L93 Difference]: Finished difference Result 347 states and 967 transitions. [2022-01-18 04:12:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:12:20,059 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 17 [2022-01-18 04:12:20,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:20,062 INFO L225 Difference]: With dead ends: 347 [2022-01-18 04:12:20,062 INFO L226 Difference]: Without dead ends: 347 [2022-01-18 04:12:20,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:12:20,064 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 72 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:20,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 51 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:20,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-18 04:12:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 173. [2022-01-18 04:12:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 3.0) internal successors, (516), 172 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 516 transitions. [2022-01-18 04:12:20,080 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 516 transitions. Word has length 17 [2022-01-18 04:12:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:20,081 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 516 transitions. [2022-01-18 04:12:20,081 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 04:12:20,081 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 516 transitions. [2022-01-18 04:12:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:20,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:20,083 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 04:12:20,106 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 04:12:20,299 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 04:12:20,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:20,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1520327342, now seen corresponding path program 1 times [2022-01-18 04:12:20,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:20,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376182152] [2022-01-18 04:12:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:20,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:20,371 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 04:12:20,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:20,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376182152] [2022-01-18 04:12:20,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376182152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:12:20,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:12:20,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:12:20,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352175682] [2022-01-18 04:12:20,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:20,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:12:20,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:12:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:12:20,378 INFO L87 Difference]: Start difference. First operand 173 states and 516 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 04:12:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:20,477 INFO L93 Difference]: Finished difference Result 380 states and 1050 transitions. [2022-01-18 04:12:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:12:20,477 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 04:12:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:20,480 INFO L225 Difference]: With dead ends: 380 [2022-01-18 04:12:20,480 INFO L226 Difference]: Without dead ends: 380 [2022-01-18 04:12:20,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:12:20,481 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 65 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:20,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 36 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-01-18 04:12:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 156. [2022-01-18 04:12:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.935483870967742) internal successors, (455), 155 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 455 transitions. [2022-01-18 04:12:20,493 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 455 transitions. Word has length 17 [2022-01-18 04:12:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:20,494 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 455 transitions. [2022-01-18 04:12:20,494 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 04:12:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 455 transitions. [2022-01-18 04:12:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:20,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:20,496 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 04:12:20,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 04:12:20,496 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:20,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash 388922220, now seen corresponding path program 1 times [2022-01-18 04:12:20,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:20,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002957428] [2022-01-18 04:12:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:20,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:20,538 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 04:12:20,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:20,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002957428] [2022-01-18 04:12:20,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002957428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:12:20,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:12:20,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:12:20,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963149677] [2022-01-18 04:12:20,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:20,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:12:20,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:12:20,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:12:20,540 INFO L87 Difference]: Start difference. First operand 156 states and 455 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 04:12:20,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:20,679 INFO L93 Difference]: Finished difference Result 303 states and 809 transitions. [2022-01-18 04:12:20,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:12:20,679 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 04:12:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:20,691 INFO L225 Difference]: With dead ends: 303 [2022-01-18 04:12:20,691 INFO L226 Difference]: Without dead ends: 292 [2022-01-18 04:12:20,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:12:20,692 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 70 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:20,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 28 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-18 04:12:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 177. [2022-01-18 04:12:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.8806818181818183) internal successors, (507), 176 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 507 transitions. [2022-01-18 04:12:20,702 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 507 transitions. Word has length 17 [2022-01-18 04:12:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:20,702 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 507 transitions. [2022-01-18 04:12:20,703 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 04:12:20,703 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 507 transitions. [2022-01-18 04:12:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:20,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:20,704 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 04:12:20,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 04:12:20,705 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:20,705 INFO L85 PathProgramCache]: Analyzing trace with hash 336278568, now seen corresponding path program 2 times [2022-01-18 04:12:20,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:20,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66287556] [2022-01-18 04:12:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:20,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:20,753 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 04:12:20,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:20,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66287556] [2022-01-18 04:12:20,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66287556] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:20,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189513633] [2022-01-18 04:12:20,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:12:20,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:20,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:20,755 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 04:12:20,789 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 04:12:20,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:20,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:20,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:20,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:20,974 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 04:12:20,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:21,023 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 04:12:21,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189513633] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:21,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:21,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-01-18 04:12:21,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333698858] [2022-01-18 04:12:21,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:21,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:12:21,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:21,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:12:21,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:12:21,025 INFO L87 Difference]: Start difference. First operand 177 states and 507 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 04:12:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:21,418 INFO L93 Difference]: Finished difference Result 443 states and 1220 transitions. [2022-01-18 04:12:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 04:12:21,418 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 17 [2022-01-18 04:12:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:21,421 INFO L225 Difference]: With dead ends: 443 [2022-01-18 04:12:21,421 INFO L226 Difference]: Without dead ends: 443 [2022-01-18 04:12:21,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:12:21,422 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 159 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:21,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 105 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:21,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-01-18 04:12:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 187. [2022-01-18 04:12:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.935483870967742) internal successors, (546), 186 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 546 transitions. [2022-01-18 04:12:21,432 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 546 transitions. Word has length 17 [2022-01-18 04:12:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:21,433 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 546 transitions. [2022-01-18 04:12:21,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 04:12:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 546 transitions. [2022-01-18 04:12:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:21,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:21,434 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 04:12:21,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 04:12:21,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:21,656 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1075389144, now seen corresponding path program 2 times [2022-01-18 04:12:21,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:21,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132023557] [2022-01-18 04:12:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:21,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:21,696 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 04:12:21,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:21,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132023557] [2022-01-18 04:12:21,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132023557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:12:21,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:12:21,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 04:12:21,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963169336] [2022-01-18 04:12:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:21,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:12:21,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:12:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:12:21,697 INFO L87 Difference]: Start difference. First operand 187 states and 546 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 04:12:21,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:21,753 INFO L93 Difference]: Finished difference Result 287 states and 800 transitions. [2022-01-18 04:12:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:12:21,753 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 04:12:21,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:21,755 INFO L225 Difference]: With dead ends: 287 [2022-01-18 04:12:21,755 INFO L226 Difference]: Without dead ends: 283 [2022-01-18 04:12:21,755 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 04:12:21,756 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:21,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 18 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:12:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-18 04:12:21,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 193. [2022-01-18 04:12:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.890625) internal successors, (555), 192 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 555 transitions. [2022-01-18 04:12:21,764 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 555 transitions. Word has length 17 [2022-01-18 04:12:21,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:21,764 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 555 transitions. [2022-01-18 04:12:21,764 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 04:12:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 555 transitions. [2022-01-18 04:12:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:21,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:21,765 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 04:12:21,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 04:12:21,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:21,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1208261484, now seen corresponding path program 3 times [2022-01-18 04:12:21,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:21,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500878619] [2022-01-18 04:12:21,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:21,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:21,804 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 04:12:21,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:21,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500878619] [2022-01-18 04:12:21,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500878619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:12:21,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:12:21,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:12:21,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036197190] [2022-01-18 04:12:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:21,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:12:21,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:21,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:12:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:12:21,807 INFO L87 Difference]: Start difference. First operand 193 states and 555 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 04:12:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:21,892 INFO L93 Difference]: Finished difference Result 255 states and 706 transitions. [2022-01-18 04:12:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:12:21,893 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 04:12:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:21,894 INFO L225 Difference]: With dead ends: 255 [2022-01-18 04:12:21,895 INFO L226 Difference]: Without dead ends: 244 [2022-01-18 04:12:21,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:12:21,897 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:21,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 26 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:21,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-18 04:12:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 196. [2022-01-18 04:12:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.876923076923077) internal successors, (561), 195 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 561 transitions. [2022-01-18 04:12:21,905 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 561 transitions. Word has length 17 [2022-01-18 04:12:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:21,906 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 561 transitions. [2022-01-18 04:12:21,906 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 04:12:21,907 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 561 transitions. [2022-01-18 04:12:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:21,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:21,908 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 04:12:21,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 04:12:21,908 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash 830951980, now seen corresponding path program 4 times [2022-01-18 04:12:21,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:21,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977832475] [2022-01-18 04:12:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:21,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:21,968 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 04:12:21,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:21,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977832475] [2022-01-18 04:12:21,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977832475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:12:21,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:12:21,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:12:21,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026457648] [2022-01-18 04:12:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:21,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:12:21,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:12:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:12:21,970 INFO L87 Difference]: Start difference. First operand 196 states and 561 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 04:12:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:22,052 INFO L93 Difference]: Finished difference Result 247 states and 705 transitions. [2022-01-18 04:12:22,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:12:22,054 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 04:12:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:22,056 INFO L225 Difference]: With dead ends: 247 [2022-01-18 04:12:22,056 INFO L226 Difference]: Without dead ends: 247 [2022-01-18 04:12:22,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:12:22,057 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:22,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 31 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-01-18 04:12:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 199. [2022-01-18 04:12:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.8737373737373737) internal successors, (569), 198 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 569 transitions. [2022-01-18 04:12:22,065 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 569 transitions. Word has length 17 [2022-01-18 04:12:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:22,065 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 569 transitions. [2022-01-18 04:12:22,065 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 04:12:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 569 transitions. [2022-01-18 04:12:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:22,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:22,066 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 04:12:22,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 04:12:22,066 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:22,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:22,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1765137624, now seen corresponding path program 5 times [2022-01-18 04:12:22,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:22,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179347679] [2022-01-18 04:12:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:22,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:22,109 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 04:12:22,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179347679] [2022-01-18 04:12:22,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179347679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:12:22,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:12:22,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 04:12:22,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498944720] [2022-01-18 04:12:22,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:22,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:12:22,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:12:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:12:22,111 INFO L87 Difference]: Start difference. First operand 199 states and 569 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 04:12:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:22,201 INFO L93 Difference]: Finished difference Result 259 states and 737 transitions. [2022-01-18 04:12:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:12:22,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 04:12:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:22,203 INFO L225 Difference]: With dead ends: 259 [2022-01-18 04:12:22,203 INFO L226 Difference]: Without dead ends: 259 [2022-01-18 04:12:22,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:12:22,204 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 52 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:22,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 38 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-01-18 04:12:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 202. [2022-01-18 04:12:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.8855721393034828) internal successors, (580), 201 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 580 transitions. [2022-01-18 04:12:22,211 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 580 transitions. Word has length 17 [2022-01-18 04:12:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:22,212 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 580 transitions. [2022-01-18 04:12:22,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 04:12:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 580 transitions. [2022-01-18 04:12:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:22,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:22,213 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 04:12:22,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 04:12:22,213 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:22,213 INFO L85 PathProgramCache]: Analyzing trace with hash -861155856, now seen corresponding path program 2 times [2022-01-18 04:12:22,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:22,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897820320] [2022-01-18 04:12:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:22,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:22,235 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 04:12:22,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:22,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897820320] [2022-01-18 04:12:22,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897820320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:12:22,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:12:22,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 04:12:22,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291789992] [2022-01-18 04:12:22,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:22,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:12:22,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:22,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:12:22,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:12:22,237 INFO L87 Difference]: Start difference. First operand 202 states and 580 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 04:12:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:22,281 INFO L93 Difference]: Finished difference Result 263 states and 750 transitions. [2022-01-18 04:12:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:12:22,281 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 04:12:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:22,283 INFO L225 Difference]: With dead ends: 263 [2022-01-18 04:12:22,283 INFO L226 Difference]: Without dead ends: 255 [2022-01-18 04:12:22,283 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 04:12:22,284 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:22,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 16 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:12:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-01-18 04:12:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 192. [2022-01-18 04:12:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.884816753926702) internal successors, (551), 191 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:22,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 551 transitions. [2022-01-18 04:12:22,291 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 551 transitions. Word has length 17 [2022-01-18 04:12:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:22,291 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 551 transitions. [2022-01-18 04:12:22,291 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 04:12:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 551 transitions. [2022-01-18 04:12:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:22,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:22,292 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 04:12:22,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 04:12:22,293 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1480901912, now seen corresponding path program 6 times [2022-01-18 04:12:22,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:22,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381675699] [2022-01-18 04:12:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:22,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:22,348 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 04:12:22,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:22,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381675699] [2022-01-18 04:12:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381675699] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:22,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770578753] [2022-01-18 04:12:22,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:12:22,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:22,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:22,350 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 04:12:22,381 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 04:12:22,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 04:12:22,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:22,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:22,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:22,501 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 04:12:22,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:22,552 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 04:12:22,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770578753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:22,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:22,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-01-18 04:12:22,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954630670] [2022-01-18 04:12:22,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:22,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:12:22,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:22,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:12:22,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:12:22,553 INFO L87 Difference]: Start difference. First operand 192 states and 551 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 04:12:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:22,749 INFO L93 Difference]: Finished difference Result 379 states and 1074 transitions. [2022-01-18 04:12:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:12:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 17 [2022-01-18 04:12:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:22,751 INFO L225 Difference]: With dead ends: 379 [2022-01-18 04:12:22,752 INFO L226 Difference]: Without dead ends: 379 [2022-01-18 04:12:22,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:12:22,752 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 135 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:22,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 65 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-01-18 04:12:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 186. [2022-01-18 04:12:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.854054054054054) internal successors, (528), 185 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 528 transitions. [2022-01-18 04:12:22,759 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 528 transitions. Word has length 17 [2022-01-18 04:12:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:22,759 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 528 transitions. [2022-01-18 04:12:22,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 04:12:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 528 transitions. [2022-01-18 04:12:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 04:12:22,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:22,760 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 04:12:22,782 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 04:12:22,975 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 04:12:22,976 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -444220188, now seen corresponding path program 7 times [2022-01-18 04:12:22,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:22,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367156701] [2022-01-18 04:12:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:22,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:23,021 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 04:12:23,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367156701] [2022-01-18 04:12:23,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367156701] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577313080] [2022-01-18 04:12:23,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:12:23,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:23,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:23,023 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 04:12:23,032 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 04:12:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:23,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:23,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:23,182 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 04:12:23,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:23,252 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 04:12:23,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577313080] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:23,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:23,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-01-18 04:12:23,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562836543] [2022-01-18 04:12:23,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:23,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:12:23,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:12:23,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:12:23,254 INFO L87 Difference]: Start difference. First operand 186 states and 528 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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 04:12:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:23,532 INFO L93 Difference]: Finished difference Result 324 states and 942 transitions. [2022-01-18 04:12:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 04:12:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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 17 [2022-01-18 04:12:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:23,534 INFO L225 Difference]: With dead ends: 324 [2022-01-18 04:12:23,534 INFO L226 Difference]: Without dead ends: 324 [2022-01-18 04:12:23,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:12:23,535 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 103 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:23,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 78 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-01-18 04:12:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 168. [2022-01-18 04:12:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.8862275449101795) internal successors, (482), 167 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 482 transitions. [2022-01-18 04:12:23,541 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 482 transitions. Word has length 17 [2022-01-18 04:12:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:23,541 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 482 transitions. [2022-01-18 04:12:23,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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 04:12:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 482 transitions. [2022-01-18 04:12:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 04:12:23,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:23,542 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 04:12:23,568 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 04:12:23,762 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 04:12:23,762 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:23,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1880408526, now seen corresponding path program 1 times [2022-01-18 04:12:23,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:23,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552793028] [2022-01-18 04:12:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:23,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:23,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:23,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552793028] [2022-01-18 04:12:23,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552793028] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:23,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930004740] [2022-01-18 04:12:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:23,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:23,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:23,824 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 04:12:23,849 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 04:12:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:23,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:12:23,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:23,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:24,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930004740] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:24,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:24,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2022-01-18 04:12:24,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916702429] [2022-01-18 04:12:24,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:24,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:12:24,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:24,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:12:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:12:24,076 INFO L87 Difference]: Start difference. First operand 168 states and 482 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:24,137 INFO L93 Difference]: Finished difference Result 554 states and 1610 transitions. [2022-01-18 04:12:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:12:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 04:12:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:24,141 INFO L225 Difference]: With dead ends: 554 [2022-01-18 04:12:24,141 INFO L226 Difference]: Without dead ends: 524 [2022-01-18 04:12:24,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:12:24,142 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 44 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:24,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 110 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-18 04:12:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 301. [2022-01-18 04:12:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 3.06) internal successors, (918), 300 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 918 transitions. [2022-01-18 04:12:24,155 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 918 transitions. Word has length 19 [2022-01-18 04:12:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:24,155 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 918 transitions. [2022-01-18 04:12:24,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 918 transitions. [2022-01-18 04:12:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 04:12:24,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:24,156 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 04:12:24,179 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 04:12:24,379 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 04:12:24,380 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 280106304, now seen corresponding path program 2 times [2022-01-18 04:12:24,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:24,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227996548] [2022-01-18 04:12:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:24,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:24,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:24,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227996548] [2022-01-18 04:12:24,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227996548] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:24,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513283534] [2022-01-18 04:12:24,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:12:24,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:24,457 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 04:12:24,491 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 04:12:24,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:24,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:24,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:12:24,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:24,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:12:24,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513283534] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:24,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 04:12:24,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 8 [2022-01-18 04:12:24,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231826742] [2022-01-18 04:12:24,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:12:24,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:12:24,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:12:24,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:12:24,722 INFO L87 Difference]: Start difference. First operand 301 states and 918 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:24,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:24,754 INFO L93 Difference]: Finished difference Result 505 states and 1514 transitions. [2022-01-18 04:12:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:12:24,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 04:12:24,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:24,758 INFO L225 Difference]: With dead ends: 505 [2022-01-18 04:12:24,758 INFO L226 Difference]: Without dead ends: 490 [2022-01-18 04:12:24,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:12:24,758 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:24,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:12:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-01-18 04:12:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 415. [2022-01-18 04:12:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 3.152173913043478) internal successors, (1305), 414 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1305 transitions. [2022-01-18 04:12:24,770 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1305 transitions. Word has length 19 [2022-01-18 04:12:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:24,771 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 1305 transitions. [2022-01-18 04:12:24,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1305 transitions. [2022-01-18 04:12:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:24,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:24,772 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:24,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:24,987 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 04:12:24,988 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:24,988 INFO L85 PathProgramCache]: Analyzing trace with hash 679671728, now seen corresponding path program 3 times [2022-01-18 04:12:24,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:24,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612976400] [2022-01-18 04:12:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:24,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:25,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612976400] [2022-01-18 04:12:25,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612976400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556934038] [2022-01-18 04:12:25,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:12:25,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:25,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:25,032 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 04:12:25,033 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 04:12:25,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:12:25,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:25,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:25,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:25,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:25,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556934038] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:25,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:25,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 04:12:25,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3655556] [2022-01-18 04:12:25,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:25,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:12:25,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:12:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:12:25,225 INFO L87 Difference]: Start difference. First operand 415 states and 1305 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 04:12:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:25,473 INFO L93 Difference]: Finished difference Result 1184 states and 3469 transitions. [2022-01-18 04:12:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 04:12:25,474 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 21 [2022-01-18 04:12:25,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:25,479 INFO L225 Difference]: With dead ends: 1184 [2022-01-18 04:12:25,479 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 04:12:25,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:12:25,480 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 165 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:25,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 104 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 04:12:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 547. [2022-01-18 04:12:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 3.2747252747252746) internal successors, (1788), 546 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1788 transitions. [2022-01-18 04:12:25,501 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1788 transitions. Word has length 21 [2022-01-18 04:12:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:25,501 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1788 transitions. [2022-01-18 04:12:25,502 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 04:12:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1788 transitions. [2022-01-18 04:12:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:25,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:25,503 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 04:12:25,526 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 04:12:25,725 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 04:12:25,726 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1166690382, now seen corresponding path program 1 times [2022-01-18 04:12:25,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628909670] [2022-01-18 04:12:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:25,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:25,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:25,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628909670] [2022-01-18 04:12:25,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628909670] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:25,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947724688] [2022-01-18 04:12:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:25,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:25,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:25,783 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 04:12:25,784 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 04:12:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:25,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:12:25,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:25,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:26,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947724688] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:26,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:26,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-01-18 04:12:26,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233057104] [2022-01-18 04:12:26,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:26,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:12:26,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:12:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:12:26,019 INFO L87 Difference]: Start difference. First operand 547 states and 1788 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:26,461 INFO L93 Difference]: Finished difference Result 1383 states and 4228 transitions. [2022-01-18 04:12:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 04:12:26,461 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:26,468 INFO L225 Difference]: With dead ends: 1383 [2022-01-18 04:12:26,468 INFO L226 Difference]: Without dead ends: 1383 [2022-01-18 04:12:26,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2022-01-18 04:12:26,469 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 143 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:26,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 103 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:26,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-01-18 04:12:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 672. [2022-01-18 04:12:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 3.2801788375558867) internal successors, (2201), 671 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 2201 transitions. [2022-01-18 04:12:26,493 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 2201 transitions. Word has length 21 [2022-01-18 04:12:26,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:26,493 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 2201 transitions. [2022-01-18 04:12:26,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 2201 transitions. [2022-01-18 04:12:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:26,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:26,495 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:26,520 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 04:12:26,717 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 04:12:26,718 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:26,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash -671302868, now seen corresponding path program 4 times [2022-01-18 04:12:26,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:26,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635928469] [2022-01-18 04:12:26,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:26,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:26,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:26,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635928469] [2022-01-18 04:12:26,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635928469] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:26,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665595473] [2022-01-18 04:12:26,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:12:26,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:26,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:26,768 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 04:12:26,769 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 04:12:26,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:12:26,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:26,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:26,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:26,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:27,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665595473] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:27,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:27,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 04:12:27,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356747827] [2022-01-18 04:12:27,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:27,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:27,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:27,044 INFO L87 Difference]: Start difference. First operand 672 states and 2201 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:27,795 INFO L93 Difference]: Finished difference Result 1750 states and 5112 transitions. [2022-01-18 04:12:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 04:12:27,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:12:27,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:27,808 INFO L225 Difference]: With dead ends: 1750 [2022-01-18 04:12:27,808 INFO L226 Difference]: Without dead ends: 1700 [2022-01-18 04:12:27,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=1285, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 04:12:27,810 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 360 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:27,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 158 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2022-01-18 04:12:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 740. [2022-01-18 04:12:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 3.277401894451962) internal successors, (2422), 739 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2422 transitions. [2022-01-18 04:12:27,843 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2422 transitions. Word has length 21 [2022-01-18 04:12:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:27,844 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 2422 transitions. [2022-01-18 04:12:27,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2422 transitions. [2022-01-18 04:12:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:27,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:27,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:27,875 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 04:12:28,059 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 04:12:28,059 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1344672536, now seen corresponding path program 5 times [2022-01-18 04:12:28,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:28,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150602035] [2022-01-18 04:12:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:28,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:28,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:28,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150602035] [2022-01-18 04:12:28,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150602035] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:28,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221366405] [2022-01-18 04:12:28,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:12:28,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:28,109 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 04:12:28,116 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 04:12:28,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:12:28,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:28,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:28,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:28,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:28,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:28,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221366405] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:28,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:28,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 04:12:28,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996215911] [2022-01-18 04:12:28,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:28,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:28,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:28,356 INFO L87 Difference]: Start difference. First operand 740 states and 2422 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 04:12:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:29,578 INFO L93 Difference]: Finished difference Result 2297 states and 6631 transitions. [2022-01-18 04:12:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 04:12:29,578 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 21 [2022-01-18 04:12:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:29,589 INFO L225 Difference]: With dead ends: 2297 [2022-01-18 04:12:29,589 INFO L226 Difference]: Without dead ends: 2297 [2022-01-18 04:12:29,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1009, Invalid=3023, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 04:12:29,591 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 374 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:29,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 208 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:12:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-01-18 04:12:29,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 756. [2022-01-18 04:12:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 3.282119205298013) internal successors, (2478), 755 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 2478 transitions. [2022-01-18 04:12:29,628 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 2478 transitions. Word has length 21 [2022-01-18 04:12:29,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:29,628 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 2478 transitions. [2022-01-18 04:12:29,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 04:12:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 2478 transitions. [2022-01-18 04:12:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:29,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:29,632 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 04:12:29,656 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 04:12:29,847 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 04:12:29,847 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:29,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1538627048, now seen corresponding path program 2 times [2022-01-18 04:12:29,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:29,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236745377] [2022-01-18 04:12:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:29,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:29,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:29,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236745377] [2022-01-18 04:12:29,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236745377] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:29,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126110645] [2022-01-18 04:12:29,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:12:29,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:29,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:29,896 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 04:12:29,907 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 04:12:29,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:29,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:29,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:12:29,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:30,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:30,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126110645] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:30,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:30,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-01-18 04:12:30,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411226434] [2022-01-18 04:12:30,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:30,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:12:30,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:30,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:12:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:12:30,115 INFO L87 Difference]: Start difference. First operand 756 states and 2478 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:30,764 INFO L93 Difference]: Finished difference Result 3028 states and 9113 transitions. [2022-01-18 04:12:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 04:12:30,764 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:12:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:30,780 INFO L225 Difference]: With dead ends: 3028 [2022-01-18 04:12:30,780 INFO L226 Difference]: Without dead ends: 3012 [2022-01-18 04:12:30,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 04:12:30,781 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 317 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:30,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 157 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:30,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-01-18 04:12:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 999. [2022-01-18 04:12:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 3.3887775551102206) internal successors, (3382), 998 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 3382 transitions. [2022-01-18 04:12:30,827 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 3382 transitions. Word has length 21 [2022-01-18 04:12:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:30,828 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 3382 transitions. [2022-01-18 04:12:30,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 3382 transitions. [2022-01-18 04:12:30,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:30,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:30,830 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 04:12:30,855 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 04:12:31,055 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 04:12:31,055 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1777782804, now seen corresponding path program 3 times [2022-01-18 04:12:31,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:31,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5784678] [2022-01-18 04:12:31,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:31,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:31,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:31,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5784678] [2022-01-18 04:12:31,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5784678] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:31,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279113555] [2022-01-18 04:12:31,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:12:31,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:31,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:31,113 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 04:12:31,114 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 04:12:31,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 04:12:31,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:31,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:12:31,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:31,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:31,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279113555] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:31,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:31,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-01-18 04:12:31,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655727343] [2022-01-18 04:12:31,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:31,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:12:31,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:31,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:12:31,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:12:31,340 INFO L87 Difference]: Start difference. First operand 999 states and 3382 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:31,997 INFO L93 Difference]: Finished difference Result 3180 states and 9617 transitions. [2022-01-18 04:12:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 04:12:31,997 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:32,011 INFO L225 Difference]: With dead ends: 3180 [2022-01-18 04:12:32,012 INFO L226 Difference]: Without dead ends: 3166 [2022-01-18 04:12:32,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=382, Invalid=1024, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 04:12:32,013 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 280 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:32,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 221 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2022-01-18 04:12:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 991. [2022-01-18 04:12:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 3.382828282828283) internal successors, (3349), 990 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 3349 transitions. [2022-01-18 04:12:32,069 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 3349 transitions. Word has length 21 [2022-01-18 04:12:32,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:32,069 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 3349 transitions. [2022-01-18 04:12:32,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 3349 transitions. [2022-01-18 04:12:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:32,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:32,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:32,097 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 04:12:32,294 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 04:12:32,295 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1471548184, now seen corresponding path program 6 times [2022-01-18 04:12:32,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:32,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866226715] [2022-01-18 04:12:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:32,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:32,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:32,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866226715] [2022-01-18 04:12:32,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866226715] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:32,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735956113] [2022-01-18 04:12:32,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:12:32,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:32,341 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 04:12:32,366 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 04:12:32,375 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:12:32,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:32,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:32,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:32,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:32,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735956113] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:32,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:32,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 04:12:32,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210002405] [2022-01-18 04:12:32,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:32,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:32,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:32,593 INFO L87 Difference]: Start difference. First operand 991 states and 3349 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:33,301 INFO L93 Difference]: Finished difference Result 2213 states and 6556 transitions. [2022-01-18 04:12:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 04:12:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:12:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:33,308 INFO L225 Difference]: With dead ends: 2213 [2022-01-18 04:12:33,308 INFO L226 Difference]: Without dead ends: 2185 [2022-01-18 04:12:33,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=512, Invalid=1468, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 04:12:33,310 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 312 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:33,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 179 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2022-01-18 04:12:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 983. [2022-01-18 04:12:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 982 states have (on average 3.3716904276985744) internal successors, (3311), 982 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:33,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 3311 transitions. [2022-01-18 04:12:33,342 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 3311 transitions. Word has length 21 [2022-01-18 04:12:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:33,342 INFO L470 AbstractCegarLoop]: Abstraction has 983 states and 3311 transitions. [2022-01-18 04:12:33,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:33,343 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 3311 transitions. [2022-01-18 04:12:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:33,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:33,346 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:33,369 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 04:12:33,569 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 04:12:33,569 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:33,570 INFO L85 PathProgramCache]: Analyzing trace with hash 734714668, now seen corresponding path program 7 times [2022-01-18 04:12:33,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:33,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285476063] [2022-01-18 04:12:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:33,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:33,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:33,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285476063] [2022-01-18 04:12:33,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285476063] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:33,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705853228] [2022-01-18 04:12:33,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:12:33,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:33,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:33,612 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 04:12:33,631 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 04:12:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:33,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:33,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:33,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:33,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705853228] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:33,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:33,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 04:12:33,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183050383] [2022-01-18 04:12:33,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:33,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:33,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:33,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:33,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:33,863 INFO L87 Difference]: Start difference. First operand 983 states and 3311 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:34,559 INFO L93 Difference]: Finished difference Result 2176 states and 6530 transitions. [2022-01-18 04:12:34,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 04:12:34,560 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:12:34,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:34,564 INFO L225 Difference]: With dead ends: 2176 [2022-01-18 04:12:34,564 INFO L226 Difference]: Without dead ends: 2126 [2022-01-18 04:12:34,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=1285, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 04:12:34,565 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 339 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:34,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 154 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2022-01-18 04:12:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1046. [2022-01-18 04:12:34,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 3.384688995215311) internal successors, (3537), 1045 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 3537 transitions. [2022-01-18 04:12:34,596 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 3537 transitions. Word has length 21 [2022-01-18 04:12:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:34,597 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 3537 transitions. [2022-01-18 04:12:34,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:34,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 3537 transitions. [2022-01-18 04:12:34,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:34,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:34,599 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:34,617 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 04:12:34,805 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 04:12:34,805 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:34,806 INFO L85 PathProgramCache]: Analyzing trace with hash -548576280, now seen corresponding path program 8 times [2022-01-18 04:12:34,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:34,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642367774] [2022-01-18 04:12:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:34,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:34,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:34,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642367774] [2022-01-18 04:12:34,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642367774] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:34,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031718235] [2022-01-18 04:12:34,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:12:34,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:34,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:34,845 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 04:12:34,870 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 04:12:34,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:34,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:34,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:34,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:35,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:35,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031718235] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:35,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:35,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 04:12:35,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856106147] [2022-01-18 04:12:35,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:35,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:35,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:35,086 INFO L87 Difference]: Start difference. First operand 1046 states and 3537 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:35,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:35,869 INFO L93 Difference]: Finished difference Result 2322 states and 6923 transitions. [2022-01-18 04:12:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 04:12:35,869 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:12:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:35,874 INFO L225 Difference]: With dead ends: 2322 [2022-01-18 04:12:35,874 INFO L226 Difference]: Without dead ends: 2287 [2022-01-18 04:12:35,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=556, Invalid=1606, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 04:12:35,875 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 347 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:35,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 164 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2022-01-18 04:12:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1088. [2022-01-18 04:12:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 3.3679852805887767) internal successors, (3661), 1087 states have internal predecessors, (3661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 3661 transitions. [2022-01-18 04:12:35,909 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 3661 transitions. Word has length 21 [2022-01-18 04:12:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:35,909 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 3661 transitions. [2022-01-18 04:12:35,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:35,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 3661 transitions. [2022-01-18 04:12:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:35,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:35,912 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:35,937 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 04:12:36,127 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 04:12:36,128 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:36,128 INFO L85 PathProgramCache]: Analyzing trace with hash 556018412, now seen corresponding path program 9 times [2022-01-18 04:12:36,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372974660] [2022-01-18 04:12:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:36,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:36,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372974660] [2022-01-18 04:12:36,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372974660] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145712077] [2022-01-18 04:12:36,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:12:36,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:36,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:36,170 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 04:12:36,171 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 04:12:36,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:12:36,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:36,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:36,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:36,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:36,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145712077] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:36,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:36,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 04:12:36,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535031947] [2022-01-18 04:12:36,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:36,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:36,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:36,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:36,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:36,378 INFO L87 Difference]: Start difference. First operand 1088 states and 3661 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 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 04:12:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:37,221 INFO L93 Difference]: Finished difference Result 2409 states and 7174 transitions. [2022-01-18 04:12:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 04:12:37,221 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 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 04:12:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:37,227 INFO L225 Difference]: With dead ends: 2409 [2022-01-18 04:12:37,227 INFO L226 Difference]: Without dead ends: 2409 [2022-01-18 04:12:37,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=757, Invalid=2105, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 04:12:37,229 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 308 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:37,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 229 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2022-01-18 04:12:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 1112. [2022-01-18 04:12:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.360936093609361) internal successors, (3734), 1111 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 3734 transitions. [2022-01-18 04:12:37,262 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 3734 transitions. Word has length 21 [2022-01-18 04:12:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:37,262 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 3734 transitions. [2022-01-18 04:12:37,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 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 04:12:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 3734 transitions. [2022-01-18 04:12:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:37,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:37,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:37,288 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 04:12:37,487 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 04:12:37,487 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1136089424, now seen corresponding path program 10 times [2022-01-18 04:12:37,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:37,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935085137] [2022-01-18 04:12:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:37,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:37,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:37,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935085137] [2022-01-18 04:12:37,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935085137] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:37,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670309058] [2022-01-18 04:12:37,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:12:37,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:37,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:37,520 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 04:12:37,529 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 04:12:37,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:12:37,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:37,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:37,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:37,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:37,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670309058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:37,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:37,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-01-18 04:12:37,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665248103] [2022-01-18 04:12:37,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:37,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:12:37,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:37,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:12:37,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:12:37,679 INFO L87 Difference]: Start difference. First operand 1112 states and 3734 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 04:12:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:37,829 INFO L93 Difference]: Finished difference Result 1740 states and 5391 transitions. [2022-01-18 04:12:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:12:37,829 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 21 [2022-01-18 04:12:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:37,834 INFO L225 Difference]: With dead ends: 1740 [2022-01-18 04:12:37,834 INFO L226 Difference]: Without dead ends: 1732 [2022-01-18 04:12:37,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:12:37,835 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 107 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:37,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 72 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2022-01-18 04:12:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1128. [2022-01-18 04:12:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1127 states have (on average 3.345164152617569) internal successors, (3770), 1127 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 3770 transitions. [2022-01-18 04:12:37,863 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 3770 transitions. Word has length 21 [2022-01-18 04:12:37,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:37,863 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 3770 transitions. [2022-01-18 04:12:37,863 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 04:12:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 3770 transitions. [2022-01-18 04:12:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:37,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:37,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:37,893 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 04:12:38,089 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 04:12:38,089 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:38,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1273082712, now seen corresponding path program 11 times [2022-01-18 04:12:38,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:38,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102802243] [2022-01-18 04:12:38,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:38,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:38,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102802243] [2022-01-18 04:12:38,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102802243] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265442164] [2022-01-18 04:12:38,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:12:38,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:38,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:38,131 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 04:12:38,134 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 04:12:38,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:12:38,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:38,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:38,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:38,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:38,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265442164] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:38,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:38,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-01-18 04:12:38,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453783158] [2022-01-18 04:12:38,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:38,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:38,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:38,347 INFO L87 Difference]: Start difference. First operand 1128 states and 3770 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:39,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:39,323 INFO L93 Difference]: Finished difference Result 3058 states and 9441 transitions. [2022-01-18 04:12:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 04:12:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:12:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:39,333 INFO L225 Difference]: With dead ends: 3058 [2022-01-18 04:12:39,333 INFO L226 Difference]: Without dead ends: 3058 [2022-01-18 04:12:39,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=975, Invalid=2685, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 04:12:39,334 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 341 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:39,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 166 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2022-01-18 04:12:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 1235. [2022-01-18 04:12:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 3.4173419773095626) internal successors, (4217), 1234 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 4217 transitions. [2022-01-18 04:12:39,382 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 4217 transitions. Word has length 21 [2022-01-18 04:12:39,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:39,383 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 4217 transitions. [2022-01-18 04:12:39,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 4217 transitions. [2022-01-18 04:12:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:39,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:39,386 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:39,409 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 04:12:39,599 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 04:12:39,599 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:39,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash -236400988, now seen corresponding path program 12 times [2022-01-18 04:12:39,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:39,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605520056] [2022-01-18 04:12:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:39,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:39,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:39,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605520056] [2022-01-18 04:12:39,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605520056] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:39,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240004721] [2022-01-18 04:12:39,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:12:39,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:39,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:39,640 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 04:12:39,642 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 04:12:39,671 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:12:39,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:39,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:39,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:39,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:39,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240004721] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:39,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:39,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-01-18 04:12:39,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75493028] [2022-01-18 04:12:39,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:39,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:39,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:39,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:39,870 INFO L87 Difference]: Start difference. First operand 1235 states and 4217 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 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 04:12:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:40,771 INFO L93 Difference]: Finished difference Result 2867 states and 8754 transitions. [2022-01-18 04:12:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 04:12:40,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 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 21 [2022-01-18 04:12:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:40,778 INFO L225 Difference]: With dead ends: 2867 [2022-01-18 04:12:40,778 INFO L226 Difference]: Without dead ends: 2867 [2022-01-18 04:12:40,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=716, Invalid=1834, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 04:12:40,780 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 288 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:40,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 202 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2022-01-18 04:12:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 1238. [2022-01-18 04:12:40,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.4033953112368636) internal successors, (4210), 1237 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4210 transitions. [2022-01-18 04:12:40,820 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4210 transitions. Word has length 21 [2022-01-18 04:12:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:40,820 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4210 transitions. [2022-01-18 04:12:40,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 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 04:12:40,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4210 transitions. [2022-01-18 04:12:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:40,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:40,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:40,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 04:12:41,039 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 04:12:41,039 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:41,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1223951006, now seen corresponding path program 13 times [2022-01-18 04:12:41,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176999002] [2022-01-18 04:12:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:41,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:41,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:41,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176999002] [2022-01-18 04:12:41,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176999002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:41,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034219294] [2022-01-18 04:12:41,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:12:41,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:41,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:41,072 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 04:12:41,072 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 04:12:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:41,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:41,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:41,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:41,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034219294] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:41,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:41,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-18 04:12:41,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404294097] [2022-01-18 04:12:41,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:41,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:12:41,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:12:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:12:41,220 INFO L87 Difference]: Start difference. First operand 1238 states and 4210 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:41,370 INFO L93 Difference]: Finished difference Result 2695 states and 8625 transitions. [2022-01-18 04:12:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:12:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:12:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:41,376 INFO L225 Difference]: With dead ends: 2695 [2022-01-18 04:12:41,376 INFO L226 Difference]: Without dead ends: 2695 [2022-01-18 04:12:41,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:12:41,377 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 122 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:41,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 74 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2022-01-18 04:12:41,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 1632. [2022-01-18 04:12:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.5113427345187) internal successors, (5727), 1631 states have internal predecessors, (5727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5727 transitions. [2022-01-18 04:12:41,421 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5727 transitions. Word has length 21 [2022-01-18 04:12:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:41,421 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5727 transitions. [2022-01-18 04:12:41,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5727 transitions. [2022-01-18 04:12:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:41,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:41,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:41,452 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 04:12:41,639 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 04:12:41,639 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1550959386, now seen corresponding path program 14 times [2022-01-18 04:12:41,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:41,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882381063] [2022-01-18 04:12:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:41,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:41,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:41,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882381063] [2022-01-18 04:12:41,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882381063] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:41,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201013991] [2022-01-18 04:12:41,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:12:41,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:41,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:41,670 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 04:12:41,674 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 04:12:41,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:41,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:41,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:41,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:41,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:41,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201013991] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:41,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:41,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-01-18 04:12:41,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711672835] [2022-01-18 04:12:41,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:41,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:12:41,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:41,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:12:41,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:12:41,790 INFO L87 Difference]: Start difference. First operand 1632 states and 5727 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:41,911 INFO L93 Difference]: Finished difference Result 2484 states and 8015 transitions. [2022-01-18 04:12:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 04:12:41,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:12:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:41,920 INFO L225 Difference]: With dead ends: 2484 [2022-01-18 04:12:41,920 INFO L226 Difference]: Without dead ends: 2476 [2022-01-18 04:12:41,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:12:41,920 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 155 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:41,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 46 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-01-18 04:12:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1632. [2022-01-18 04:12:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.505211526670754) internal successors, (5717), 1631 states have internal predecessors, (5717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5717 transitions. [2022-01-18 04:12:41,977 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5717 transitions. Word has length 21 [2022-01-18 04:12:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:41,977 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5717 transitions. [2022-01-18 04:12:41,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5717 transitions. [2022-01-18 04:12:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:41,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:41,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:42,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 04:12:42,195 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 04:12:42,195 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash -67824448, now seen corresponding path program 15 times [2022-01-18 04:12:42,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:42,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217518323] [2022-01-18 04:12:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:42,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:42,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:42,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217518323] [2022-01-18 04:12:42,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217518323] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:42,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577365637] [2022-01-18 04:12:42,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:12:42,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:42,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:42,237 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 04:12:42,260 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 04:12:42,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:12:42,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:42,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:42,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:42,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:42,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577365637] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:42,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:42,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-01-18 04:12:42,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808911697] [2022-01-18 04:12:42,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:42,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:12:42,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:42,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:12:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:12:42,362 INFO L87 Difference]: Start difference. First operand 1632 states and 5717 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 04:12:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:42,506 INFO L93 Difference]: Finished difference Result 2462 states and 7934 transitions. [2022-01-18 04:12:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:12:42,507 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 04:12:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:42,511 INFO L225 Difference]: With dead ends: 2462 [2022-01-18 04:12:42,511 INFO L226 Difference]: Without dead ends: 2440 [2022-01-18 04:12:42,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:12:42,512 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 175 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:42,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 58 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:42,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2022-01-18 04:12:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1678. [2022-01-18 04:12:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 3.4806201550387597) internal successors, (5837), 1677 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 5837 transitions. [2022-01-18 04:12:42,545 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 5837 transitions. Word has length 21 [2022-01-18 04:12:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:42,545 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 5837 transitions. [2022-01-18 04:12:42,545 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 04:12:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 5837 transitions. [2022-01-18 04:12:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:42,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:42,549 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:42,571 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 04:12:42,767 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 04:12:42,767 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:42,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1112056286, now seen corresponding path program 16 times [2022-01-18 04:12:42,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:42,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720136681] [2022-01-18 04:12:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:42,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:42,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:42,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720136681] [2022-01-18 04:12:42,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720136681] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:42,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846998732] [2022-01-18 04:12:42,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:12:42,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:42,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:42,812 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 04:12:42,828 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 04:12:42,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:12:42,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:42,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:42,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:42,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:43,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846998732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:43,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:43,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-01-18 04:12:43,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996772157] [2022-01-18 04:12:43,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:43,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:43,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:43,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:43,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:43,010 INFO L87 Difference]: Start difference. First operand 1678 states and 5837 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 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 04:12:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:43,837 INFO L93 Difference]: Finished difference Result 2987 states and 9432 transitions. [2022-01-18 04:12:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 04:12:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 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 04:12:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:43,845 INFO L225 Difference]: With dead ends: 2987 [2022-01-18 04:12:43,845 INFO L226 Difference]: Without dead ends: 2987 [2022-01-18 04:12:43,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 04:12:43,846 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 220 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:43,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 171 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2022-01-18 04:12:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1697. [2022-01-18 04:12:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1696 states have (on average 3.4929245283018866) internal successors, (5924), 1696 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 5924 transitions. [2022-01-18 04:12:43,891 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 5924 transitions. Word has length 21 [2022-01-18 04:12:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:43,892 INFO L470 AbstractCegarLoop]: Abstraction has 1697 states and 5924 transitions. [2022-01-18 04:12:43,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 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 04:12:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 5924 transitions. [2022-01-18 04:12:43,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:43,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:43,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:43,915 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 04:12:44,107 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 04:12:44,107 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:44,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash 985180638, now seen corresponding path program 17 times [2022-01-18 04:12:44,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:44,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115383969] [2022-01-18 04:12:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:44,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:44,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:44,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115383969] [2022-01-18 04:12:44,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115383969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:44,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888099903] [2022-01-18 04:12:44,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:12:44,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:44,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:44,156 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 04:12:44,160 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 04:12:44,182 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:44,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:44,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:44,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:44,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:44,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888099903] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:44,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:44,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-01-18 04:12:44,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967679628] [2022-01-18 04:12:44,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:44,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:44,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:44,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:44,370 INFO L87 Difference]: Start difference. First operand 1697 states and 5924 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:12:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:44,910 INFO L93 Difference]: Finished difference Result 2545 states and 8132 transitions. [2022-01-18 04:12:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 04:12:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:12:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:44,915 INFO L225 Difference]: With dead ends: 2545 [2022-01-18 04:12:44,915 INFO L226 Difference]: Without dead ends: 2531 [2022-01-18 04:12:44,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 04:12:44,916 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 231 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:44,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 151 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-01-18 04:12:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1697. [2022-01-18 04:12:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1696 states have (on average 3.490566037735849) internal successors, (5920), 1696 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 5920 transitions. [2022-01-18 04:12:44,974 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 5920 transitions. Word has length 21 [2022-01-18 04:12:44,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:44,974 INFO L470 AbstractCegarLoop]: Abstraction has 1697 states and 5920 transitions. [2022-01-18 04:12:44,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:12:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 5920 transitions. [2022-01-18 04:12:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:44,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:44,979 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:45,004 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 04:12:45,201 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 04:12:45,201 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2036430370, now seen corresponding path program 18 times [2022-01-18 04:12:45,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:45,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086411821] [2022-01-18 04:12:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:45,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:45,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:45,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086411821] [2022-01-18 04:12:45,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086411821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:45,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899080379] [2022-01-18 04:12:45,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:12:45,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:45,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:45,246 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:12:45,246 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 04:12:45,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 04:12:45,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:45,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:45,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:45,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:45,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899080379] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:45,449 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:45,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-01-18 04:12:45,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757105986] [2022-01-18 04:12:45,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:45,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:45,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:45,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:45,450 INFO L87 Difference]: Start difference. First operand 1697 states and 5920 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:12:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:46,006 INFO L93 Difference]: Finished difference Result 2598 states and 8275 transitions. [2022-01-18 04:12:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 04:12:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:12:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:46,012 INFO L225 Difference]: With dead ends: 2598 [2022-01-18 04:12:46,012 INFO L226 Difference]: Without dead ends: 2584 [2022-01-18 04:12:46,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 04:12:46,012 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 229 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:46,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 165 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2022-01-18 04:12:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1693. [2022-01-18 04:12:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 3.49290780141844) internal successors, (5910), 1692 states have internal predecessors, (5910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 5910 transitions. [2022-01-18 04:12:46,048 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 5910 transitions. Word has length 21 [2022-01-18 04:12:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:46,049 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 5910 transitions. [2022-01-18 04:12:46,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:12:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 5910 transitions. [2022-01-18 04:12:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:46,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:46,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:46,079 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 04:12:46,267 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 04:12:46,267 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash -931835678, now seen corresponding path program 19 times [2022-01-18 04:12:46,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:46,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041592878] [2022-01-18 04:12:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:46,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:46,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:46,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041592878] [2022-01-18 04:12:46,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041592878] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:46,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327326329] [2022-01-18 04:12:46,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:12:46,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:46,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:46,310 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 04:12:46,330 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 04:12:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:46,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:46,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:46,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:46,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327326329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:46,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:46,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-01-18 04:12:46,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764032726] [2022-01-18 04:12:46,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:46,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:46,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:46,550 INFO L87 Difference]: Start difference. First operand 1693 states and 5910 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 04:12:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:47,222 INFO L93 Difference]: Finished difference Result 2692 states and 8549 transitions. [2022-01-18 04:12:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 04:12:47,222 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 21 [2022-01-18 04:12:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:47,226 INFO L225 Difference]: With dead ends: 2692 [2022-01-18 04:12:47,226 INFO L226 Difference]: Without dead ends: 2680 [2022-01-18 04:12:47,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=392, Invalid=1248, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 04:12:47,227 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 194 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:47,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 188 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-18 04:12:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1684. [2022-01-18 04:12:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 3.4937611408199643) internal successors, (5880), 1683 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 5880 transitions. [2022-01-18 04:12:47,266 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 5880 transitions. Word has length 21 [2022-01-18 04:12:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:47,266 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 5880 transitions. [2022-01-18 04:12:47,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 04:12:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 5880 transitions. [2022-01-18 04:12:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:47,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:47,270 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:47,291 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 04:12:47,490 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 04:12:47,491 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:47,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1942186098, now seen corresponding path program 1 times [2022-01-18 04:12:47,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:47,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802117695] [2022-01-18 04:12:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:47,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:47,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:47,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802117695] [2022-01-18 04:12:47,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802117695] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:47,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276250615] [2022-01-18 04:12:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:47,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:47,529 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 04:12:47,529 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 04:12:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:47,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:47,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:47,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:47,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276250615] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:47,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:47,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 04:12:47,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283384070] [2022-01-18 04:12:47,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:47,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:47,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:47,715 INFO L87 Difference]: Start difference. First operand 1684 states and 5880 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 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 04:12:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:48,165 INFO L93 Difference]: Finished difference Result 2346 states and 7504 transitions. [2022-01-18 04:12:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 04:12:48,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 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 04:12:48,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:48,170 INFO L225 Difference]: With dead ends: 2346 [2022-01-18 04:12:48,170 INFO L226 Difference]: Without dead ends: 2346 [2022-01-18 04:12:48,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:12:48,170 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 183 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:48,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 170 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:48,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2022-01-18 04:12:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1738. [2022-01-18 04:12:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 3.482440990213011) internal successors, (6049), 1737 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 6049 transitions. [2022-01-18 04:12:48,206 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 6049 transitions. Word has length 21 [2022-01-18 04:12:48,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:48,206 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 6049 transitions. [2022-01-18 04:12:48,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 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 04:12:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 6049 transitions. [2022-01-18 04:12:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:48,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:48,210 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:48,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-18 04:12:48,431 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 04:12:48,431 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:48,431 INFO L85 PathProgramCache]: Analyzing trace with hash 57074606, now seen corresponding path program 2 times [2022-01-18 04:12:48,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:48,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44054693] [2022-01-18 04:12:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:48,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:48,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:48,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44054693] [2022-01-18 04:12:48,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44054693] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:48,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827323629] [2022-01-18 04:12:48,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:12:48,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:48,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:48,472 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 04:12:48,472 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 04:12:48,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:48,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:48,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:48,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:48,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:48,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827323629] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:48,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:48,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-01-18 04:12:48,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968999125] [2022-01-18 04:12:48,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:48,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:12:48,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:12:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:12:48,588 INFO L87 Difference]: Start difference. First operand 1738 states and 6049 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 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 04:12:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:48,726 INFO L93 Difference]: Finished difference Result 3182 states and 10482 transitions. [2022-01-18 04:12:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:12:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 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 21 [2022-01-18 04:12:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:48,732 INFO L225 Difference]: With dead ends: 3182 [2022-01-18 04:12:48,732 INFO L226 Difference]: Without dead ends: 3170 [2022-01-18 04:12:48,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:12:48,732 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 200 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:48,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 53 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-01-18 04:12:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 1964. [2022-01-18 04:12:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1963 states have (on average 3.5252165053489555) internal successors, (6920), 1963 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 6920 transitions. [2022-01-18 04:12:48,770 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 6920 transitions. Word has length 21 [2022-01-18 04:12:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:48,770 INFO L470 AbstractCegarLoop]: Abstraction has 1964 states and 6920 transitions. [2022-01-18 04:12:48,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 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 04:12:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 6920 transitions. [2022-01-18 04:12:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:48,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:48,774 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:48,797 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 04:12:48,996 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 04:12:48,997 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1957334190, now seen corresponding path program 3 times [2022-01-18 04:12:48,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:48,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941798067] [2022-01-18 04:12:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:48,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:49,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:49,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941798067] [2022-01-18 04:12:49,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941798067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:49,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512296595] [2022-01-18 04:12:49,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:12:49,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:49,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:49,030 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 04:12:49,032 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 04:12:49,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:12:49,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:49,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:49,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:49,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:49,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512296595] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:49,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:49,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-18 04:12:49,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315966209] [2022-01-18 04:12:49,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:49,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:12:49,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:49,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:12:49,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:12:49,164 INFO L87 Difference]: Start difference. First operand 1964 states and 6920 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 04:12:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:49,317 INFO L93 Difference]: Finished difference Result 3443 states and 11289 transitions. [2022-01-18 04:12:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:12:49,317 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 21 [2022-01-18 04:12:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:49,322 INFO L225 Difference]: With dead ends: 3443 [2022-01-18 04:12:49,322 INFO L226 Difference]: Without dead ends: 3443 [2022-01-18 04:12:49,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:12:49,323 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 155 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:49,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 68 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2022-01-18 04:12:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1967. [2022-01-18 04:12:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1966 states have (on average 3.51881993896236) internal successors, (6918), 1966 states have internal predecessors, (6918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 6918 transitions. [2022-01-18 04:12:49,358 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 6918 transitions. Word has length 21 [2022-01-18 04:12:49,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:49,358 INFO L470 AbstractCegarLoop]: Abstraction has 1967 states and 6918 transitions. [2022-01-18 04:12:49,358 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 04:12:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 6918 transitions. [2022-01-18 04:12:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:49,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:49,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:49,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:49,575 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 04:12:49,575 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:49,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2031398486, now seen corresponding path program 4 times [2022-01-18 04:12:49,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:49,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331532547] [2022-01-18 04:12:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:49,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:49,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:49,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331532547] [2022-01-18 04:12:49,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331532547] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:49,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097230627] [2022-01-18 04:12:49,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:12:49,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:49,611 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 04:12:49,611 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 04:12:49,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:12:49,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:49,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:49,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:49,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:12:49,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097230627] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:49,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:49,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 11 [2022-01-18 04:12:49,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014765237] [2022-01-18 04:12:49,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:49,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:12:49,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:12:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:12:49,809 INFO L87 Difference]: Start difference. First operand 1967 states and 6918 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:50,160 INFO L93 Difference]: Finished difference Result 2329 states and 7790 transitions. [2022-01-18 04:12:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 04:12:50,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:50,164 INFO L225 Difference]: With dead ends: 2329 [2022-01-18 04:12:50,164 INFO L226 Difference]: Without dead ends: 2315 [2022-01-18 04:12:50,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:12:50,165 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 120 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:50,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 153 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:50,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2022-01-18 04:12:50,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1967. [2022-01-18 04:12:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1966 states have (on average 3.517802644964395) internal successors, (6916), 1966 states have internal predecessors, (6916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 6916 transitions. [2022-01-18 04:12:50,194 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 6916 transitions. Word has length 21 [2022-01-18 04:12:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:50,194 INFO L470 AbstractCegarLoop]: Abstraction has 1967 states and 6916 transitions. [2022-01-18 04:12:50,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 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 04:12:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 6916 transitions. [2022-01-18 04:12:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:50,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:50,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:50,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:50,398 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 04:12:50,398 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1038218894, now seen corresponding path program 5 times [2022-01-18 04:12:50,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:50,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521099841] [2022-01-18 04:12:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:50,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:50,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:50,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521099841] [2022-01-18 04:12:50,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521099841] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:50,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972096235] [2022-01-18 04:12:50,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:12:50,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:50,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:50,440 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 04:12:50,442 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 04:12:50,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:12:50,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:50,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:12:50,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:50,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:50,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972096235] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:50,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:50,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 04:12:50,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809924626] [2022-01-18 04:12:50,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:50,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:12:50,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:12:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:12:50,583 INFO L87 Difference]: Start difference. First operand 1967 states and 6916 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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 04:12:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:50,794 INFO L93 Difference]: Finished difference Result 3606 states and 11938 transitions. [2022-01-18 04:12:50,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 04:12:50,794 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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 21 [2022-01-18 04:12:50,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:50,802 INFO L225 Difference]: With dead ends: 3606 [2022-01-18 04:12:50,802 INFO L226 Difference]: Without dead ends: 3599 [2022-01-18 04:12:50,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:12:50,802 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 163 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:50,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 88 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:12:50,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2022-01-18 04:12:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 2189. [2022-01-18 04:12:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 2188 states have (on average 3.537934186471664) internal successors, (7741), 2188 states have internal predecessors, (7741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 7741 transitions. [2022-01-18 04:12:50,844 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 7741 transitions. Word has length 21 [2022-01-18 04:12:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:50,845 INFO L470 AbstractCegarLoop]: Abstraction has 2189 states and 7741 transitions. [2022-01-18 04:12:50,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 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 04:12:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 7741 transitions. [2022-01-18 04:12:50,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:50,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:50,848 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:50,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-18 04:12:51,049 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 04:12:51,049 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:51,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash -487787106, now seen corresponding path program 6 times [2022-01-18 04:12:51,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:51,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737055363] [2022-01-18 04:12:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:51,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:51,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:51,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737055363] [2022-01-18 04:12:51,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737055363] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:51,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927356905] [2022-01-18 04:12:51,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:12:51,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:51,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:51,089 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 04:12:51,089 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 04:12:51,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 04:12:51,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:51,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:51,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:51,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:51,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927356905] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:51,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:51,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 04:12:51,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962180813] [2022-01-18 04:12:51,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:51,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:12:51,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:51,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:12:51,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:12:51,297 INFO L87 Difference]: Start difference. First operand 2189 states and 7741 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 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 04:12:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:51,646 INFO L93 Difference]: Finished difference Result 2810 states and 9248 transitions. [2022-01-18 04:12:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 04:12:51,646 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 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 04:12:51,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:51,650 INFO L225 Difference]: With dead ends: 2810 [2022-01-18 04:12:51,650 INFO L226 Difference]: Without dead ends: 2764 [2022-01-18 04:12:51,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2022-01-18 04:12:51,651 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 164 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:51,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 168 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:51,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-01-18 04:12:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2248. [2022-01-18 04:12:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2247 states have (on average 3.51935914552737) internal successors, (7908), 2247 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 7908 transitions. [2022-01-18 04:12:51,683 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 7908 transitions. Word has length 21 [2022-01-18 04:12:51,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:51,684 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 7908 transitions. [2022-01-18 04:12:51,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 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 04:12:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 7908 transitions. [2022-01-18 04:12:51,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:51,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:51,689 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 04:12:51,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:51,902 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 04:12:51,903 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1640366058, now seen corresponding path program 4 times [2022-01-18 04:12:51,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:51,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367660590] [2022-01-18 04:12:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:51,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:51,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367660590] [2022-01-18 04:12:51,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367660590] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717609535] [2022-01-18 04:12:51,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:12:51,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:51,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:51,970 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 04:12:51,973 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 04:12:52,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:12:52,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:52,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:12:52,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:52,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:52,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717609535] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:52,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:52,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-01-18 04:12:52,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880108385] [2022-01-18 04:12:52,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:52,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:12:52,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:12:52,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:12:52,201 INFO L87 Difference]: Start difference. First operand 2248 states and 7908 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 04:12:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:52,723 INFO L93 Difference]: Finished difference Result 3344 states and 11103 transitions. [2022-01-18 04:12:52,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 04:12:52,723 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 04:12:52,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:52,729 INFO L225 Difference]: With dead ends: 3344 [2022-01-18 04:12:52,729 INFO L226 Difference]: Without dead ends: 3330 [2022-01-18 04:12:52,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 04:12:52,730 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 171 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:52,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 127 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2022-01-18 04:12:52,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 2210. [2022-01-18 04:12:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2209 states have (on average 3.5224083295608875) internal successors, (7781), 2209 states have internal predecessors, (7781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 7781 transitions. [2022-01-18 04:12:52,769 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 7781 transitions. Word has length 21 [2022-01-18 04:12:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:52,769 INFO L470 AbstractCegarLoop]: Abstraction has 2210 states and 7781 transitions. [2022-01-18 04:12:52,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 04:12:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 7781 transitions. [2022-01-18 04:12:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:52,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:52,772 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 04:12:52,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 04:12:52,973 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 04:12:52,973 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:52,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1138059314, now seen corresponding path program 5 times [2022-01-18 04:12:52,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:52,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967851218] [2022-01-18 04:12:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:52,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:53,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:53,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967851218] [2022-01-18 04:12:53,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967851218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:53,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147515650] [2022-01-18 04:12:53,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:12:53,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:53,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:53,025 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 04:12:53,051 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 04:12:53,058 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:12:53,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:53,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:12:53,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:53,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:53,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147515650] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:53,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:53,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-01-18 04:12:53,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382815625] [2022-01-18 04:12:53,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:53,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:12:53,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:12:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:12:53,267 INFO L87 Difference]: Start difference. First operand 2210 states and 7781 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 04:12:54,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:54,259 INFO L93 Difference]: Finished difference Result 6661 states and 21393 transitions. [2022-01-18 04:12:54,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 04:12:54,260 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 04:12:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:54,272 INFO L225 Difference]: With dead ends: 6661 [2022-01-18 04:12:54,272 INFO L226 Difference]: Without dead ends: 6647 [2022-01-18 04:12:54,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=740, Invalid=2340, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 04:12:54,274 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 361 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:54,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 300 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2022-01-18 04:12:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 2933. [2022-01-18 04:12:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2932 states have (on average 3.6306275579809) internal successors, (10645), 2932 states have internal predecessors, (10645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 10645 transitions. [2022-01-18 04:12:54,342 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 10645 transitions. Word has length 21 [2022-01-18 04:12:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:54,342 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 10645 transitions. [2022-01-18 04:12:54,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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 04:12:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 10645 transitions. [2022-01-18 04:12:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:54,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:54,348 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:54,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 04:12:54,554 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 04:12:54,554 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:54,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash -369540942, now seen corresponding path program 7 times [2022-01-18 04:12:54,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:54,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107098939] [2022-01-18 04:12:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:54,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:54,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:54,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107098939] [2022-01-18 04:12:54,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107098939] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:54,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615932755] [2022-01-18 04:12:54,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:12:54,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:54,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:54,607 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 04:12:54,611 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 04:12:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:54,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:54,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:54,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:54,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615932755] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:54,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:54,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-01-18 04:12:54,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172481444] [2022-01-18 04:12:54,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:54,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:12:54,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:54,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:12:54,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:12:54,812 INFO L87 Difference]: Start difference. First operand 2933 states and 10645 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 04:12:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:55,296 INFO L93 Difference]: Finished difference Result 3680 states and 12565 transitions. [2022-01-18 04:12:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:12:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 21 [2022-01-18 04:12:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:55,304 INFO L225 Difference]: With dead ends: 3680 [2022-01-18 04:12:55,304 INFO L226 Difference]: Without dead ends: 3672 [2022-01-18 04:12:55,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 04:12:55,305 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 143 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:55,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 223 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:12:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2022-01-18 04:12:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2993. [2022-01-18 04:12:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2992 states have (on average 3.615975935828877) internal successors, (10819), 2992 states have internal predecessors, (10819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 10819 transitions. [2022-01-18 04:12:55,352 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 10819 transitions. Word has length 21 [2022-01-18 04:12:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:55,352 INFO L470 AbstractCegarLoop]: Abstraction has 2993 states and 10819 transitions. [2022-01-18 04:12:55,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 04:12:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 10819 transitions. [2022-01-18 04:12:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:55,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:55,358 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:55,374 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 04:12:55,558 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 04:12:55,559 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash 78717418, now seen corresponding path program 8 times [2022-01-18 04:12:55,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:55,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163547759] [2022-01-18 04:12:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:55,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:55,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163547759] [2022-01-18 04:12:55,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163547759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396070862] [2022-01-18 04:12:55,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:12:55,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:55,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:55,609 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 04:12:55,653 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 04:12:55,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:12:55,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:55,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:55,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:55,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396070862] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:55,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:55,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-01-18 04:12:55,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102841174] [2022-01-18 04:12:55,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:55,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:12:55,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:12:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:12:55,863 INFO L87 Difference]: Start difference. First operand 2993 states and 10819 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:12:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:56,492 INFO L93 Difference]: Finished difference Result 4006 states and 13387 transitions. [2022-01-18 04:12:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 04:12:56,492 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 21 [2022-01-18 04:12:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:56,499 INFO L225 Difference]: With dead ends: 4006 [2022-01-18 04:12:56,499 INFO L226 Difference]: Without dead ends: 3998 [2022-01-18 04:12:56,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=1611, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 04:12:56,500 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 237 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:56,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 195 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-01-18 04:12:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3031. [2022-01-18 04:12:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 3030 states have (on average 3.613201320132013) internal successors, (10948), 3030 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 10948 transitions. [2022-01-18 04:12:56,549 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 10948 transitions. Word has length 21 [2022-01-18 04:12:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:56,549 INFO L470 AbstractCegarLoop]: Abstraction has 3031 states and 10948 transitions. [2022-01-18 04:12:56,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:12:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 10948 transitions. [2022-01-18 04:12:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:56,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:56,554 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:56,569 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 04:12:56,754 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 04:12:56,755 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:56,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash -48158230, now seen corresponding path program 9 times [2022-01-18 04:12:56,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:56,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257117040] [2022-01-18 04:12:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:56,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:56,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:56,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257117040] [2022-01-18 04:12:56,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257117040] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:56,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635796055] [2022-01-18 04:12:56,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:12:56,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:56,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:56,791 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 04:12:56,791 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 04:12:56,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 04:12:56,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:56,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:56,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:56,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:57,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635796055] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:57,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:57,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-01-18 04:12:57,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38843186] [2022-01-18 04:12:57,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:57,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:12:57,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:57,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:12:57,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:12:57,001 INFO L87 Difference]: Start difference. First operand 3031 states and 10948 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 04:12:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:57,621 INFO L93 Difference]: Finished difference Result 3847 states and 12978 transitions. [2022-01-18 04:12:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 04:12:57,621 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 04:12:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:57,629 INFO L225 Difference]: With dead ends: 3847 [2022-01-18 04:12:57,629 INFO L226 Difference]: Without dead ends: 3826 [2022-01-18 04:12:57,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1278, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 04:12:57,630 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 188 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:57,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 287 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2022-01-18 04:12:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 2972. [2022-01-18 04:12:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2971 states have (on average 3.6226859643217773) internal successors, (10763), 2971 states have internal predecessors, (10763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 10763 transitions. [2022-01-18 04:12:57,684 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 10763 transitions. Word has length 21 [2022-01-18 04:12:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:57,684 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 10763 transitions. [2022-01-18 04:12:57,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 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 04:12:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 10763 transitions. [2022-01-18 04:12:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:57,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:57,691 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:12:57,709 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 04:12:57,899 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 04:12:57,899 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1428493522, now seen corresponding path program 10 times [2022-01-18 04:12:57,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:57,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879963455] [2022-01-18 04:12:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:57,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:57,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:57,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879963455] [2022-01-18 04:12:57,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879963455] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:57,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005696560] [2022-01-18 04:12:57,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:12:57,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:57,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:57,941 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 04:12:57,942 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 04:12:57,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:12:57,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:57,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:12:57,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:58,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:58,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005696560] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:58,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:58,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-01-18 04:12:58,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874865611] [2022-01-18 04:12:58,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:58,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:12:58,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:12:58,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:12:58,162 INFO L87 Difference]: Start difference. First operand 2972 states and 10763 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 04:12:58,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:12:58,831 INFO L93 Difference]: Finished difference Result 4280 states and 14653 transitions. [2022-01-18 04:12:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 04:12:58,833 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 21 [2022-01-18 04:12:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:12:58,841 INFO L225 Difference]: With dead ends: 4280 [2022-01-18 04:12:58,841 INFO L226 Difference]: Without dead ends: 4272 [2022-01-18 04:12:58,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 04:12:58,842 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 151 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:12:58,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 315 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:12:58,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2022-01-18 04:12:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 2956. [2022-01-18 04:12:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2955 states have (on average 3.632148900169205) internal successors, (10733), 2955 states have internal predecessors, (10733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:12:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 10733 transitions. [2022-01-18 04:12:58,895 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 10733 transitions. Word has length 21 [2022-01-18 04:12:58,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:12:58,895 INFO L470 AbstractCegarLoop]: Abstraction has 2956 states and 10733 transitions. [2022-01-18 04:12:58,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 04:12:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 10733 transitions. [2022-01-18 04:12:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:12:58,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:12:58,900 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 04:12:58,915 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 04:12:59,100 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 04:12:59,101 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:12:59,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:12:59,101 INFO L85 PathProgramCache]: Analyzing trace with hash -981882646, now seen corresponding path program 6 times [2022-01-18 04:12:59,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:12:59,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072039631] [2022-01-18 04:12:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:12:59,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:12:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:12:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:59,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:12:59,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072039631] [2022-01-18 04:12:59,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072039631] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:12:59,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753570268] [2022-01-18 04:12:59,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:12:59,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:12:59,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:12:59,142 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 04:12:59,143 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 04:12:59,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:12:59,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:12:59,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:12:59,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:12:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:59,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:12:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:12:59,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753570268] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:12:59,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:12:59,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-01-18 04:12:59,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416205660] [2022-01-18 04:12:59,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:12:59,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:12:59,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:12:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:12:59,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:12:59,312 INFO L87 Difference]: Start difference. First operand 2956 states and 10733 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:00,284 INFO L93 Difference]: Finished difference Result 5648 states and 18229 transitions. [2022-01-18 04:13:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 04:13:00,284 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:13:00,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:00,294 INFO L225 Difference]: With dead ends: 5648 [2022-01-18 04:13:00,294 INFO L226 Difference]: Without dead ends: 5608 [2022-01-18 04:13:00,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=775, Invalid=3131, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 04:13:00,295 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 461 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:00,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 263 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5608 states. [2022-01-18 04:13:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5608 to 2636. [2022-01-18 04:13:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 3.5874762808349145) internal successors, (9453), 2635 states have internal predecessors, (9453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 9453 transitions. [2022-01-18 04:13:00,434 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 9453 transitions. Word has length 21 [2022-01-18 04:13:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:00,434 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 9453 transitions. [2022-01-18 04:13:00,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 9453 transitions. [2022-01-18 04:13:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:13:00,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:00,440 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 04:13:00,463 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 04:13:00,640 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 04:13:00,641 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1147980128, now seen corresponding path program 7 times [2022-01-18 04:13:00,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:00,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988605963] [2022-01-18 04:13:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:00,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:00,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:00,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988605963] [2022-01-18 04:13:00,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988605963] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:00,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045146741] [2022-01-18 04:13:00,685 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:13:00,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:00,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:00,686 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 04:13:00,688 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 04:13:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:00,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:13:00,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:00,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:00,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045146741] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:00,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:00,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-01-18 04:13:00,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349563095] [2022-01-18 04:13:00,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:00,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:13:00,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:13:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:13:00,870 INFO L87 Difference]: Start difference. First operand 2636 states and 9453 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:13:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:01,769 INFO L93 Difference]: Finished difference Result 6339 states and 20851 transitions. [2022-01-18 04:13:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 04:13:01,769 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:13:01,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:01,783 INFO L225 Difference]: With dead ends: 6339 [2022-01-18 04:13:01,783 INFO L226 Difference]: Without dead ends: 6319 [2022-01-18 04:13:01,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=757, Invalid=2435, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 04:13:01,787 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 501 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:01,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 160 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2022-01-18 04:13:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 2792. [2022-01-18 04:13:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2791 states have (on average 3.637764242207094) internal successors, (10153), 2791 states have internal predecessors, (10153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 10153 transitions. [2022-01-18 04:13:01,881 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 10153 transitions. Word has length 21 [2022-01-18 04:13:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:01,881 INFO L470 AbstractCegarLoop]: Abstraction has 2792 states and 10153 transitions. [2022-01-18 04:13:01,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 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 04:13:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 10153 transitions. [2022-01-18 04:13:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:13:01,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:01,888 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 04:13:01,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:02,110 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 04:13:02,110 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:02,110 INFO L85 PathProgramCache]: Analyzing trace with hash -169422684, now seen corresponding path program 8 times [2022-01-18 04:13:02,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:02,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195006126] [2022-01-18 04:13:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:02,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:02,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:02,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195006126] [2022-01-18 04:13:02,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195006126] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:02,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687433539] [2022-01-18 04:13:02,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:13:02,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:02,158 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 04:13:02,159 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 04:13:02,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:13:02,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:02,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:13:02,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:02,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:02,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687433539] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:02,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:02,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-01-18 04:13:02,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154272654] [2022-01-18 04:13:02,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:02,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:13:02,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:13:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:13:02,344 INFO L87 Difference]: Start difference. First operand 2792 states and 10153 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 04:13:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:03,137 INFO L93 Difference]: Finished difference Result 6781 states and 22584 transitions. [2022-01-18 04:13:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 04:13:03,137 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 21 [2022-01-18 04:13:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:03,150 INFO L225 Difference]: With dead ends: 6781 [2022-01-18 04:13:03,150 INFO L226 Difference]: Without dead ends: 6781 [2022-01-18 04:13:03,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 04:13:03,151 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 438 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:03,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 156 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2022-01-18 04:13:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 2837. [2022-01-18 04:13:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2837 states, 2836 states have (on average 3.6361071932299014) internal successors, (10312), 2836 states have internal predecessors, (10312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 10312 transitions. [2022-01-18 04:13:03,216 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 10312 transitions. Word has length 21 [2022-01-18 04:13:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:03,217 INFO L470 AbstractCegarLoop]: Abstraction has 2837 states and 10312 transitions. [2022-01-18 04:13:03,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 04:13:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 10312 transitions. [2022-01-18 04:13:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:13:03,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:03,221 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 04:13:03,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 04:13:03,421 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 04:13:03,421 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:03,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1853295848, now seen corresponding path program 9 times [2022-01-18 04:13:03,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:03,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568807986] [2022-01-18 04:13:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:03,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:03,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:03,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568807986] [2022-01-18 04:13:03,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568807986] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:03,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225027797] [2022-01-18 04:13:03,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:13:03,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:03,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:03,475 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 04:13:03,501 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 04:13:03,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 04:13:03,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:03,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:13:03,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:03,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:03,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225027797] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:03,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:03,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2022-01-18 04:13:03,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275196464] [2022-01-18 04:13:03,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:03,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:13:03,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:13:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:13:03,668 INFO L87 Difference]: Start difference. First operand 2837 states and 10312 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:04,309 INFO L93 Difference]: Finished difference Result 4771 states and 15849 transitions. [2022-01-18 04:13:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 04:13:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:13:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:04,318 INFO L225 Difference]: With dead ends: 4771 [2022-01-18 04:13:04,318 INFO L226 Difference]: Without dead ends: 4751 [2022-01-18 04:13:04,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 04:13:04,319 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 277 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:04,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 166 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2022-01-18 04:13:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 2847. [2022-01-18 04:13:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 2846 states have (on average 3.635628952916374) internal successors, (10347), 2846 states have internal predecessors, (10347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 10347 transitions. [2022-01-18 04:13:04,370 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 10347 transitions. Word has length 21 [2022-01-18 04:13:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:04,370 INFO L470 AbstractCegarLoop]: Abstraction has 2847 states and 10347 transitions. [2022-01-18 04:13:04,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 10347 transitions. [2022-01-18 04:13:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:13:04,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:04,374 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 04:13:04,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-01-18 04:13:04,574 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 04:13:04,575 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1140493464, now seen corresponding path program 10 times [2022-01-18 04:13:04,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:04,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102456642] [2022-01-18 04:13:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:04,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:04,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:04,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102456642] [2022-01-18 04:13:04,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102456642] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:04,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802672190] [2022-01-18 04:13:04,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:13:04,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:04,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:04,608 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 04:13:04,609 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 04:13:04,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:13:04,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:04,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:13:04,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:04,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:04,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802672190] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:04,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:04,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-01-18 04:13:04,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997422067] [2022-01-18 04:13:04,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:04,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:13:04,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:13:04,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:13:04,770 INFO L87 Difference]: Start difference. First operand 2847 states and 10347 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:05,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:05,434 INFO L93 Difference]: Finished difference Result 4772 states and 15704 transitions. [2022-01-18 04:13:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 04:13:05,434 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:13:05,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:05,443 INFO L225 Difference]: With dead ends: 4772 [2022-01-18 04:13:05,444 INFO L226 Difference]: Without dead ends: 4744 [2022-01-18 04:13:05,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=613, Invalid=1739, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 04:13:05,444 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 304 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:05,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 149 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2022-01-18 04:13:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 2845. [2022-01-18 04:13:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2844 states have (on average 3.6353727144866386) internal successors, (10339), 2844 states have internal predecessors, (10339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 10339 transitions. [2022-01-18 04:13:05,498 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 10339 transitions. Word has length 21 [2022-01-18 04:13:05,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:05,498 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 10339 transitions. [2022-01-18 04:13:05,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 10339 transitions. [2022-01-18 04:13:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:13:05,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:05,502 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 04:13:05,517 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 04:13:05,702 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 04:13:05,703 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1138871444, now seen corresponding path program 11 times [2022-01-18 04:13:05,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:05,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113189918] [2022-01-18 04:13:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:05,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:05,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113189918] [2022-01-18 04:13:05,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113189918] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393360926] [2022-01-18 04:13:05,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:13:05,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:05,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:05,733 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 04:13:05,733 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 04:13:05,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:13:05,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:05,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:13:05,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:05,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:05,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393360926] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:05,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:05,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 04:13:05,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000642814] [2022-01-18 04:13:05,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:05,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:13:05,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:05,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:13:05,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:13:05,901 INFO L87 Difference]: Start difference. First operand 2845 states and 10339 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:06,496 INFO L93 Difference]: Finished difference Result 6771 states and 22668 transitions. [2022-01-18 04:13:06,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 04:13:06,496 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:13:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:06,509 INFO L225 Difference]: With dead ends: 6771 [2022-01-18 04:13:06,509 INFO L226 Difference]: Without dead ends: 6771 [2022-01-18 04:13:06,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=479, Invalid=1081, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 04:13:06,510 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 245 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:06,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 172 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:13:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2022-01-18 04:13:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 2907. [2022-01-18 04:13:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2906 states have (on average 3.6593255333792154) internal successors, (10634), 2906 states have internal predecessors, (10634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 10634 transitions. [2022-01-18 04:13:06,578 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 10634 transitions. Word has length 21 [2022-01-18 04:13:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:06,578 INFO L470 AbstractCegarLoop]: Abstraction has 2907 states and 10634 transitions. [2022-01-18 04:13:06,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 10634 transitions. [2022-01-18 04:13:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:13:06,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:06,583 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 04:13:06,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:06,783 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 04:13:06,783 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1036153892, now seen corresponding path program 12 times [2022-01-18 04:13:06,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:06,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969120919] [2022-01-18 04:13:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:06,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:06,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:06,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969120919] [2022-01-18 04:13:06,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969120919] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:06,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210578422] [2022-01-18 04:13:06,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:13:06,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:06,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:06,811 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 04:13:06,823 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 04:13:06,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 04:13:06,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:06,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 04:13:06,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:06,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:06,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210578422] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:06,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:06,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 04:13:06,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650342846] [2022-01-18 04:13:06,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:06,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:13:06,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:06,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:13:06,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:13:06,967 INFO L87 Difference]: Start difference. First operand 2907 states and 10634 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 04:13:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:07,643 INFO L93 Difference]: Finished difference Result 5977 states and 19851 transitions. [2022-01-18 04:13:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 04:13:07,643 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 21 [2022-01-18 04:13:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:07,655 INFO L225 Difference]: With dead ends: 5977 [2022-01-18 04:13:07,655 INFO L226 Difference]: Without dead ends: 5951 [2022-01-18 04:13:07,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=609, Invalid=1647, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 04:13:07,655 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 253 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:07,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 199 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5951 states. [2022-01-18 04:13:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5951 to 2903. [2022-01-18 04:13:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 3.6574776016540316) internal successors, (10614), 2902 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 10614 transitions. [2022-01-18 04:13:07,730 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 10614 transitions. Word has length 21 [2022-01-18 04:13:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:07,730 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 10614 transitions. [2022-01-18 04:13:07,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 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 04:13:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 10614 transitions. [2022-01-18 04:13:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 04:13:07,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:07,735 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:07,750 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 04:13:07,935 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 04:13:07,935 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:07,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash 766836878, now seen corresponding path program 20 times [2022-01-18 04:13:07,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:07,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494305348] [2022-01-18 04:13:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:07,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:07,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494305348] [2022-01-18 04:13:07,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494305348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:07,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247062208] [2022-01-18 04:13:07,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:13:07,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:07,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:07,987 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 04:13:08,009 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 04:13:08,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:13:08,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:08,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 04:13:08,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:08,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:08,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247062208] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:08,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:08,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2022-01-18 04:13:08,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579260094] [2022-01-18 04:13:08,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:08,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:13:08,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:13:08,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:13:08,321 INFO L87 Difference]: Start difference. First operand 2903 states and 10614 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 04:13:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:08,451 INFO L93 Difference]: Finished difference Result 4177 states and 14782 transitions. [2022-01-18 04:13:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:13:08,452 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 23 [2022-01-18 04:13:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:08,460 INFO L225 Difference]: With dead ends: 4177 [2022-01-18 04:13:08,461 INFO L226 Difference]: Without dead ends: 4147 [2022-01-18 04:13:08,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:13:08,461 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 87 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:08,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 252 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:13:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2022-01-18 04:13:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 3663. [2022-01-18 04:13:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 3.671764063353359) internal successors, (13446), 3662 states have internal predecessors, (13446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 13446 transitions. [2022-01-18 04:13:08,521 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 13446 transitions. Word has length 23 [2022-01-18 04:13:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:08,521 INFO L470 AbstractCegarLoop]: Abstraction has 3663 states and 13446 transitions. [2022-01-18 04:13:08,521 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 04:13:08,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 13446 transitions. [2022-01-18 04:13:08,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 04:13:08,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:08,527 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:08,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:08,727 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 04:13:08,728 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:08,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash 728482628, now seen corresponding path program 21 times [2022-01-18 04:13:08,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:08,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039594859] [2022-01-18 04:13:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:08,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:08,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:08,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039594859] [2022-01-18 04:13:08,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039594859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:08,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507240132] [2022-01-18 04:13:08,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:13:08,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:08,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:08,792 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 04:13:08,793 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 04:13:08,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:13:08,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:08,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 04:13:08,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:09,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:13:09,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507240132] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:09,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:09,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2022-01-18 04:13:09,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062012206] [2022-01-18 04:13:09,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:09,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:13:09,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:09,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:13:09,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:13:09,112 INFO L87 Difference]: Start difference. First operand 3663 states and 13446 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 04:13:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:09,239 INFO L93 Difference]: Finished difference Result 4935 states and 17632 transitions. [2022-01-18 04:13:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:13:09,239 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 23 [2022-01-18 04:13:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:09,248 INFO L225 Difference]: With dead ends: 4935 [2022-01-18 04:13:09,248 INFO L226 Difference]: Without dead ends: 4886 [2022-01-18 04:13:09,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:13:09,249 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 80 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:09,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 301 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:13:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2022-01-18 04:13:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4276. [2022-01-18 04:13:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 3.705497076023392) internal successors, (15841), 4275 states have internal predecessors, (15841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 15841 transitions. [2022-01-18 04:13:09,352 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 15841 transitions. Word has length 23 [2022-01-18 04:13:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:09,352 INFO L470 AbstractCegarLoop]: Abstraction has 4276 states and 15841 transitions. [2022-01-18 04:13:09,352 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 04:13:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 15841 transitions. [2022-01-18 04:13:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 04:13:09,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:09,361 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 04:13:09,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-01-18 04:13:09,562 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 04:13:09,562 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1508260362, now seen corresponding path program 13 times [2022-01-18 04:13:09,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:09,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121151636] [2022-01-18 04:13:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:09,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:09,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121151636] [2022-01-18 04:13:09,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121151636] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133796654] [2022-01-18 04:13:09,640 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:13:09,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:09,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:09,641 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 04:13:09,670 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 04:13:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:09,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 04:13:09,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:09,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:13:09,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133796654] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:09,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:09,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 12 [2022-01-18 04:13:09,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753004113] [2022-01-18 04:13:09,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:09,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:13:09,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:09,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:13:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:13:09,925 INFO L87 Difference]: Start difference. First operand 4276 states and 15841 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:10,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:10,063 INFO L93 Difference]: Finished difference Result 5177 states and 18578 transitions. [2022-01-18 04:13:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:13:10,063 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 04:13:10,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:10,075 INFO L225 Difference]: With dead ends: 5177 [2022-01-18 04:13:10,075 INFO L226 Difference]: Without dead ends: 5147 [2022-01-18 04:13:10,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:10,075 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 109 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:10,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 192 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:13:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2022-01-18 04:13:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 4699. [2022-01-18 04:13:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 4698 states have (on average 3.691996594295445) internal successors, (17345), 4698 states have internal predecessors, (17345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 17345 transitions. [2022-01-18 04:13:10,164 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 17345 transitions. Word has length 23 [2022-01-18 04:13:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:10,164 INFO L470 AbstractCegarLoop]: Abstraction has 4699 states and 17345 transitions. [2022-01-18 04:13:10,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 17345 transitions. [2022-01-18 04:13:10,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:10,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:10,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:10,188 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 04:13:10,373 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 04:13:10,373 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:10,373 INFO L85 PathProgramCache]: Analyzing trace with hash -160336528, now seen corresponding path program 22 times [2022-01-18 04:13:10,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:10,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696628024] [2022-01-18 04:13:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:10,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:10,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:10,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696628024] [2022-01-18 04:13:10,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696628024] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:10,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433148293] [2022-01-18 04:13:10,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:13:10,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:10,417 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 04:13:10,417 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 04:13:10,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:13:10,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:10,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:13:10,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:10,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:10,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433148293] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:10,602 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:10,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 04:13:10,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701204397] [2022-01-18 04:13:10,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:10,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:10,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:10,603 INFO L87 Difference]: Start difference. First operand 4699 states and 17345 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 04:13:10,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:10,899 INFO L93 Difference]: Finished difference Result 8376 states and 29016 transitions. [2022-01-18 04:13:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 04:13:10,900 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 25 [2022-01-18 04:13:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:10,917 INFO L225 Difference]: With dead ends: 8376 [2022-01-18 04:13:10,917 INFO L226 Difference]: Without dead ends: 8376 [2022-01-18 04:13:10,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:13:10,918 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 238 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:10,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 151 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:13:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2022-01-18 04:13:11,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 5256. [2022-01-18 04:13:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 5255 states have (on average 3.7069457659372027) internal successors, (19480), 5255 states have internal predecessors, (19480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 19480 transitions. [2022-01-18 04:13:11,038 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 19480 transitions. Word has length 25 [2022-01-18 04:13:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:11,038 INFO L470 AbstractCegarLoop]: Abstraction has 5256 states and 19480 transitions. [2022-01-18 04:13:11,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 04:13:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 19480 transitions. [2022-01-18 04:13:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:11,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:11,046 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 04:13:11,063 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 04:13:11,247 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 04:13:11,247 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:11,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1841814858, now seen corresponding path program 14 times [2022-01-18 04:13:11,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:11,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803932555] [2022-01-18 04:13:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:11,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:11,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:11,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803932555] [2022-01-18 04:13:11,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803932555] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:11,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390866489] [2022-01-18 04:13:11,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:13:11,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:11,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:11,294 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 04:13:11,301 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 04:13:11,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:13:11,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:11,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:13:11,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:11,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:11,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390866489] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:11,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:11,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 04:13:11,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001939922] [2022-01-18 04:13:11,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:11,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:11,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:11,528 INFO L87 Difference]: Start difference. First operand 5256 states and 19480 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:13:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:12,374 INFO L93 Difference]: Finished difference Result 16483 states and 56277 transitions. [2022-01-18 04:13:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 04:13:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:13:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:12,419 INFO L225 Difference]: With dead ends: 16483 [2022-01-18 04:13:12,419 INFO L226 Difference]: Without dead ends: 16469 [2022-01-18 04:13:12,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=584, Invalid=2068, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 04:13:12,420 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 285 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:12,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 238 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16469 states. [2022-01-18 04:13:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16469 to 7242. [2022-01-18 04:13:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 3.7090180914238364) internal successors, (26857), 7241 states have internal predecessors, (26857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 26857 transitions. [2022-01-18 04:13:12,650 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 26857 transitions. Word has length 25 [2022-01-18 04:13:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:12,650 INFO L470 AbstractCegarLoop]: Abstraction has 7242 states and 26857 transitions. [2022-01-18 04:13:12,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:13:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 26857 transitions. [2022-01-18 04:13:12,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:12,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:12,663 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:12,678 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 04:13:12,863 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 04:13:12,863 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1366799892, now seen corresponding path program 23 times [2022-01-18 04:13:12,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:12,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565644691] [2022-01-18 04:13:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:12,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:12,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:12,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565644691] [2022-01-18 04:13:12,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565644691] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:12,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589451020] [2022-01-18 04:13:12,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:13:12,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:12,918 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 04:13:12,942 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 04:13:12,948 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:13:12,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:12,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:12,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:13,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:13,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589451020] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:13,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:13,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:13:13,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569595899] [2022-01-18 04:13:13,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:13,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:13:13,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:13,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:13:13,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:13:13,208 INFO L87 Difference]: Start difference. First operand 7242 states and 26857 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:14,449 INFO L93 Difference]: Finished difference Result 11227 states and 38311 transitions. [2022-01-18 04:13:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:13:14,449 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 25 [2022-01-18 04:13:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:14,472 INFO L225 Difference]: With dead ends: 11227 [2022-01-18 04:13:14,472 INFO L226 Difference]: Without dead ends: 11149 [2022-01-18 04:13:14,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1184, Invalid=3928, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 04:13:14,473 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 448 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:14,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 295 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:13:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11149 states. [2022-01-18 04:13:14,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11149 to 7430. [2022-01-18 04:13:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7430 states, 7429 states have (on average 3.7025171624713957) internal successors, (27506), 7429 states have internal predecessors, (27506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7430 states to 7430 states and 27506 transitions. [2022-01-18 04:13:14,632 INFO L78 Accepts]: Start accepts. Automaton has 7430 states and 27506 transitions. Word has length 25 [2022-01-18 04:13:14,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:14,632 INFO L470 AbstractCegarLoop]: Abstraction has 7430 states and 27506 transitions. [2022-01-18 04:13:14,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:14,632 INFO L276 IsEmpty]: Start isEmpty. Operand 7430 states and 27506 transitions. [2022-01-18 04:13:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:14,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:14,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:14,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:14,856 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 04:13:14,856 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:14,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1557416792, now seen corresponding path program 24 times [2022-01-18 04:13:14,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:14,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170184346] [2022-01-18 04:13:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:14,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:14,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:14,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170184346] [2022-01-18 04:13:14,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170184346] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:14,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506965218] [2022-01-18 04:13:14,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:13:14,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:14,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:14,901 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 04:13:14,935 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 04:13:14,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:13:14,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:14,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:14,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:15,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:15,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506965218] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:15,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:15,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:13:15,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999193305] [2022-01-18 04:13:15,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:15,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:13:15,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:13:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:13:15,203 INFO L87 Difference]: Start difference. First operand 7430 states and 27506 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 04:13:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:17,524 INFO L93 Difference]: Finished difference Result 13553 states and 44980 transitions. [2022-01-18 04:13:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 04:13:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 25 [2022-01-18 04:13:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:17,557 INFO L225 Difference]: With dead ends: 13553 [2022-01-18 04:13:17,557 INFO L226 Difference]: Without dead ends: 13553 [2022-01-18 04:13:17,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5966 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3518, Invalid=11244, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 04:13:17,559 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 631 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:17,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 302 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:13:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13553 states. [2022-01-18 04:13:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13553 to 7458. [2022-01-18 04:13:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 7457 states have (on average 3.7017567386348396) internal successors, (27604), 7457 states have internal predecessors, (27604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 27604 transitions. [2022-01-18 04:13:17,755 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 27604 transitions. Word has length 25 [2022-01-18 04:13:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:17,755 INFO L470 AbstractCegarLoop]: Abstraction has 7458 states and 27604 transitions. [2022-01-18 04:13:17,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 04:13:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 27604 transitions. [2022-01-18 04:13:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:17,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:17,772 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 04:13:17,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:17,994 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 04:13:17,994 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:17,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:17,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1325882792, now seen corresponding path program 15 times [2022-01-18 04:13:17,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:17,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472424556] [2022-01-18 04:13:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:17,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:18,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:18,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472424556] [2022-01-18 04:13:18,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472424556] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:18,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634303084] [2022-01-18 04:13:18,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:13:18,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:18,041 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 04:13:18,068 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 04:13:18,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:13:18,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:18,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:13:18,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:18,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:18,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634303084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:18,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:18,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 04:13:18,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934986941] [2022-01-18 04:13:18,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:18,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:18,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:18,301 INFO L87 Difference]: Start difference. First operand 7458 states and 27604 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:13:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:19,736 INFO L93 Difference]: Finished difference Result 18954 states and 64865 transitions. [2022-01-18 04:13:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 04:13:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 25 [2022-01-18 04:13:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:19,785 INFO L225 Difference]: With dead ends: 18954 [2022-01-18 04:13:19,785 INFO L226 Difference]: Without dead ends: 18932 [2022-01-18 04:13:19,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1214, Invalid=4638, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 04:13:19,786 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 398 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:19,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 344 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:13:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18932 states. [2022-01-18 04:13:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18932 to 8787. [2022-01-18 04:13:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8787 states, 8786 states have (on average 3.766332802185295) internal successors, (33091), 8786 states have internal predecessors, (33091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8787 states to 8787 states and 33091 transitions. [2022-01-18 04:13:20,128 INFO L78 Accepts]: Start accepts. Automaton has 8787 states and 33091 transitions. Word has length 25 [2022-01-18 04:13:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:20,128 INFO L470 AbstractCegarLoop]: Abstraction has 8787 states and 33091 transitions. [2022-01-18 04:13:20,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:13:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 8787 states and 33091 transitions. [2022-01-18 04:13:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:20,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:20,143 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 04:13:20,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:20,343 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 04:13:20,344 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1990527060, now seen corresponding path program 16 times [2022-01-18 04:13:20,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:20,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570677794] [2022-01-18 04:13:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:20,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:20,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:20,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570677794] [2022-01-18 04:13:20,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570677794] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:20,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882458291] [2022-01-18 04:13:20,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:13:20,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:20,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:20,388 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 04:13:20,395 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 04:13:20,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:13:20,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:20,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:13:20,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:20,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:20,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882458291] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:20,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:20,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 04:13:20,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427800055] [2022-01-18 04:13:20,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:20,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:20,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:20,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:20,638 INFO L87 Difference]: Start difference. First operand 8787 states and 33091 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:13:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:22,051 INFO L93 Difference]: Finished difference Result 21846 states and 74430 transitions. [2022-01-18 04:13:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 04:13:22,052 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:13:22,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:22,107 INFO L225 Difference]: With dead ends: 21846 [2022-01-18 04:13:22,107 INFO L226 Difference]: Without dead ends: 21804 [2022-01-18 04:13:22,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=954, Invalid=3206, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 04:13:22,108 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 353 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:22,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 459 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:13:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21804 states. [2022-01-18 04:13:22,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21804 to 7140. [2022-01-18 04:13:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7140 states, 7139 states have (on average 3.7089228183218936) internal successors, (26478), 7139 states have internal predecessors, (26478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7140 states to 7140 states and 26478 transitions. [2022-01-18 04:13:22,444 INFO L78 Accepts]: Start accepts. Automaton has 7140 states and 26478 transitions. Word has length 25 [2022-01-18 04:13:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:22,444 INFO L470 AbstractCegarLoop]: Abstraction has 7140 states and 26478 transitions. [2022-01-18 04:13:22,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:13:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7140 states and 26478 transitions. [2022-01-18 04:13:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:22,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:22,461 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:22,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 04:13:22,682 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 04:13:22,683 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:22,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1684292440, now seen corresponding path program 25 times [2022-01-18 04:13:22,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:22,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175142350] [2022-01-18 04:13:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:22,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:22,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:22,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175142350] [2022-01-18 04:13:22,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175142350] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:22,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467389823] [2022-01-18 04:13:22,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:13:22,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:22,733 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 04:13:22,734 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 04:13:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:22,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:22,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:23,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:23,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467389823] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:23,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:23,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:13:23,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357957277] [2022-01-18 04:13:23,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:23,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:13:23,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:13:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:13:23,068 INFO L87 Difference]: Start difference. First operand 7140 states and 26478 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:24,538 INFO L93 Difference]: Finished difference Result 11568 states and 38925 transitions. [2022-01-18 04:13:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 04:13:24,538 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 25 [2022-01-18 04:13:24,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:24,564 INFO L225 Difference]: With dead ends: 11568 [2022-01-18 04:13:24,564 INFO L226 Difference]: Without dead ends: 11533 [2022-01-18 04:13:24,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2366 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1690, Invalid=5116, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 04:13:24,566 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 542 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:24,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 289 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2022-01-18 04:13:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 7088. [2022-01-18 04:13:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7088 states, 7087 states have (on average 3.709891350359814) internal successors, (26292), 7087 states have internal predecessors, (26292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 26292 transitions. [2022-01-18 04:13:24,748 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 26292 transitions. Word has length 25 [2022-01-18 04:13:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:24,748 INFO L470 AbstractCegarLoop]: Abstraction has 7088 states and 26292 transitions. [2022-01-18 04:13:24,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 26292 transitions. [2022-01-18 04:13:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:24,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:24,761 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:24,777 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 04:13:24,962 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 04:13:24,962 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:24,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash 774400428, now seen corresponding path program 26 times [2022-01-18 04:13:24,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:24,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184392322] [2022-01-18 04:13:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:24,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:25,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:25,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184392322] [2022-01-18 04:13:25,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184392322] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:25,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372339069] [2022-01-18 04:13:25,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:13:25,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:25,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:25,016 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 04:13:25,017 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 04:13:25,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:13:25,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:25,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:25,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:25,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:25,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372339069] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:25,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:25,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:13:25,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331804858] [2022-01-18 04:13:25,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:25,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:13:25,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:25,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:13:25,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:13:25,288 INFO L87 Difference]: Start difference. First operand 7088 states and 26292 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:26,733 INFO L93 Difference]: Finished difference Result 11527 states and 38863 transitions. [2022-01-18 04:13:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 04:13:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 25 [2022-01-18 04:13:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:26,757 INFO L225 Difference]: With dead ends: 11527 [2022-01-18 04:13:26,757 INFO L226 Difference]: Without dead ends: 11443 [2022-01-18 04:13:26,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1490, Invalid=4830, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 04:13:26,758 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 480 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:26,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 278 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2022-01-18 04:13:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 7218. [2022-01-18 04:13:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7218 states, 7217 states have (on average 3.6953027573784123) internal successors, (26669), 7217 states have internal predecessors, (26669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7218 states to 7218 states and 26669 transitions. [2022-01-18 04:13:26,915 INFO L78 Accepts]: Start accepts. Automaton has 7218 states and 26669 transitions. Word has length 25 [2022-01-18 04:13:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:26,916 INFO L470 AbstractCegarLoop]: Abstraction has 7218 states and 26669 transitions. [2022-01-18 04:13:26,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7218 states and 26669 transitions. [2022-01-18 04:13:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:26,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:26,928 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:26,944 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 04:13:27,129 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 04:13:27,129 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:27,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1196321260, now seen corresponding path program 27 times [2022-01-18 04:13:27,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:27,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628050556] [2022-01-18 04:13:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:27,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:27,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:27,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628050556] [2022-01-18 04:13:27,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628050556] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:27,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188391447] [2022-01-18 04:13:27,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:13:27,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:27,187 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 04:13:27,188 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 04:13:27,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:13:27,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:27,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:27,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:27,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:27,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188391447] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:27,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:27,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:13:27,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366263974] [2022-01-18 04:13:27,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:27,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:13:27,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:27,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:13:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:13:27,448 INFO L87 Difference]: Start difference. First operand 7218 states and 26669 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:28,745 INFO L93 Difference]: Finished difference Result 11296 states and 38475 transitions. [2022-01-18 04:13:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:13:28,745 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 25 [2022-01-18 04:13:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:28,772 INFO L225 Difference]: With dead ends: 11296 [2022-01-18 04:13:28,772 INFO L226 Difference]: Without dead ends: 11218 [2022-01-18 04:13:28,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1184, Invalid=3928, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 04:13:28,773 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 501 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:28,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 244 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11218 states. [2022-01-18 04:13:28,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11218 to 7595. [2022-01-18 04:13:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7595 states, 7594 states have (on average 3.6906768501448513) internal successors, (28027), 7594 states have internal predecessors, (28027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7595 states to 7595 states and 28027 transitions. [2022-01-18 04:13:28,978 INFO L78 Accepts]: Start accepts. Automaton has 7595 states and 28027 transitions. Word has length 25 [2022-01-18 04:13:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:28,978 INFO L470 AbstractCegarLoop]: Abstraction has 7595 states and 28027 transitions. [2022-01-18 04:13:28,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7595 states and 28027 transitions. [2022-01-18 04:13:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:28,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:28,991 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:29,007 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 04:13:29,192 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 04:13:29,192 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash 609334184, now seen corresponding path program 28 times [2022-01-18 04:13:29,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:29,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832534390] [2022-01-18 04:13:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:29,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:29,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:29,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832534390] [2022-01-18 04:13:29,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832534390] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:29,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493483204] [2022-01-18 04:13:29,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:13:29,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:29,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:29,237 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 04:13:29,237 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 04:13:29,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:13:29,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:29,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:29,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:29,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:29,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493483204] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:29,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:29,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:13:29,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811912864] [2022-01-18 04:13:29,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:29,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:13:29,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:13:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:13:29,483 INFO L87 Difference]: Start difference. First operand 7595 states and 28027 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:31,150 INFO L93 Difference]: Finished difference Result 12317 states and 41373 transitions. [2022-01-18 04:13:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 04:13:31,150 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 25 [2022-01-18 04:13:31,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:31,176 INFO L225 Difference]: With dead ends: 12317 [2022-01-18 04:13:31,176 INFO L226 Difference]: Without dead ends: 12212 [2022-01-18 04:13:31,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1776, Invalid=5880, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 04:13:31,177 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 570 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:31,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 276 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:13:31,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2022-01-18 04:13:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 7949. [2022-01-18 04:13:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7949 states, 7948 states have (on average 3.665450427780574) internal successors, (29133), 7948 states have internal predecessors, (29133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7949 states to 7949 states and 29133 transitions. [2022-01-18 04:13:31,358 INFO L78 Accepts]: Start accepts. Automaton has 7949 states and 29133 transitions. Word has length 25 [2022-01-18 04:13:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:31,359 INFO L470 AbstractCegarLoop]: Abstraction has 7949 states and 29133 transitions. [2022-01-18 04:13:31,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 7949 states and 29133 transitions. [2022-01-18 04:13:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:31,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:31,372 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:31,387 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 04:13:31,572 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 04:13:31,572 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1801800616, now seen corresponding path program 29 times [2022-01-18 04:13:31,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:31,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047696235] [2022-01-18 04:13:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:31,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:31,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:31,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047696235] [2022-01-18 04:13:31,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047696235] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:31,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480247807] [2022-01-18 04:13:31,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:13:31,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:31,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:31,623 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 04:13:31,624 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 04:13:31,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:13:31,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:31,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:31,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:31,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:31,894 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:31,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480247807] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:31,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:31,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:13:31,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383843903] [2022-01-18 04:13:31,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:31,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:13:31,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:31,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:13:31,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:13:31,895 INFO L87 Difference]: Start difference. First operand 7949 states and 29133 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:33,590 INFO L93 Difference]: Finished difference Result 12441 states and 41823 transitions. [2022-01-18 04:13:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 04:13:33,591 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 25 [2022-01-18 04:13:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:33,618 INFO L225 Difference]: With dead ends: 12441 [2022-01-18 04:13:33,618 INFO L226 Difference]: Without dead ends: 12392 [2022-01-18 04:13:33,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3281 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2096, Invalid=6460, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 04:13:33,619 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 615 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:33,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 277 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12392 states. [2022-01-18 04:13:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12392 to 8090. [2022-01-18 04:13:33,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 8089 states have (on average 3.658795895660774) internal successors, (29596), 8089 states have internal predecessors, (29596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 29596 transitions. [2022-01-18 04:13:33,841 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 29596 transitions. Word has length 25 [2022-01-18 04:13:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:33,841 INFO L470 AbstractCegarLoop]: Abstraction has 8090 states and 29596 transitions. [2022-01-18 04:13:33,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:13:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 29596 transitions. [2022-01-18 04:13:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:33,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:33,855 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:33,870 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 04:13:34,055 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 04:13:34,055 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1388571988, now seen corresponding path program 30 times [2022-01-18 04:13:34,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:34,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384162740] [2022-01-18 04:13:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:34,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:34,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:34,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384162740] [2022-01-18 04:13:34,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384162740] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:34,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120692271] [2022-01-18 04:13:34,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:13:34,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:34,107 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 04:13:34,108 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 04:13:34,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:13:34,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:34,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:34,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:34,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:34,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120692271] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:34,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:34,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:13:34,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647586102] [2022-01-18 04:13:34,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:13:34,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:13:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:13:34,373 INFO L87 Difference]: Start difference. First operand 8090 states and 29596 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 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 04:13:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:36,396 INFO L93 Difference]: Finished difference Result 12974 states and 43200 transitions. [2022-01-18 04:13:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 04:13:36,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 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 25 [2022-01-18 04:13:36,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:36,427 INFO L225 Difference]: With dead ends: 12974 [2022-01-18 04:13:36,427 INFO L226 Difference]: Without dead ends: 12962 [2022-01-18 04:13:36,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5226 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3102, Invalid=9330, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 04:13:36,429 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 627 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:36,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 355 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:13:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2022-01-18 04:13:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 7898. [2022-01-18 04:13:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7898 states, 7897 states have (on average 3.6521463847030518) internal successors, (28841), 7897 states have internal predecessors, (28841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7898 states to 7898 states and 28841 transitions. [2022-01-18 04:13:36,676 INFO L78 Accepts]: Start accepts. Automaton has 7898 states and 28841 transitions. Word has length 25 [2022-01-18 04:13:36,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:36,677 INFO L470 AbstractCegarLoop]: Abstraction has 7898 states and 28841 transitions. [2022-01-18 04:13:36,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 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 04:13:36,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states and 28841 transitions. [2022-01-18 04:13:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:36,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:36,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:36,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 04:13:36,892 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 04:13:36,892 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1214287472, now seen corresponding path program 31 times [2022-01-18 04:13:36,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:36,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917136336] [2022-01-18 04:13:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:36,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:36,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:36,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917136336] [2022-01-18 04:13:36,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917136336] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:36,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544525898] [2022-01-18 04:13:36,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:13:36,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:36,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:36,934 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 04:13:36,958 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 04:13:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:36,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:13:36,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:37,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:37,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544525898] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:37,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:37,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-18 04:13:37,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135010538] [2022-01-18 04:13:37,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:37,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:13:37,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:37,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:13:37,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:13:37,094 INFO L87 Difference]: Start difference. First operand 7898 states and 28841 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:37,300 INFO L93 Difference]: Finished difference Result 10133 states and 35170 transitions. [2022-01-18 04:13:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 04:13:37,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:13:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:37,320 INFO L225 Difference]: With dead ends: 10133 [2022-01-18 04:13:37,320 INFO L226 Difference]: Without dead ends: 10125 [2022-01-18 04:13:37,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-18 04:13:37,320 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 129 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:37,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 96 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:13:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10125 states. [2022-01-18 04:13:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10125 to 7507. [2022-01-18 04:13:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7507 states, 7506 states have (on average 3.642685851318945) internal successors, (27342), 7506 states have internal predecessors, (27342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 27342 transitions. [2022-01-18 04:13:37,461 INFO L78 Accepts]: Start accepts. Automaton has 7507 states and 27342 transitions. Word has length 25 [2022-01-18 04:13:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:37,461 INFO L470 AbstractCegarLoop]: Abstraction has 7507 states and 27342 transitions. [2022-01-18 04:13:37,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 7507 states and 27342 transitions. [2022-01-18 04:13:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:37,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:37,475 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:37,490 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 04:13:37,679 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 04:13:37,679 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:37,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1146236264, now seen corresponding path program 32 times [2022-01-18 04:13:37,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:37,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931889990] [2022-01-18 04:13:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:37,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:37,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:37,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931889990] [2022-01-18 04:13:37,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931889990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:37,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140246739] [2022-01-18 04:13:37,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:13:37,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:37,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:37,722 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 04:13:37,723 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 04:13:37,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:13:37,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:37,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:37,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:37,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:37,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140246739] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:37,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:37,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 04:13:37,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487488206] [2022-01-18 04:13:37,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:37,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:13:37,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:37,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:13:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:13:37,947 INFO L87 Difference]: Start difference. First operand 7507 states and 27342 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 04:13:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:39,883 INFO L93 Difference]: Finished difference Result 16117 states and 55172 transitions. [2022-01-18 04:13:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 04:13:39,884 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 25 [2022-01-18 04:13:39,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:39,923 INFO L225 Difference]: With dead ends: 16117 [2022-01-18 04:13:39,923 INFO L226 Difference]: Without dead ends: 16117 [2022-01-18 04:13:39,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2608, Invalid=8104, Unknown=0, NotChecked=0, Total=10712 [2022-01-18 04:13:39,924 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 526 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:39,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 277 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:13:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16117 states. [2022-01-18 04:13:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16117 to 8358. [2022-01-18 04:13:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8358 states, 8357 states have (on average 3.7146105061624985) internal successors, (31043), 8357 states have internal predecessors, (31043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8358 states to 8358 states and 31043 transitions. [2022-01-18 04:13:40,182 INFO L78 Accepts]: Start accepts. Automaton has 8358 states and 31043 transitions. Word has length 25 [2022-01-18 04:13:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:40,182 INFO L470 AbstractCegarLoop]: Abstraction has 8358 states and 31043 transitions. [2022-01-18 04:13:40,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 04:13:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 8358 states and 31043 transitions. [2022-01-18 04:13:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:40,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:40,196 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:40,211 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 04:13:40,396 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 04:13:40,397 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2112049308, now seen corresponding path program 33 times [2022-01-18 04:13:40,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:40,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497210587] [2022-01-18 04:13:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:40,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:40,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:40,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497210587] [2022-01-18 04:13:40,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497210587] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:40,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68852639] [2022-01-18 04:13:40,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:13:40,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:40,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:40,441 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 04:13:40,468 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 04:13:40,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 04:13:40,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:40,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:40,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:40,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:40,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68852639] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:40,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:40,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 04:13:40,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930705773] [2022-01-18 04:13:40,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:40,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:13:40,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:13:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:13:40,738 INFO L87 Difference]: Start difference. First operand 8358 states and 31043 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:42,265 INFO L93 Difference]: Finished difference Result 15503 states and 53080 transitions. [2022-01-18 04:13:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 04:13:42,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have 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 04:13:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:42,299 INFO L225 Difference]: With dead ends: 15503 [2022-01-18 04:13:42,299 INFO L226 Difference]: Without dead ends: 15491 [2022-01-18 04:13:42,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1859, Invalid=5113, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 04:13:42,300 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 534 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:42,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 267 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:13:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15491 states. [2022-01-18 04:13:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15491 to 8184. [2022-01-18 04:13:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8184 states, 8183 states have (on average 3.682756935109373) internal successors, (30136), 8183 states have internal predecessors, (30136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 30136 transitions. [2022-01-18 04:13:42,510 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 30136 transitions. Word has length 25 [2022-01-18 04:13:42,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:42,510 INFO L470 AbstractCegarLoop]: Abstraction has 8184 states and 30136 transitions. [2022-01-18 04:13:42,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 30136 transitions. [2022-01-18 04:13:42,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:42,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:42,523 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:42,538 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 04:13:42,723 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 04:13:42,723 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1678098526, now seen corresponding path program 34 times [2022-01-18 04:13:42,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:42,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79562752] [2022-01-18 04:13:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:42,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:42,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:42,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79562752] [2022-01-18 04:13:42,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79562752] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:42,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846642792] [2022-01-18 04:13:42,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:13:42,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:42,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:42,763 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 04:13:42,793 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 04:13:42,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:13:42,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:42,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:13:42,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:42,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:42,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846642792] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:42,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:42,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 04:13:42,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806155622] [2022-01-18 04:13:42,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:42,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:13:42,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:13:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:13:42,946 INFO L87 Difference]: Start difference. First operand 8184 states and 30136 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 04:13:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:43,325 INFO L93 Difference]: Finished difference Result 19877 states and 69697 transitions. [2022-01-18 04:13:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 04:13:43,326 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 25 [2022-01-18 04:13:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:43,371 INFO L225 Difference]: With dead ends: 19877 [2022-01-18 04:13:43,371 INFO L226 Difference]: Without dead ends: 19877 [2022-01-18 04:13:43,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2022-01-18 04:13:43,372 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 204 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:43,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 133 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:13:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19877 states. [2022-01-18 04:13:43,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19877 to 12617. [2022-01-18 04:13:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12617 states, 12616 states have (on average 3.797717184527584) internal successors, (47912), 12616 states have internal predecessors, (47912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12617 states to 12617 states and 47912 transitions. [2022-01-18 04:13:43,679 INFO L78 Accepts]: Start accepts. Automaton has 12617 states and 47912 transitions. Word has length 25 [2022-01-18 04:13:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:43,679 INFO L470 AbstractCegarLoop]: Abstraction has 12617 states and 47912 transitions. [2022-01-18 04:13:43,679 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 04:13:43,679 INFO L276 IsEmpty]: Start isEmpty. Operand 12617 states and 47912 transitions. [2022-01-18 04:13:43,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:43,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:43,703 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:43,718 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 04:13:43,903 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 04:13:43,903 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash -158041622, now seen corresponding path program 35 times [2022-01-18 04:13:43,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:43,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562756475] [2022-01-18 04:13:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:43,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:43,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:43,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562756475] [2022-01-18 04:13:43,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562756475] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:43,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120257714] [2022-01-18 04:13:43,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:13:43,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:43,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:43,936 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 04:13:43,937 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 04:13:43,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:13:43,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:43,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:13:43,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:44,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:44,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120257714] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:44,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:44,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-18 04:13:44,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624087341] [2022-01-18 04:13:44,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:44,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:13:44,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:13:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:13:44,068 INFO L87 Difference]: Start difference. First operand 12617 states and 47912 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:44,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:44,320 INFO L93 Difference]: Finished difference Result 16989 states and 60544 transitions. [2022-01-18 04:13:44,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 04:13:44,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:13:44,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:44,364 INFO L225 Difference]: With dead ends: 16989 [2022-01-18 04:13:44,364 INFO L226 Difference]: Without dead ends: 16975 [2022-01-18 04:13:44,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:13:44,365 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 240 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:44,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 77 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:13:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16975 states. [2022-01-18 04:13:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16975 to 11442. [2022-01-18 04:13:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11442 states, 11441 states have (on average 3.776942574949742) internal successors, (43212), 11441 states have internal predecessors, (43212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11442 states to 11442 states and 43212 transitions. [2022-01-18 04:13:44,622 INFO L78 Accepts]: Start accepts. Automaton has 11442 states and 43212 transitions. Word has length 25 [2022-01-18 04:13:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:44,622 INFO L470 AbstractCegarLoop]: Abstraction has 11442 states and 43212 transitions. [2022-01-18 04:13:44,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 11442 states and 43212 transitions. [2022-01-18 04:13:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:44,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:44,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:44,656 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 04:13:44,841 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 04:13:44,841 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:44,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1325093316, now seen corresponding path program 36 times [2022-01-18 04:13:44,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:44,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441251303] [2022-01-18 04:13:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:44,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:44,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:44,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441251303] [2022-01-18 04:13:44,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441251303] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:44,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866247689] [2022-01-18 04:13:44,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:13:44,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:44,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:44,881 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 04:13:44,906 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 04:13:44,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 04:13:44,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:44,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:13:44,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:44,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:45,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866247689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:45,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:45,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-01-18 04:13:45,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990234516] [2022-01-18 04:13:45,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:45,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:13:45,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:45,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:13:45,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:13:45,032 INFO L87 Difference]: Start difference. First operand 11442 states and 43212 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:45,376 INFO L93 Difference]: Finished difference Result 15660 states and 55413 transitions. [2022-01-18 04:13:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 04:13:45,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:13:45,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:45,411 INFO L225 Difference]: With dead ends: 15660 [2022-01-18 04:13:45,411 INFO L226 Difference]: Without dead ends: 15638 [2022-01-18 04:13:45,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=298, Unknown=0, NotChecked=0, Total=462 [2022-01-18 04:13:45,412 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 282 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:45,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 86 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:13:45,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15638 states. [2022-01-18 04:13:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15638 to 11012. [2022-01-18 04:13:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11012 states, 11011 states have (on average 3.757606030333303) internal successors, (41375), 11011 states have internal predecessors, (41375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11012 states to 11012 states and 41375 transitions. [2022-01-18 04:13:45,643 INFO L78 Accepts]: Start accepts. Automaton has 11012 states and 41375 transitions. Word has length 25 [2022-01-18 04:13:45,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:45,643 INFO L470 AbstractCegarLoop]: Abstraction has 11012 states and 41375 transitions. [2022-01-18 04:13:45,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 11012 states and 41375 transitions. [2022-01-18 04:13:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:45,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:45,662 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:45,678 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 04:13:45,863 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 04:13:45,863 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash 347211234, now seen corresponding path program 37 times [2022-01-18 04:13:45,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:45,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718287213] [2022-01-18 04:13:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:45,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:45,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:45,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718287213] [2022-01-18 04:13:45,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718287213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:45,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496205440] [2022-01-18 04:13:45,909 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:13:45,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:45,910 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 04:13:45,938 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 04:13:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:45,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:45,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:46,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:46,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496205440] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:46,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:46,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 04:13:46,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569221923] [2022-01-18 04:13:46,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:46,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:46,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:46,207 INFO L87 Difference]: Start difference. First operand 11012 states and 41375 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 04:13:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:47,912 INFO L93 Difference]: Finished difference Result 15192 states and 53704 transitions. [2022-01-18 04:13:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 04:13:47,913 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 25 [2022-01-18 04:13:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:47,948 INFO L225 Difference]: With dead ends: 15192 [2022-01-18 04:13:47,948 INFO L226 Difference]: Without dead ends: 15192 [2022-01-18 04:13:47,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3636 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2098, Invalid=7802, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 04:13:47,950 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 373 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:47,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 236 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:13:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15192 states. [2022-01-18 04:13:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15192 to 11138. [2022-01-18 04:13:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11138 states, 11137 states have (on average 3.764658346053695) internal successors, (41927), 11137 states have internal predecessors, (41927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11138 states to 11138 states and 41927 transitions. [2022-01-18 04:13:48,188 INFO L78 Accepts]: Start accepts. Automaton has 11138 states and 41927 transitions. Word has length 25 [2022-01-18 04:13:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:48,188 INFO L470 AbstractCegarLoop]: Abstraction has 11138 states and 41927 transitions. [2022-01-18 04:13:48,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 04:13:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 11138 states and 41927 transitions. [2022-01-18 04:13:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:48,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:48,249 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:48,265 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 04:13:48,450 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 04:13:48,450 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 220335586, now seen corresponding path program 38 times [2022-01-18 04:13:48,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:48,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578914798] [2022-01-18 04:13:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:48,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:48,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:48,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578914798] [2022-01-18 04:13:48,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578914798] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:48,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144467635] [2022-01-18 04:13:48,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:13:48,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:48,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:48,495 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 04:13:48,495 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 04:13:48,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:13:48,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:48,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:48,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:48,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:13:48,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144467635] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:48,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:48,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 04:13:48,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011141932] [2022-01-18 04:13:48,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:48,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:48,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:48,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:48,735 INFO L87 Difference]: Start difference. First operand 11138 states and 41927 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:13:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:49,758 INFO L93 Difference]: Finished difference Result 13833 states and 49529 transitions. [2022-01-18 04:13:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 04:13:49,759 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 25 [2022-01-18 04:13:49,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:49,791 INFO L225 Difference]: With dead ends: 13833 [2022-01-18 04:13:49,792 INFO L226 Difference]: Without dead ends: 13812 [2022-01-18 04:13:49,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=858, Invalid=2802, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 04:13:49,792 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 399 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:49,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 233 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13812 states. [2022-01-18 04:13:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13812 to 11138. [2022-01-18 04:13:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11138 states, 11137 states have (on average 3.7639400197539734) internal successors, (41919), 11137 states have internal predecessors, (41919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11138 states to 11138 states and 41919 transitions. [2022-01-18 04:13:50,020 INFO L78 Accepts]: Start accepts. Automaton has 11138 states and 41919 transitions. Word has length 25 [2022-01-18 04:13:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:50,020 INFO L470 AbstractCegarLoop]: Abstraction has 11138 states and 41919 transitions. [2022-01-18 04:13:50,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:13:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 11138 states and 41919 transitions. [2022-01-18 04:13:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:50,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:50,038 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:50,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 04:13:50,239 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 04:13:50,239 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:50,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:50,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1493691874, now seen corresponding path program 39 times [2022-01-18 04:13:50,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:50,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163580849] [2022-01-18 04:13:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:50,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:50,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:50,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163580849] [2022-01-18 04:13:50,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163580849] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:50,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173135526] [2022-01-18 04:13:50,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:13:50,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:50,285 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 04:13:50,309 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 04:13:50,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:13:50,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:50,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:50,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:50,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:50,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173135526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:50,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:50,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 04:13:50,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032609426] [2022-01-18 04:13:50,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:50,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:50,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:50,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:50,531 INFO L87 Difference]: Start difference. First operand 11138 states and 41919 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:13:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:51,618 INFO L93 Difference]: Finished difference Result 14424 states and 51191 transitions. [2022-01-18 04:13:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 04:13:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 25 [2022-01-18 04:13:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:51,654 INFO L225 Difference]: With dead ends: 14424 [2022-01-18 04:13:51,654 INFO L226 Difference]: Without dead ends: 14396 [2022-01-18 04:13:51,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=887, Invalid=2895, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 04:13:51,655 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 386 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:51,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 233 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:51,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14396 states. [2022-01-18 04:13:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14396 to 11195. [2022-01-18 04:13:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11195 states, 11194 states have (on average 3.7634447025192066) internal successors, (42128), 11194 states have internal predecessors, (42128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11195 states to 11195 states and 42128 transitions. [2022-01-18 04:13:51,980 INFO L78 Accepts]: Start accepts. Automaton has 11195 states and 42128 transitions. Word has length 25 [2022-01-18 04:13:51,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:51,980 INFO L470 AbstractCegarLoop]: Abstraction has 11195 states and 42128 transitions. [2022-01-18 04:13:51,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:13:51,980 INFO L276 IsEmpty]: Start isEmpty. Operand 11195 states and 42128 transitions. [2022-01-18 04:13:52,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:52,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:52,001 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:52,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-01-18 04:13:52,201 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 04:13:52,201 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1696680730, now seen corresponding path program 40 times [2022-01-18 04:13:52,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:52,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235556949] [2022-01-18 04:13:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:52,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:52,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:52,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235556949] [2022-01-18 04:13:52,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235556949] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:52,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366100866] [2022-01-18 04:13:52,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:13:52,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:52,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:52,242 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 04:13:52,242 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 04:13:52,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:13:52,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:52,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:52,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:52,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:52,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366100866] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:52,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:52,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 04:13:52,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026836188] [2022-01-18 04:13:52,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:52,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:52,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:52,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:52,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:52,480 INFO L87 Difference]: Start difference. First operand 11195 states and 42128 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:13:53,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:53,918 INFO L93 Difference]: Finished difference Result 14912 states and 52543 transitions. [2022-01-18 04:13:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 04:13:53,919 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:13:53,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:53,956 INFO L225 Difference]: With dead ends: 14912 [2022-01-18 04:13:53,956 INFO L226 Difference]: Without dead ends: 14900 [2022-01-18 04:13:53,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1308, Invalid=4392, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 04:13:53,957 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 349 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:53,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 331 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:13:53,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14900 states. [2022-01-18 04:13:54,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14900 to 11138. [2022-01-18 04:13:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11138 states, 11137 states have (on average 3.7660949986531382) internal successors, (41943), 11137 states have internal predecessors, (41943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11138 states to 11138 states and 41943 transitions. [2022-01-18 04:13:54,192 INFO L78 Accepts]: Start accepts. Automaton has 11138 states and 41943 transitions. Word has length 25 [2022-01-18 04:13:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:54,192 INFO L470 AbstractCegarLoop]: Abstraction has 11138 states and 41943 transitions. [2022-01-18 04:13:54,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:13:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 11138 states and 41943 transitions. [2022-01-18 04:13:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:54,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:54,211 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:54,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-01-18 04:13:54,411 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 04:13:54,412 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1229977822, now seen corresponding path program 41 times [2022-01-18 04:13:54,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:54,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75902900] [2022-01-18 04:13:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:54,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:54,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:54,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75902900] [2022-01-18 04:13:54,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75902900] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:54,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055541202] [2022-01-18 04:13:54,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:13:54,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:54,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:54,464 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 04:13:54,490 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 04:13:54,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:13:54,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:54,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:54,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:54,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:54,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055541202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:54,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:54,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-01-18 04:13:54,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647228620] [2022-01-18 04:13:54,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:54,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:13:54,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:13:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:13:54,772 INFO L87 Difference]: Start difference. First operand 11138 states and 41943 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:13:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:55,703 INFO L93 Difference]: Finished difference Result 14340 states and 51496 transitions. [2022-01-18 04:13:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 04:13:55,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 25 [2022-01-18 04:13:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:55,755 INFO L225 Difference]: With dead ends: 14340 [2022-01-18 04:13:55,755 INFO L226 Difference]: Without dead ends: 14277 [2022-01-18 04:13:55,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=683, Invalid=2397, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 04:13:55,756 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 420 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:55,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 203 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14277 states. [2022-01-18 04:13:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 11984. [2022-01-18 04:13:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11984 states, 11983 states have (on average 3.751397813569223) internal successors, (44953), 11983 states have internal predecessors, (44953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11984 states to 11984 states and 44953 transitions. [2022-01-18 04:13:56,115 INFO L78 Accepts]: Start accepts. Automaton has 11984 states and 44953 transitions. Word has length 25 [2022-01-18 04:13:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:56,115 INFO L470 AbstractCegarLoop]: Abstraction has 11984 states and 44953 transitions. [2022-01-18 04:13:56,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:13:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 11984 states and 44953 transitions. [2022-01-18 04:13:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:56,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:56,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:56,151 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 04:13:56,336 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 04:13:56,336 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:56,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:56,337 INFO L85 PathProgramCache]: Analyzing trace with hash 73924450, now seen corresponding path program 42 times [2022-01-18 04:13:56,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:56,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286802138] [2022-01-18 04:13:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:56,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:56,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:56,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286802138] [2022-01-18 04:13:56,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286802138] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:56,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367221126] [2022-01-18 04:13:56,384 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:13:56,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:56,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:56,385 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 04:13:56,386 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 04:13:56,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:13:56,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:13:56,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:56,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:56,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:56,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367221126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:56,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:56,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 04:13:56,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752583631] [2022-01-18 04:13:56,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:56,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:56,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:56,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:56,640 INFO L87 Difference]: Start difference. First operand 11984 states and 44953 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:13:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:57,533 INFO L93 Difference]: Finished difference Result 15051 states and 53533 transitions. [2022-01-18 04:13:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 04:13:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 25 [2022-01-18 04:13:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:57,577 INFO L225 Difference]: With dead ends: 15051 [2022-01-18 04:13:57,577 INFO L226 Difference]: Without dead ends: 15037 [2022-01-18 04:13:57,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 04:13:57,578 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 365 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:57,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 206 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:13:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2022-01-18 04:13:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 12440. [2022-01-18 04:13:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12440 states, 12439 states have (on average 3.7323739850470297) internal successors, (46427), 12439 states have internal predecessors, (46427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12440 states to 12440 states and 46427 transitions. [2022-01-18 04:13:57,863 INFO L78 Accepts]: Start accepts. Automaton has 12440 states and 46427 transitions. Word has length 25 [2022-01-18 04:13:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:57,863 INFO L470 AbstractCegarLoop]: Abstraction has 12440 states and 46427 transitions. [2022-01-18 04:13:57,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:13:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 12440 states and 46427 transitions. [2022-01-18 04:13:57,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:57,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:57,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:57,901 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 04:13:58,086 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 04:13:58,086 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:13:58,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:13:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1178519142, now seen corresponding path program 43 times [2022-01-18 04:13:58,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:13:58,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70676100] [2022-01-18 04:13:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:13:58,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:13:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:58,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:13:58,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70676100] [2022-01-18 04:13:58,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70676100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:13:58,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958532749] [2022-01-18 04:13:58,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:13:58,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:13:58,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:13:58,132 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 04:13:58,134 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 04:13:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:13:58,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:13:58,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:13:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:58,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:13:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:13:58,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958532749] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:13:58,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:13:58,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-01-18 04:13:58,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508042284] [2022-01-18 04:13:58,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:13:58,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:13:58,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:13:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:13:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:13:58,369 INFO L87 Difference]: Start difference. First operand 12440 states and 46427 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:13:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:13:59,450 INFO L93 Difference]: Finished difference Result 15646 states and 55056 transitions. [2022-01-18 04:13:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 04:13:59,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:13:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:13:59,489 INFO L225 Difference]: With dead ends: 15646 [2022-01-18 04:13:59,489 INFO L226 Difference]: Without dead ends: 15634 [2022-01-18 04:13:59,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=971, Invalid=3061, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 04:13:59,490 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 352 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:13:59,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 260 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:13:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15634 states. [2022-01-18 04:13:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15634 to 12392. [2022-01-18 04:13:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12392 states, 12391 states have (on average 3.7316600758615124) internal successors, (46239), 12391 states have internal predecessors, (46239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:13:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12392 states to 12392 states and 46239 transitions. [2022-01-18 04:13:59,859 INFO L78 Accepts]: Start accepts. Automaton has 12392 states and 46239 transitions. Word has length 25 [2022-01-18 04:13:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:13:59,859 INFO L470 AbstractCegarLoop]: Abstraction has 12392 states and 46239 transitions. [2022-01-18 04:13:59,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:13:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 12392 states and 46239 transitions. [2022-01-18 04:13:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:13:59,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:13:59,882 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:13:59,897 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 04:14:00,083 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 04:14:00,083 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash 786211702, now seen corresponding path program 17 times [2022-01-18 04:14:00,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127104420] [2022-01-18 04:14:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:00,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:00,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:00,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127104420] [2022-01-18 04:14:00,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127104420] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:00,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279172152] [2022-01-18 04:14:00,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:14:00,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:00,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:00,130 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 04:14:00,160 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 04:14:00,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:14:00,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:00,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:14:00,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:00,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:00,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279172152] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:00,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:00,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:14:00,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587754780] [2022-01-18 04:14:00,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:00,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:14:00,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:00,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:14:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:14:00,438 INFO L87 Difference]: Start difference. First operand 12392 states and 46239 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 04:14:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:01,640 INFO L93 Difference]: Finished difference Result 15611 states and 55117 transitions. [2022-01-18 04:14:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 04:14:01,641 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 25 [2022-01-18 04:14:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:01,680 INFO L225 Difference]: With dead ends: 15611 [2022-01-18 04:14:01,680 INFO L226 Difference]: Without dead ends: 15611 [2022-01-18 04:14:01,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1262, Invalid=3708, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 04:14:01,681 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 378 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:01,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 263 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:14:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15611 states. [2022-01-18 04:14:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15611 to 12615. [2022-01-18 04:14:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12615 states, 12614 states have (on average 3.7307753289995245) internal successors, (47060), 12614 states have internal predecessors, (47060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:01,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12615 states to 12615 states and 47060 transitions. [2022-01-18 04:14:01,963 INFO L78 Accepts]: Start accepts. Automaton has 12615 states and 47060 transitions. Word has length 25 [2022-01-18 04:14:01,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:01,964 INFO L470 AbstractCegarLoop]: Abstraction has 12615 states and 47060 transitions. [2022-01-18 04:14:01,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 04:14:01,964 INFO L276 IsEmpty]: Start isEmpty. Operand 12615 states and 47060 transitions. [2022-01-18 04:14:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:01,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:01,987 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 04:14:02,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 04:14:02,187 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 04:14:02,188 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:02,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1098899790, now seen corresponding path program 18 times [2022-01-18 04:14:02,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:02,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045606649] [2022-01-18 04:14:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:02,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:02,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:02,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045606649] [2022-01-18 04:14:02,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045606649] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:02,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399310369] [2022-01-18 04:14:02,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:14:02,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:02,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:02,236 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 04:14:02,237 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 04:14:02,260 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:14:02,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:02,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:02,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:02,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:02,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399310369] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:02,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:02,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-01-18 04:14:02,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483165578] [2022-01-18 04:14:02,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:02,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:14:02,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:14:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:14:02,459 INFO L87 Difference]: Start difference. First operand 12615 states and 47060 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:14:03,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:03,591 INFO L93 Difference]: Finished difference Result 38637 states and 135899 transitions. [2022-01-18 04:14:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 04:14:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 25 [2022-01-18 04:14:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:03,702 INFO L225 Difference]: With dead ends: 38637 [2022-01-18 04:14:03,702 INFO L226 Difference]: Without dead ends: 38575 [2022-01-18 04:14:03,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1053, Invalid=3503, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 04:14:03,703 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 498 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:03,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 249 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:14:03,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38575 states. [2022-01-18 04:14:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38575 to 15744. [2022-01-18 04:14:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15744 states, 15743 states have (on average 3.8201740456075717) internal successors, (60141), 15743 states have internal predecessors, (60141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15744 states to 15744 states and 60141 transitions. [2022-01-18 04:14:04,345 INFO L78 Accepts]: Start accepts. Automaton has 15744 states and 60141 transitions. Word has length 25 [2022-01-18 04:14:04,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:04,345 INFO L470 AbstractCegarLoop]: Abstraction has 15744 states and 60141 transitions. [2022-01-18 04:14:04,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:14:04,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15744 states and 60141 transitions. [2022-01-18 04:14:04,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:04,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:04,374 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 04:14:04,389 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 04:14:04,574 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 04:14:04,574 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 801359794, now seen corresponding path program 19 times [2022-01-18 04:14:04,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:04,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256185490] [2022-01-18 04:14:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:04,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:04,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:04,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256185490] [2022-01-18 04:14:04,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256185490] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:04,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193323623] [2022-01-18 04:14:04,632 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:14:04,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:04,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:04,633 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 04:14:04,634 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 04:14:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:04,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:04,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:04,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:04,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193323623] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:04,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:04,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 04:14:04,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388979792] [2022-01-18 04:14:04,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:04,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:14:04,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:14:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:14:04,859 INFO L87 Difference]: Start difference. First operand 15744 states and 60141 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:14:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:06,068 INFO L93 Difference]: Finished difference Result 48113 states and 167521 transitions. [2022-01-18 04:14:06,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 04:14:06,068 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:14:06,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:06,215 INFO L225 Difference]: With dead ends: 48113 [2022-01-18 04:14:06,215 INFO L226 Difference]: Without dead ends: 48057 [2022-01-18 04:14:06,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=867, Invalid=2673, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 04:14:06,216 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 365 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:06,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 357 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:14:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48057 states. [2022-01-18 04:14:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48057 to 16563. [2022-01-18 04:14:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16563 states, 16562 states have (on average 3.779193334138389) internal successors, (62591), 16562 states have internal predecessors, (62591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16563 states to 16563 states and 62591 transitions. [2022-01-18 04:14:07,103 INFO L78 Accepts]: Start accepts. Automaton has 16563 states and 62591 transitions. Word has length 25 [2022-01-18 04:14:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:07,103 INFO L470 AbstractCegarLoop]: Abstraction has 16563 states and 62591 transitions. [2022-01-18 04:14:07,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:14:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 16563 states and 62591 transitions. [2022-01-18 04:14:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:07,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:07,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:14:07,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-01-18 04:14:07,336 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 04:14:07,337 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:07,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:07,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1107594414, now seen corresponding path program 20 times [2022-01-18 04:14:07,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:07,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547829980] [2022-01-18 04:14:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:07,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:07,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:07,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547829980] [2022-01-18 04:14:07,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547829980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:07,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347227344] [2022-01-18 04:14:07,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:14:07,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:07,380 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 04:14:07,381 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 04:14:07,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:14:07,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:07,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:14:07,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:07,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:07,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:07,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347227344] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:07,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:07,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-01-18 04:14:07,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169524230] [2022-01-18 04:14:07,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:07,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:14:07,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:14:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:14:07,632 INFO L87 Difference]: Start difference. First operand 16563 states and 62591 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:14:08,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:08,644 INFO L93 Difference]: Finished difference Result 19098 states and 69360 transitions. [2022-01-18 04:14:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 04:14:08,645 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 25 [2022-01-18 04:14:08,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:08,692 INFO L225 Difference]: With dead ends: 19098 [2022-01-18 04:14:08,692 INFO L226 Difference]: Without dead ends: 19063 [2022-01-18 04:14:08,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=951, Invalid=3081, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 04:14:08,693 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 374 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:08,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 221 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:14:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19063 states. [2022-01-18 04:14:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19063 to 16487. [2022-01-18 04:14:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16487 states, 16486 states have (on average 3.782057503336164) internal successors, (62351), 16486 states have internal predecessors, (62351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16487 states to 16487 states and 62351 transitions. [2022-01-18 04:14:09,045 INFO L78 Accepts]: Start accepts. Automaton has 16487 states and 62351 transitions. Word has length 25 [2022-01-18 04:14:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:09,045 INFO L470 AbstractCegarLoop]: Abstraction has 16487 states and 62351 transitions. [2022-01-18 04:14:09,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:14:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 16487 states and 62351 transitions. [2022-01-18 04:14:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:09,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:09,075 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:14:09,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-01-18 04:14:09,276 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 04:14:09,276 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:09,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1643761502, now seen corresponding path program 21 times [2022-01-18 04:14:09,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:09,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269531058] [2022-01-18 04:14:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:09,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:14:09,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:09,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269531058] [2022-01-18 04:14:09,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269531058] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:09,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616718764] [2022-01-18 04:14:09,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:14:09,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:09,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:09,321 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 04:14:09,322 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 04:14:09,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:14:09,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:09,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:14:09,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:09,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:14:09,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616718764] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:09,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:09,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-01-18 04:14:09,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402621629] [2022-01-18 04:14:09,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:09,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:14:09,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:14:09,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:14:09,574 INFO L87 Difference]: Start difference. First operand 16487 states and 62351 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:14:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:10,601 INFO L93 Difference]: Finished difference Result 19001 states and 69178 transitions. [2022-01-18 04:14:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 04:14:10,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 25 [2022-01-18 04:14:10,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:10,661 INFO L225 Difference]: With dead ends: 19001 [2022-01-18 04:14:10,661 INFO L226 Difference]: Without dead ends: 18959 [2022-01-18 04:14:10,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 04:14:10,662 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 299 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:10,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 279 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:14:10,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18959 states. [2022-01-18 04:14:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18959 to 16471. [2022-01-18 04:14:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16471 states, 16470 states have (on average 3.7820886460230723) internal successors, (62291), 16470 states have internal predecessors, (62291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16471 states to 16471 states and 62291 transitions. [2022-01-18 04:14:11,023 INFO L78 Accepts]: Start accepts. Automaton has 16471 states and 62291 transitions. Word has length 25 [2022-01-18 04:14:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:11,023 INFO L470 AbstractCegarLoop]: Abstraction has 16471 states and 62291 transitions. [2022-01-18 04:14:11,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:14:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 16471 states and 62291 transitions. [2022-01-18 04:14:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:11,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:11,051 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 04:14:11,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-01-18 04:14:11,251 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 04:14:11,252 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1360200822, now seen corresponding path program 22 times [2022-01-18 04:14:11,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:11,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898415153] [2022-01-18 04:14:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:11,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:11,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:11,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898415153] [2022-01-18 04:14:11,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898415153] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:11,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503829367] [2022-01-18 04:14:11,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:14:11,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:11,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:11,305 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 04:14:11,306 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 04:14:11,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:14:11,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:11,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:11,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:11,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:11,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503829367] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:11,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:11,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-01-18 04:14:11,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375374708] [2022-01-18 04:14:11,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:11,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:14:11,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:11,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:14:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:14:11,529 INFO L87 Difference]: Start difference. First operand 16471 states and 62291 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 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 04:14:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:12,443 INFO L93 Difference]: Finished difference Result 28929 states and 102768 transitions. [2022-01-18 04:14:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 04:14:12,444 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 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 25 [2022-01-18 04:14:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:12,532 INFO L225 Difference]: With dead ends: 28929 [2022-01-18 04:14:12,532 INFO L226 Difference]: Without dead ends: 28845 [2022-01-18 04:14:12,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=523, Invalid=1927, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 04:14:12,533 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 272 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:12,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 187 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:14:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28845 states. [2022-01-18 04:14:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28845 to 16976. [2022-01-18 04:14:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16976 states, 16975 states have (on average 3.786215022091311) internal successors, (64271), 16975 states have internal predecessors, (64271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16976 states to 16976 states and 64271 transitions. [2022-01-18 04:14:12,970 INFO L78 Accepts]: Start accepts. Automaton has 16976 states and 64271 transitions. Word has length 25 [2022-01-18 04:14:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:12,970 INFO L470 AbstractCegarLoop]: Abstraction has 16976 states and 64271 transitions. [2022-01-18 04:14:12,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 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 04:14:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 16976 states and 64271 transitions. [2022-01-18 04:14:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:13,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:13,002 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:14:13,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-18 04:14:13,203 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 04:14:13,203 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1101811746, now seen corresponding path program 23 times [2022-01-18 04:14:13,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:13,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481242859] [2022-01-18 04:14:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:13,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:13,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481242859] [2022-01-18 04:14:13,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481242859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:13,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407561388] [2022-01-18 04:14:13,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:14:13,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:13,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:13,259 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 04:14:13,286 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 04:14:13,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:14:13,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:13,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:14:13,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:13,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:13,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407561388] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:13,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:13,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:14:13,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969525823] [2022-01-18 04:14:13,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:13,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:14:13,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:14:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:14:13,566 INFO L87 Difference]: Start difference. First operand 16976 states and 64271 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:14:14,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:14,750 INFO L93 Difference]: Finished difference Result 20172 states and 73083 transitions. [2022-01-18 04:14:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 04:14:14,750 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 25 [2022-01-18 04:14:14,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:14,799 INFO L225 Difference]: With dead ends: 20172 [2022-01-18 04:14:14,799 INFO L226 Difference]: Without dead ends: 20094 [2022-01-18 04:14:14,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1412 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=925, Invalid=3631, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 04:14:14,799 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 301 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:14,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 412 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20094 states. [2022-01-18 04:14:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20094 to 17422. [2022-01-18 04:14:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17422 states, 17421 states have (on average 3.769818035704035) internal successors, (65674), 17421 states have internal predecessors, (65674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17422 states to 17422 states and 65674 transitions. [2022-01-18 04:14:15,180 INFO L78 Accepts]: Start accepts. Automaton has 17422 states and 65674 transitions. Word has length 25 [2022-01-18 04:14:15,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:15,180 INFO L470 AbstractCegarLoop]: Abstraction has 17422 states and 65674 transitions. [2022-01-18 04:14:15,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 04:14:15,180 INFO L276 IsEmpty]: Start isEmpty. Operand 17422 states and 65674 transitions. [2022-01-18 04:14:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:15,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:15,210 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 04:14:15,226 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 04:14:15,411 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 04:14:15,411 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:15,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1500037906, now seen corresponding path program 24 times [2022-01-18 04:14:15,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:15,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102505833] [2022-01-18 04:14:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:15,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:15,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102505833] [2022-01-18 04:14:15,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102505833] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929528979] [2022-01-18 04:14:15,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:14:15,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:15,452 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 04:14:15,453 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 04:14:15,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:14:15,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:15,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:15,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:15,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:15,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929528979] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:15,683 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:15,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 04:14:15,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948462508] [2022-01-18 04:14:15,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:15,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:14:15,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:14:15,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:14:15,684 INFO L87 Difference]: Start difference. First operand 17422 states and 65674 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:14:16,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:16,701 INFO L93 Difference]: Finished difference Result 34778 states and 124552 transitions. [2022-01-18 04:14:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 04:14:16,702 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:14:16,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:16,815 INFO L225 Difference]: With dead ends: 34778 [2022-01-18 04:14:16,815 INFO L226 Difference]: Without dead ends: 34701 [2022-01-18 04:14:16,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=584, Invalid=2068, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 04:14:16,816 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 250 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:16,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 256 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:14:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34701 states. [2022-01-18 04:14:17,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34701 to 17827. [2022-01-18 04:14:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17827 states, 17826 states have (on average 3.773869628632335) internal successors, (67273), 17826 states have internal predecessors, (67273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:17,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17827 states to 17827 states and 67273 transitions. [2022-01-18 04:14:17,343 INFO L78 Accepts]: Start accepts. Automaton has 17827 states and 67273 transitions. Word has length 25 [2022-01-18 04:14:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:17,343 INFO L470 AbstractCegarLoop]: Abstraction has 17827 states and 67273 transitions. [2022-01-18 04:14:17,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:14:17,408 INFO L276 IsEmpty]: Start isEmpty. Operand 17827 states and 67273 transitions. [2022-01-18 04:14:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:17,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:17,445 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 04:14:17,460 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 04:14:17,645 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 04:14:17,645 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1114485558, now seen corresponding path program 25 times [2022-01-18 04:14:17,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:17,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157820255] [2022-01-18 04:14:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:17,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:17,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157820255] [2022-01-18 04:14:17,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157820255] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4308087] [2022-01-18 04:14:17,681 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:14:17,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:17,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:17,682 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 04:14:17,682 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 04:14:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:17,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:17,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:17,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:17,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4308087] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:17,907 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:17,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 04:14:17,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838810360] [2022-01-18 04:14:17,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:17,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:14:17,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:14:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:14:17,907 INFO L87 Difference]: Start difference. First operand 17827 states and 67273 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:14:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:19,695 INFO L93 Difference]: Finished difference Result 35331 states and 124349 transitions. [2022-01-18 04:14:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 04:14:19,696 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:14:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:19,807 INFO L225 Difference]: With dead ends: 35331 [2022-01-18 04:14:19,807 INFO L226 Difference]: Without dead ends: 35205 [2022-01-18 04:14:19,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2172 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1474, Invalid=5006, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 04:14:19,808 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 317 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:19,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 439 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:14:19,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35205 states. [2022-01-18 04:14:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35205 to 18164. [2022-01-18 04:14:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18164 states, 18163 states have (on average 3.7771843858393437) internal successors, (68605), 18163 states have internal predecessors, (68605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18164 states to 18164 states and 68605 transitions. [2022-01-18 04:14:20,380 INFO L78 Accepts]: Start accepts. Automaton has 18164 states and 68605 transitions. Word has length 25 [2022-01-18 04:14:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:20,380 INFO L470 AbstractCegarLoop]: Abstraction has 18164 states and 68605 transitions. [2022-01-18 04:14:20,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:14:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 18164 states and 68605 transitions. [2022-01-18 04:14:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:20,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:20,422 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 04:14:20,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-18 04:14:20,622 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 04:14:20,623 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:20,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:20,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1979778250, now seen corresponding path program 26 times [2022-01-18 04:14:20,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:20,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886279379] [2022-01-18 04:14:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:20,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:20,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:20,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886279379] [2022-01-18 04:14:20,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886279379] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:20,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944901490] [2022-01-18 04:14:20,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:14:20,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:20,661 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 04:14:20,662 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 04:14:20,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:14:20,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:20,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:20,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:20,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:20,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944901490] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:20,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:20,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 04:14:20,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742515968] [2022-01-18 04:14:20,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:20,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:14:20,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:14:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:14:20,889 INFO L87 Difference]: Start difference. First operand 18164 states and 68605 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:14:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:22,648 INFO L93 Difference]: Finished difference Result 38580 states and 136606 transitions. [2022-01-18 04:14:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 04:14:22,648 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:14:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:22,773 INFO L225 Difference]: With dead ends: 38580 [2022-01-18 04:14:22,773 INFO L226 Difference]: Without dead ends: 38566 [2022-01-18 04:14:22,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1329, Invalid=4073, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 04:14:22,774 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 390 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:22,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 439 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:14:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38566 states. [2022-01-18 04:14:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38566 to 21322. [2022-01-18 04:14:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21322 states, 21321 states have (on average 3.8229445147976175) internal successors, (81509), 21321 states have internal predecessors, (81509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21322 states to 21322 states and 81509 transitions. [2022-01-18 04:14:23,493 INFO L78 Accepts]: Start accepts. Automaton has 21322 states and 81509 transitions. Word has length 25 [2022-01-18 04:14:23,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:23,493 INFO L470 AbstractCegarLoop]: Abstraction has 21322 states and 81509 transitions. [2022-01-18 04:14:23,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:14:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 21322 states and 81509 transitions. [2022-01-18 04:14:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:23,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:23,532 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:14:23,547 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 04:14:23,732 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 04:14:23,732 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash 807588790, now seen corresponding path program 27 times [2022-01-18 04:14:23,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:23,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603582880] [2022-01-18 04:14:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:23,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:23,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:23,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603582880] [2022-01-18 04:14:23,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603582880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:23,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533410114] [2022-01-18 04:14:23,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:14:23,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:23,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:23,771 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 04:14:23,772 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 04:14:23,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:14:23,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:23,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:14:23,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:23,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:24,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533410114] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:24,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:24,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-01-18 04:14:24,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541393503] [2022-01-18 04:14:24,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:24,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:14:24,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:14:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:14:24,025 INFO L87 Difference]: Start difference. First operand 21322 states and 81509 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 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 04:14:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:25,022 INFO L93 Difference]: Finished difference Result 24183 states and 89452 transitions. [2022-01-18 04:14:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 04:14:25,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 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 25 [2022-01-18 04:14:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:25,087 INFO L225 Difference]: With dead ends: 24183 [2022-01-18 04:14:25,087 INFO L226 Difference]: Without dead ends: 24175 [2022-01-18 04:14:25,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=859, Invalid=2681, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 04:14:25,088 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 292 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:25,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 259 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:14:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24175 states. [2022-01-18 04:14:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24175 to 21580. [2022-01-18 04:14:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21580 states, 21579 states have (on average 3.812780944436721) internal successors, (82276), 21579 states have internal predecessors, (82276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21580 states to 21580 states and 82276 transitions. [2022-01-18 04:14:25,555 INFO L78 Accepts]: Start accepts. Automaton has 21580 states and 82276 transitions. Word has length 25 [2022-01-18 04:14:25,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:25,555 INFO L470 AbstractCegarLoop]: Abstraction has 21580 states and 82276 transitions. [2022-01-18 04:14:25,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 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 04:14:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand 21580 states and 82276 transitions. [2022-01-18 04:14:25,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:25,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:25,595 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:14:25,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-01-18 04:14:25,797 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 04:14:25,797 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:25,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:25,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1255847150, now seen corresponding path program 28 times [2022-01-18 04:14:25,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:25,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510821726] [2022-01-18 04:14:25,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:25,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:25,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:25,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510821726] [2022-01-18 04:14:25,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510821726] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:25,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472732597] [2022-01-18 04:14:25,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:14:25,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:25,837 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 04:14:25,838 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 04:14:25,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:14:25,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:25,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:14:25,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:26,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:26,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472732597] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:26,089 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:26,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-01-18 04:14:26,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583801276] [2022-01-18 04:14:26,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:26,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:14:26,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:14:26,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:14:26,090 INFO L87 Difference]: Start difference. First operand 21580 states and 82276 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 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 04:14:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:27,585 INFO L93 Difference]: Finished difference Result 25283 states and 92457 transitions. [2022-01-18 04:14:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 04:14:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 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 25 [2022-01-18 04:14:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:27,656 INFO L225 Difference]: With dead ends: 25283 [2022-01-18 04:14:27,656 INFO L226 Difference]: Without dead ends: 25275 [2022-01-18 04:14:27,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1403, Invalid=4917, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 04:14:27,657 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 393 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:27,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 251 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:14:27,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25275 states. [2022-01-18 04:14:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25275 to 21934. [2022-01-18 04:14:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21934 states, 21933 states have (on average 3.803902794875302) internal successors, (83431), 21933 states have internal predecessors, (83431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21934 states to 21934 states and 83431 transitions. [2022-01-18 04:14:28,149 INFO L78 Accepts]: Start accepts. Automaton has 21934 states and 83431 transitions. Word has length 25 [2022-01-18 04:14:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:28,150 INFO L470 AbstractCegarLoop]: Abstraction has 21934 states and 83431 transitions. [2022-01-18 04:14:28,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 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 04:14:28,150 INFO L276 IsEmpty]: Start isEmpty. Operand 21934 states and 83431 transitions. [2022-01-18 04:14:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:28,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:28,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:14:28,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-18 04:14:28,388 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 04:14:28,389 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1128971502, now seen corresponding path program 29 times [2022-01-18 04:14:28,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:28,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419881328] [2022-01-18 04:14:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:28,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:28,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:28,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419881328] [2022-01-18 04:14:28,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419881328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:28,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703471301] [2022-01-18 04:14:28,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:14:28,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:28,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:28,444 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 04:14:28,464 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 04:14:28,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:14:28,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:28,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:14:28,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:28,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:28,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703471301] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:28,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:28,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2022-01-18 04:14:28,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795108346] [2022-01-18 04:14:28,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:28,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:14:28,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:28,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:14:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:14:28,699 INFO L87 Difference]: Start difference. First operand 21934 states and 83431 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:14:29,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:29,743 INFO L93 Difference]: Finished difference Result 24656 states and 90778 transitions. [2022-01-18 04:14:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 04:14:29,744 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 25 [2022-01-18 04:14:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:29,815 INFO L225 Difference]: With dead ends: 24656 [2022-01-18 04:14:29,815 INFO L226 Difference]: Without dead ends: 24628 [2022-01-18 04:14:29,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=824, Invalid=2958, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 04:14:29,816 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 415 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:29,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 223 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:14:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24628 states. [2022-01-18 04:14:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24628 to 21762. [2022-01-18 04:14:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21762 states, 21761 states have (on average 3.806580579936584) internal successors, (82835), 21761 states have internal predecessors, (82835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:30,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21762 states to 21762 states and 82835 transitions. [2022-01-18 04:14:30,350 INFO L78 Accepts]: Start accepts. Automaton has 21762 states and 82835 transitions. Word has length 25 [2022-01-18 04:14:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:30,351 INFO L470 AbstractCegarLoop]: Abstraction has 21762 states and 82835 transitions. [2022-01-18 04:14:30,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 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 04:14:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 21762 states and 82835 transitions. [2022-01-18 04:14:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:30,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:30,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:14:30,407 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 04:14:30,592 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 04:14:30,592 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:30,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:30,592 INFO L85 PathProgramCache]: Analyzing trace with hash -251363790, now seen corresponding path program 30 times [2022-01-18 04:14:30,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:30,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250316518] [2022-01-18 04:14:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:30,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:30,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:30,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250316518] [2022-01-18 04:14:30,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250316518] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:30,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229712315] [2022-01-18 04:14:30,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:14:30,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:30,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:30,635 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 04:14:30,636 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 04:14:30,659 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:14:30,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:30,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:14:30,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:30,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:30,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229712315] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:30,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:30,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 04:14:30,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710320092] [2022-01-18 04:14:30,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:30,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:14:30,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:30,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:14:30,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:14:30,871 INFO L87 Difference]: Start difference. First operand 21762 states and 82835 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 04:14:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:32,553 INFO L93 Difference]: Finished difference Result 31351 states and 113770 transitions. [2022-01-18 04:14:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 04:14:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 25 [2022-01-18 04:14:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:32,651 INFO L225 Difference]: With dead ends: 31351 [2022-01-18 04:14:32,651 INFO L226 Difference]: Without dead ends: 31343 [2022-01-18 04:14:32,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1734, Invalid=5406, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 04:14:32,652 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 377 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:32,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 277 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31343 states. [2022-01-18 04:14:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31343 to 21682. [2022-01-18 04:14:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21682 states, 21681 states have (on average 3.808726534753932) internal successors, (82577), 21681 states have internal predecessors, (82577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21682 states to 21682 states and 82577 transitions. [2022-01-18 04:14:33,205 INFO L78 Accepts]: Start accepts. Automaton has 21682 states and 82577 transitions. Word has length 25 [2022-01-18 04:14:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:33,205 INFO L470 AbstractCegarLoop]: Abstraction has 21682 states and 82577 transitions. [2022-01-18 04:14:33,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 04:14:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 21682 states and 82577 transitions. [2022-01-18 04:14:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:33,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:33,244 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 04:14:33,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 04:14:33,445 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 04:14:33,445 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 195247086, now seen corresponding path program 31 times [2022-01-18 04:14:33,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:33,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917407285] [2022-01-18 04:14:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:33,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:33,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:33,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917407285] [2022-01-18 04:14:33,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917407285] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:33,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000469160] [2022-01-18 04:14:33,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:14:33,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:33,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:33,492 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 04:14:33,508 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 04:14:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:33,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:33,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:33,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:33,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000469160] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:33,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:33,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 04:14:33,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838297603] [2022-01-18 04:14:33,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:33,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:14:33,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:33,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:14:33,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:14:33,707 INFO L87 Difference]: Start difference. First operand 21682 states and 82577 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:35,023 INFO L93 Difference]: Finished difference Result 32460 states and 116584 transitions. [2022-01-18 04:14:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 04:14:35,023 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:14:35,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:35,139 INFO L225 Difference]: With dead ends: 32460 [2022-01-18 04:14:35,139 INFO L226 Difference]: Without dead ends: 32406 [2022-01-18 04:14:35,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=966, Invalid=3456, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 04:14:35,140 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 366 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:35,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 243 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32406 states. [2022-01-18 04:14:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32406 to 17305. [2022-01-18 04:14:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 3.7786061026352287) internal successors, (65385), 17304 states have internal predecessors, (65385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 65385 transitions. [2022-01-18 04:14:35,806 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 65385 transitions. Word has length 25 [2022-01-18 04:14:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:35,806 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 65385 transitions. [2022-01-18 04:14:35,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 65385 transitions. [2022-01-18 04:14:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:35,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:35,838 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 04:14:35,853 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 04:14:36,038 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 04:14:36,038 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash -330182600, now seen corresponding path program 32 times [2022-01-18 04:14:36,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:36,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991556365] [2022-01-18 04:14:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:36,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:36,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:36,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991556365] [2022-01-18 04:14:36,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991556365] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:36,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357158018] [2022-01-18 04:14:36,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:14:36,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:36,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:36,074 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 04:14:36,075 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 04:14:36,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:14:36,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:36,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:36,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:36,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:14:36,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357158018] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:36,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:36,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-01-18 04:14:36,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784510267] [2022-01-18 04:14:36,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:36,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:14:36,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:36,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:14:36,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:14:36,291 INFO L87 Difference]: Start difference. First operand 17305 states and 65385 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 04:14:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:38,185 INFO L93 Difference]: Finished difference Result 36778 states and 129120 transitions. [2022-01-18 04:14:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 04:14:38,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 25 [2022-01-18 04:14:38,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:38,288 INFO L225 Difference]: With dead ends: 36778 [2022-01-18 04:14:38,288 INFO L226 Difference]: Without dead ends: 36631 [2022-01-18 04:14:38,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2328 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1592, Invalid=5214, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 04:14:38,289 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 299 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:38,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 347 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:14:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36631 states. [2022-01-18 04:14:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36631 to 18807. [2022-01-18 04:14:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18807 states, 18806 states have (on average 3.787089226842497) internal successors, (71220), 18806 states have internal predecessors, (71220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18807 states to 18807 states and 71220 transitions. [2022-01-18 04:14:38,838 INFO L78 Accepts]: Start accepts. Automaton has 18807 states and 71220 transitions. Word has length 25 [2022-01-18 04:14:38,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:38,838 INFO L470 AbstractCegarLoop]: Abstraction has 18807 states and 71220 transitions. [2022-01-18 04:14:38,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 04:14:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 18807 states and 71220 transitions. [2022-01-18 04:14:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:38,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:38,873 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 04:14:38,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 04:14:39,073 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 04:14:39,074 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash -661165984, now seen corresponding path program 33 times [2022-01-18 04:14:39,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:39,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927087448] [2022-01-18 04:14:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:39,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:39,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:39,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927087448] [2022-01-18 04:14:39,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927087448] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:39,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154852296] [2022-01-18 04:14:39,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:14:39,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:39,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:39,114 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 04:14:39,114 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 04:14:39,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:14:39,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:39,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:39,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:39,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154852296] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:39,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:39,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-01-18 04:14:39,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443487550] [2022-01-18 04:14:39,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:39,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:14:39,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:14:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:14:39,335 INFO L87 Difference]: Start difference. First operand 18807 states and 71220 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 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 04:14:41,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:41,046 INFO L93 Difference]: Finished difference Result 38461 states and 136607 transitions. [2022-01-18 04:14:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 04:14:41,046 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 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 25 [2022-01-18 04:14:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:41,157 INFO L225 Difference]: With dead ends: 38461 [2022-01-18 04:14:41,157 INFO L226 Difference]: Without dead ends: 38441 [2022-01-18 04:14:41,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2620 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1643, Invalid=5667, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 04:14:41,158 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 416 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:41,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 327 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38441 states. [2022-01-18 04:14:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38441 to 19701. [2022-01-18 04:14:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19701 states, 19700 states have (on average 3.814517766497462) internal successors, (75146), 19700 states have internal predecessors, (75146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19701 states to 19701 states and 75146 transitions. [2022-01-18 04:14:41,853 INFO L78 Accepts]: Start accepts. Automaton has 19701 states and 75146 transitions. Word has length 25 [2022-01-18 04:14:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:41,853 INFO L470 AbstractCegarLoop]: Abstraction has 19701 states and 75146 transitions. [2022-01-18 04:14:41,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 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 04:14:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 19701 states and 75146 transitions. [2022-01-18 04:14:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:41,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:41,888 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 04:14:41,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-01-18 04:14:42,088 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 04:14:42,089 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash 317391460, now seen corresponding path program 34 times [2022-01-18 04:14:42,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:42,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358071820] [2022-01-18 04:14:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:42,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:42,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:42,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358071820] [2022-01-18 04:14:42,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358071820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:42,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129207024] [2022-01-18 04:14:42,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:14:42,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:42,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:42,144 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 04:14:42,146 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 04:14:42,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:14:42,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:42,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:42,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:42,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:42,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129207024] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:42,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:42,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-01-18 04:14:42,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668834134] [2022-01-18 04:14:42,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:42,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:14:42,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:14:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:14:42,361 INFO L87 Difference]: Start difference. First operand 19701 states and 75146 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 04:14:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:43,878 INFO L93 Difference]: Finished difference Result 42407 states and 150603 transitions. [2022-01-18 04:14:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:14:43,879 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 25 [2022-01-18 04:14:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:44,012 INFO L225 Difference]: With dead ends: 42407 [2022-01-18 04:14:44,012 INFO L226 Difference]: Without dead ends: 42407 [2022-01-18 04:14:44,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1245, Invalid=3585, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 04:14:44,013 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 352 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:44,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 283 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42407 states. [2022-01-18 04:14:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42407 to 19861. [2022-01-18 04:14:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19861 states, 19860 states have (on average 3.8128398791540787) internal successors, (75723), 19860 states have internal predecessors, (75723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19861 states to 19861 states and 75723 transitions. [2022-01-18 04:14:44,909 INFO L78 Accepts]: Start accepts. Automaton has 19861 states and 75723 transitions. Word has length 25 [2022-01-18 04:14:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:44,909 INFO L470 AbstractCegarLoop]: Abstraction has 19861 states and 75723 transitions. [2022-01-18 04:14:44,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 04:14:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 19861 states and 75723 transitions. [2022-01-18 04:14:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:44,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:44,951 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 04:14:44,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 04:14:45,152 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 04:14:45,152 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:45,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1954857304, now seen corresponding path program 35 times [2022-01-18 04:14:45,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:45,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865139994] [2022-01-18 04:14:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:45,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:45,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:45,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865139994] [2022-01-18 04:14:45,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865139994] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:45,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079370985] [2022-01-18 04:14:45,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:14:45,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:45,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:45,208 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 04:14:45,209 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 04:14:45,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:14:45,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:45,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:45,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:45,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:45,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079370985] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:45,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:45,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 04:14:45,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50088817] [2022-01-18 04:14:45,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:45,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:14:45,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:45,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:14:45,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:14:45,475 INFO L87 Difference]: Start difference. First operand 19861 states and 75723 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 04:14:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:47,093 INFO L93 Difference]: Finished difference Result 29050 states and 104041 transitions. [2022-01-18 04:14:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 04:14:47,093 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 25 [2022-01-18 04:14:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:47,187 INFO L225 Difference]: With dead ends: 29050 [2022-01-18 04:14:47,187 INFO L226 Difference]: Without dead ends: 29030 [2022-01-18 04:14:47,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2589 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1603, Invalid=6053, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 04:14:47,188 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 357 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:47,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 265 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:47,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29030 states. [2022-01-18 04:14:47,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29030 to 19891. [2022-01-18 04:14:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19891 states, 19890 states have (on average 3.8126696832579188) internal successors, (75834), 19890 states have internal predecessors, (75834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19891 states to 19891 states and 75834 transitions. [2022-01-18 04:14:47,882 INFO L78 Accepts]: Start accepts. Automaton has 19891 states and 75834 transitions. Word has length 25 [2022-01-18 04:14:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:47,882 INFO L470 AbstractCegarLoop]: Abstraction has 19891 states and 75834 transitions. [2022-01-18 04:14:47,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 04:14:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand 19891 states and 75834 transitions. [2022-01-18 04:14:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:48,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:48,031 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 04:14:48,046 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 04:14:48,232 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 04:14:48,232 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash -653679320, now seen corresponding path program 36 times [2022-01-18 04:14:48,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:48,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198722319] [2022-01-18 04:14:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:48,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:48,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:48,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198722319] [2022-01-18 04:14:48,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198722319] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:48,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211049257] [2022-01-18 04:14:48,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:14:48,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:48,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:48,268 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 04:14:48,268 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 04:14:48,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:14:48,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:48,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:48,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:48,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:48,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211049257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:48,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:48,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 04:14:48,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092181053] [2022-01-18 04:14:48,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:48,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:14:48,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:14:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:14:48,479 INFO L87 Difference]: Start difference. First operand 19891 states and 75834 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:14:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:49,777 INFO L93 Difference]: Finished difference Result 27444 states and 99436 transitions. [2022-01-18 04:14:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 04:14:49,778 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 25 [2022-01-18 04:14:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:49,855 INFO L225 Difference]: With dead ends: 27444 [2022-01-18 04:14:49,856 INFO L226 Difference]: Without dead ends: 27416 [2022-01-18 04:14:49,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=988, Invalid=3568, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 04:14:49,856 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 335 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:49,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 238 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27416 states. [2022-01-18 04:14:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27416 to 19843. [2022-01-18 04:14:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19843 states, 19842 states have (on average 3.81267009374055) internal successors, (75651), 19842 states have internal predecessors, (75651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19843 states to 19843 states and 75651 transitions. [2022-01-18 04:14:50,470 INFO L78 Accepts]: Start accepts. Automaton has 19843 states and 75651 transitions. Word has length 25 [2022-01-18 04:14:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:50,470 INFO L470 AbstractCegarLoop]: Abstraction has 19843 states and 75651 transitions. [2022-01-18 04:14:50,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 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 04:14:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 19843 states and 75651 transitions. [2022-01-18 04:14:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:50,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:50,507 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 04:14:50,523 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 04:14:50,708 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 04:14:50,708 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:50,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash -652057300, now seen corresponding path program 37 times [2022-01-18 04:14:50,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:50,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384324515] [2022-01-18 04:14:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:50,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:50,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:50,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384324515] [2022-01-18 04:14:50,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384324515] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:50,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740813538] [2022-01-18 04:14:50,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:14:50,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:50,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:50,756 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 04:14:50,757 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 04:14:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:50,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:50,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:50,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:50,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740813538] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:50,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:50,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-01-18 04:14:50,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735048827] [2022-01-18 04:14:50,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:50,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:14:50,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:14:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:14:50,980 INFO L87 Difference]: Start difference. First operand 19843 states and 75651 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 04:14:52,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:52,615 INFO L93 Difference]: Finished difference Result 44907 states and 159794 transitions. [2022-01-18 04:14:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 04:14:52,615 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 25 [2022-01-18 04:14:52,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:52,780 INFO L225 Difference]: With dead ends: 44907 [2022-01-18 04:14:52,780 INFO L226 Difference]: Without dead ends: 44907 [2022-01-18 04:14:52,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1347, Invalid=4055, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 04:14:52,781 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 356 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:52,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 322 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44907 states. [2022-01-18 04:14:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44907 to 20040. [2022-01-18 04:14:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20040 states, 20039 states have (on average 3.822945256749339) internal successors, (76608), 20039 states have internal predecessors, (76608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:53,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20040 states to 20040 states and 76608 transitions. [2022-01-18 04:14:53,674 INFO L78 Accepts]: Start accepts. Automaton has 20040 states and 76608 transitions. Word has length 25 [2022-01-18 04:14:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:53,674 INFO L470 AbstractCegarLoop]: Abstraction has 20040 states and 76608 transitions. [2022-01-18 04:14:53,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 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 04:14:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 20040 states and 76608 transitions. [2022-01-18 04:14:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:53,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:53,716 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 04:14:53,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 04:14:53,917 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 04:14:53,917 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1522968036, now seen corresponding path program 38 times [2022-01-18 04:14:53,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:53,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903261805] [2022-01-18 04:14:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:53,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:53,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:53,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903261805] [2022-01-18 04:14:53,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903261805] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:53,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679536005] [2022-01-18 04:14:53,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:14:53,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:53,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:53,961 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 04:14:53,962 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 04:14:53,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:14:53,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:53,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:53,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:54,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:54,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679536005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:54,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:54,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-01-18 04:14:54,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937626086] [2022-01-18 04:14:54,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:54,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 04:14:54,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:54,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 04:14:54,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-01-18 04:14:54,175 INFO L87 Difference]: Start difference. First operand 20040 states and 76608 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:55,886 INFO L93 Difference]: Finished difference Result 38585 states and 138924 transitions. [2022-01-18 04:14:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:14:55,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:14:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:56,040 INFO L225 Difference]: With dead ends: 38585 [2022-01-18 04:14:56,040 INFO L226 Difference]: Without dead ends: 38559 [2022-01-18 04:14:56,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1087, Invalid=3605, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 04:14:56,040 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 303 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:56,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 313 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:14:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38559 states. [2022-01-18 04:14:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38559 to 18199. [2022-01-18 04:14:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18199 states, 18198 states have (on average 3.7716232553027806) internal successors, (68636), 18198 states have internal predecessors, (68636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18199 states to 18199 states and 68636 transitions. [2022-01-18 04:14:56,791 INFO L78 Accepts]: Start accepts. Automaton has 18199 states and 68636 transitions. Word has length 25 [2022-01-18 04:14:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:56,791 INFO L470 AbstractCegarLoop]: Abstraction has 18199 states and 68636 transitions. [2022-01-18 04:14:56,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 18199 states and 68636 transitions. [2022-01-18 04:14:56,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:56,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:56,828 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 04:14:56,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-01-18 04:14:57,029 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 04:14:57,029 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:57,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1679166192, now seen corresponding path program 39 times [2022-01-18 04:14:57,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001627076] [2022-01-18 04:14:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:57,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:57,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:57,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001627076] [2022-01-18 04:14:57,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001627076] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:57,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313475731] [2022-01-18 04:14:57,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:14:57,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:57,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:57,087 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 04:14:57,097 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 04:14:57,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:14:57,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:14:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:14:57,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:14:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:57,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:14:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:57,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313475731] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:14:57,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:14:57,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-01-18 04:14:57,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358517566] [2022-01-18 04:14:57,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:14:57,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:14:57,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:14:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:14:57,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:14:57,334 INFO L87 Difference]: Start difference. First operand 18199 states and 68636 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 04:14:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:14:58,796 INFO L93 Difference]: Finished difference Result 40360 states and 142259 transitions. [2022-01-18 04:14:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 04:14:58,797 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 25 [2022-01-18 04:14:58,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:14:58,923 INFO L225 Difference]: With dead ends: 40360 [2022-01-18 04:14:58,923 INFO L226 Difference]: Without dead ends: 40255 [2022-01-18 04:14:58,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=979, Invalid=3311, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 04:14:58,924 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 332 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:14:58,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 360 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:14:58,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40255 states. [2022-01-18 04:14:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40255 to 20551. [2022-01-18 04:14:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20551 states, 20550 states have (on average 3.7790267639902675) internal successors, (77659), 20550 states have internal predecessors, (77659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:14:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20551 states to 20551 states and 77659 transitions. [2022-01-18 04:14:59,707 INFO L78 Accepts]: Start accepts. Automaton has 20551 states and 77659 transitions. Word has length 25 [2022-01-18 04:14:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:14:59,707 INFO L470 AbstractCegarLoop]: Abstraction has 20551 states and 77659 transitions. [2022-01-18 04:14:59,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 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 04:14:59,708 INFO L276 IsEmpty]: Start isEmpty. Operand 20551 states and 77659 transitions. [2022-01-18 04:14:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:14:59,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:14:59,749 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:14:59,765 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 04:14:59,949 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 04:14:59,949 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:14:59,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:14:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash 279298928, now seen corresponding path program 40 times [2022-01-18 04:14:59,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:14:59,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128491552] [2022-01-18 04:14:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:14:59,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:14:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:14:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:14:59,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:14:59,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128491552] [2022-01-18 04:14:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128491552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:14:59,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50435110] [2022-01-18 04:14:59,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:14:59,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:14:59,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:14:59,996 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 04:14:59,996 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 04:15:00,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:15:00,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:00,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:00,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:00,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:00,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50435110] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:00,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:00,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 04:15:00,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980465281] [2022-01-18 04:15:00,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:00,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:15:00,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:15:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:15:00,226 INFO L87 Difference]: Start difference. First operand 20551 states and 77659 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:01,370 INFO L93 Difference]: Finished difference Result 22941 states and 84154 transitions. [2022-01-18 04:15:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 04:15:01,370 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:15:01,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:01,436 INFO L225 Difference]: With dead ends: 22941 [2022-01-18 04:15:01,436 INFO L226 Difference]: Without dead ends: 22933 [2022-01-18 04:15:01,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=830, Invalid=2710, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 04:15:01,437 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 263 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:01,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 332 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:15:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22933 states. [2022-01-18 04:15:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22933 to 20586. [2022-01-18 04:15:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20586 states, 20585 states have (on average 3.780616954092786) internal successors, (77824), 20585 states have internal predecessors, (77824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20586 states to 20586 states and 77824 transitions. [2022-01-18 04:15:02,031 INFO L78 Accepts]: Start accepts. Automaton has 20586 states and 77824 transitions. Word has length 25 [2022-01-18 04:15:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:02,031 INFO L470 AbstractCegarLoop]: Abstraction has 20586 states and 77824 transitions. [2022-01-18 04:15:02,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:02,031 INFO L276 IsEmpty]: Start isEmpty. Operand 20586 states and 77824 transitions. [2022-01-18 04:15:02,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:02,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:02,070 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:02,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-01-18 04:15:02,270 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 04:15:02,271 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -187524200, now seen corresponding path program 41 times [2022-01-18 04:15:02,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:02,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216719592] [2022-01-18 04:15:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:02,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:02,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:02,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216719592] [2022-01-18 04:15:02,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216719592] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:02,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620235198] [2022-01-18 04:15:02,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:15:02,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:02,318 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 04:15:02,318 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 04:15:02,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:15:02,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:02,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:02,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:02,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:15:02,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620235198] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:02,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:02,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 04:15:02,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096005826] [2022-01-18 04:15:02,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:02,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:15:02,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:02,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:15:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:15:02,550 INFO L87 Difference]: Start difference. First operand 20586 states and 77824 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:03,676 INFO L93 Difference]: Finished difference Result 23579 states and 86042 transitions. [2022-01-18 04:15:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 04:15:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:15:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:03,741 INFO L225 Difference]: With dead ends: 23579 [2022-01-18 04:15:03,741 INFO L226 Difference]: Without dead ends: 23571 [2022-01-18 04:15:03,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=761, Invalid=2545, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 04:15:03,742 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 307 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:03,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 260 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:15:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23571 states. [2022-01-18 04:15:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23571 to 20830. [2022-01-18 04:15:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20830 states, 20829 states have (on average 3.7727207259109896) internal successors, (78582), 20829 states have internal predecessors, (78582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20830 states to 20830 states and 78582 transitions. [2022-01-18 04:15:04,266 INFO L78 Accepts]: Start accepts. Automaton has 20830 states and 78582 transitions. Word has length 25 [2022-01-18 04:15:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:04,266 INFO L470 AbstractCegarLoop]: Abstraction has 20830 states and 78582 transitions. [2022-01-18 04:15:04,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 20830 states and 78582 transitions. [2022-01-18 04:15:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:04,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:04,302 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:04,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-01-18 04:15:04,503 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 04:15:04,503 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:04,503 INFO L85 PathProgramCache]: Analyzing trace with hash -314399848, now seen corresponding path program 42 times [2022-01-18 04:15:04,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:04,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075385119] [2022-01-18 04:15:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:04,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:04,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:04,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075385119] [2022-01-18 04:15:04,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075385119] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:04,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521913462] [2022-01-18 04:15:04,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:15:04,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:04,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:04,543 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 04:15:04,544 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 04:15:04,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:15:04,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:04,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:04,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:04,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:04,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521913462] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:04,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:04,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-01-18 04:15:04,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825601871] [2022-01-18 04:15:04,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:04,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:15:04,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:04,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:15:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:15:04,776 INFO L87 Difference]: Start difference. First operand 20830 states and 78582 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 04:15:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:05,758 INFO L93 Difference]: Finished difference Result 23174 states and 84978 transitions. [2022-01-18 04:15:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 04:15:05,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 25 [2022-01-18 04:15:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:05,824 INFO L225 Difference]: With dead ends: 23174 [2022-01-18 04:15:05,824 INFO L226 Difference]: Without dead ends: 23153 [2022-01-18 04:15:05,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=580, Invalid=2072, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 04:15:05,825 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 304 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:05,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 211 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:15:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23153 states. [2022-01-18 04:15:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23153 to 20830. [2022-01-18 04:15:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20830 states, 20829 states have (on average 3.772144606078064) internal successors, (78570), 20829 states have internal predecessors, (78570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20830 states to 20830 states and 78570 transitions. [2022-01-18 04:15:06,483 INFO L78 Accepts]: Start accepts. Automaton has 20830 states and 78570 transitions. Word has length 25 [2022-01-18 04:15:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:06,483 INFO L470 AbstractCegarLoop]: Abstraction has 20830 states and 78570 transitions. [2022-01-18 04:15:06,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 04:15:06,483 INFO L276 IsEmpty]: Start isEmpty. Operand 20830 states and 78570 transitions. [2022-01-18 04:15:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:06,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:06,521 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:06,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-01-18 04:15:06,722 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 04:15:06,722 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2144293020, now seen corresponding path program 43 times [2022-01-18 04:15:06,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:06,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891133612] [2022-01-18 04:15:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:06,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:06,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:06,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891133612] [2022-01-18 04:15:06,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891133612] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:06,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679027748] [2022-01-18 04:15:06,779 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:15:06,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:06,780 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 04:15:06,804 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 04:15:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:06,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:06,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:06,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:07,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679027748] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:07,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:07,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 04:15:07,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443645662] [2022-01-18 04:15:07,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:07,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:15:07,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:15:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:15:07,039 INFO L87 Difference]: Start difference. First operand 20830 states and 78570 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 04:15:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:07,847 INFO L93 Difference]: Finished difference Result 22869 states and 84154 transitions. [2022-01-18 04:15:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 04:15:07,847 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 25 [2022-01-18 04:15:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:07,909 INFO L225 Difference]: With dead ends: 22869 [2022-01-18 04:15:07,909 INFO L226 Difference]: Without dead ends: 22827 [2022-01-18 04:15:07,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=575, Invalid=2181, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 04:15:07,910 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 231 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:07,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 247 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:15:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22827 states. [2022-01-18 04:15:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22827 to 20880. [2022-01-18 04:15:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20880 states, 20879 states have (on average 3.7699602471382727) internal successors, (78713), 20879 states have internal predecessors, (78713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20880 states to 20880 states and 78713 transitions. [2022-01-18 04:15:08,508 INFO L78 Accepts]: Start accepts. Automaton has 20880 states and 78713 transitions. Word has length 25 [2022-01-18 04:15:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:08,508 INFO L470 AbstractCegarLoop]: Abstraction has 20880 states and 78713 transitions. [2022-01-18 04:15:08,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 04:15:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 20880 states and 78713 transitions. [2022-01-18 04:15:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:08,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:08,722 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:08,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-01-18 04:15:08,926 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 04:15:08,926 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash -617290344, now seen corresponding path program 44 times [2022-01-18 04:15:08,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807424228] [2022-01-18 04:15:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:08,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:08,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:08,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807424228] [2022-01-18 04:15:08,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807424228] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:08,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954922365] [2022-01-18 04:15:08,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:15:08,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:08,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:08,976 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 04:15:08,977 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 04:15:08,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:15:08,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:08,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:08,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:09,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:09,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954922365] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:09,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:09,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 04:15:09,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317058628] [2022-01-18 04:15:09,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:09,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:15:09,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:15:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:15:09,214 INFO L87 Difference]: Start difference. First operand 20880 states and 78713 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 04:15:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:10,688 INFO L93 Difference]: Finished difference Result 25298 states and 91065 transitions. [2022-01-18 04:15:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 04:15:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 25 [2022-01-18 04:15:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:10,757 INFO L225 Difference]: With dead ends: 25298 [2022-01-18 04:15:10,757 INFO L226 Difference]: Without dead ends: 25290 [2022-01-18 04:15:10,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1533, Invalid=4629, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 04:15:10,758 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 408 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:10,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 280 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:15:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25290 states. [2022-01-18 04:15:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25290 to 20938. [2022-01-18 04:15:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20938 states, 20937 states have (on average 3.7672063810479055) internal successors, (78874), 20937 states have internal predecessors, (78874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:11,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20938 states to 20938 states and 78874 transitions. [2022-01-18 04:15:11,430 INFO L78 Accepts]: Start accepts. Automaton has 20938 states and 78874 transitions. Word has length 25 [2022-01-18 04:15:11,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:11,430 INFO L470 AbstractCegarLoop]: Abstraction has 20938 states and 78874 transitions. [2022-01-18 04:15:11,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 04:15:11,431 INFO L276 IsEmpty]: Start isEmpty. Operand 20938 states and 78874 transitions. [2022-01-18 04:15:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:11,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:11,479 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:11,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 04:15:11,680 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 04:15:11,680 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:11,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:11,680 INFO L85 PathProgramCache]: Analyzing trace with hash -744165992, now seen corresponding path program 45 times [2022-01-18 04:15:11,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:11,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977540373] [2022-01-18 04:15:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:11,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:11,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:11,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977540373] [2022-01-18 04:15:11,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977540373] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:11,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409012357] [2022-01-18 04:15:11,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:15:11,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:11,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:11,728 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 04:15:11,728 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 04:15:11,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:15:11,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:11,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:11,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:11,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409012357] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:11,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:11,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 04:15:11,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374973486] [2022-01-18 04:15:11,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:11,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:15:11,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:15:11,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:15:11,982 INFO L87 Difference]: Start difference. First operand 20938 states and 78874 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 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 04:15:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:13,393 INFO L93 Difference]: Finished difference Result 24738 states and 89541 transitions. [2022-01-18 04:15:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:15:13,393 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 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 25 [2022-01-18 04:15:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:13,461 INFO L225 Difference]: With dead ends: 24738 [2022-01-18 04:15:13,461 INFO L226 Difference]: Without dead ends: 24724 [2022-01-18 04:15:13,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=3794, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 04:15:13,462 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 402 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:13,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 292 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:15:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24724 states. [2022-01-18 04:15:13,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24724 to 20870. [2022-01-18 04:15:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20870 states, 20869 states have (on average 3.767502036513489) internal successors, (78624), 20869 states have internal predecessors, (78624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20870 states to 20870 states and 78624 transitions. [2022-01-18 04:15:14,020 INFO L78 Accepts]: Start accepts. Automaton has 20870 states and 78624 transitions. Word has length 25 [2022-01-18 04:15:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:14,020 INFO L470 AbstractCegarLoop]: Abstraction has 20870 states and 78624 transitions. [2022-01-18 04:15:14,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 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 04:15:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 20870 states and 78624 transitions. [2022-01-18 04:15:14,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:14,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:14,058 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:14,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-18 04:15:14,258 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 04:15:14,259 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:14,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1714526876, now seen corresponding path program 46 times [2022-01-18 04:15:14,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:14,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869604802] [2022-01-18 04:15:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:14,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:14,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:14,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869604802] [2022-01-18 04:15:14,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869604802] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:14,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472852116] [2022-01-18 04:15:14,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:15:14,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:14,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:14,305 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 04:15:14,306 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 04:15:14,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:15:14,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:14,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:14,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:14,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:14,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472852116] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:14,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:14,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 04:15:14,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183640257] [2022-01-18 04:15:14,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:14,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:15:14,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:15:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:15:14,544 INFO L87 Difference]: Start difference. First operand 20870 states and 78624 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 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 04:15:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:15,825 INFO L93 Difference]: Finished difference Result 24543 states and 89002 transitions. [2022-01-18 04:15:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 04:15:15,831 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 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 25 [2022-01-18 04:15:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:15,902 INFO L225 Difference]: With dead ends: 24543 [2022-01-18 04:15:15,902 INFO L226 Difference]: Without dead ends: 24501 [2022-01-18 04:15:15,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=881, Invalid=3025, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 04:15:15,902 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 393 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:15,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 282 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:15:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24501 states. [2022-01-18 04:15:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24501 to 20870. [2022-01-18 04:15:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20870 states, 20869 states have (on average 3.764626958646797) internal successors, (78564), 20869 states have internal predecessors, (78564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20870 states to 20870 states and 78564 transitions. [2022-01-18 04:15:16,318 INFO L78 Accepts]: Start accepts. Automaton has 20870 states and 78564 transitions. Word has length 25 [2022-01-18 04:15:16,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:16,318 INFO L470 AbstractCegarLoop]: Abstraction has 20870 states and 78564 transitions. [2022-01-18 04:15:16,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 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 04:15:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 20870 states and 78564 transitions. [2022-01-18 04:15:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:16,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:16,495 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:16,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-18 04:15:16,695 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 04:15:16,695 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash -122616932, now seen corresponding path program 47 times [2022-01-18 04:15:16,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:16,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851276189] [2022-01-18 04:15:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:16,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:16,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851276189] [2022-01-18 04:15:16,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851276189] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436465967] [2022-01-18 04:15:16,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:15:16,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:16,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:16,745 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 04:15:16,746 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 04:15:16,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:15:16,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:16,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:16,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:16,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:16,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436465967] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:16,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:16,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 04:15:16,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620023596] [2022-01-18 04:15:16,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:16,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:15:16,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:16,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:15:16,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:15:16,972 INFO L87 Difference]: Start difference. First operand 20870 states and 78564 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 04:15:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:18,483 INFO L93 Difference]: Finished difference Result 25180 states and 90786 transitions. [2022-01-18 04:15:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 04:15:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 25 [2022-01-18 04:15:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:18,556 INFO L225 Difference]: With dead ends: 25180 [2022-01-18 04:15:18,556 INFO L226 Difference]: Without dead ends: 25174 [2022-01-18 04:15:18,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1521, Invalid=4641, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 04:15:18,557 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 380 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:18,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 387 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:15:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25174 states. [2022-01-18 04:15:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25174 to 20939. [2022-01-18 04:15:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20939 states, 20938 states have (on average 3.7627280542554207) internal successors, (78784), 20938 states have internal predecessors, (78784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20939 states to 20939 states and 78784 transitions. [2022-01-18 04:15:19,183 INFO L78 Accepts]: Start accepts. Automaton has 20939 states and 78784 transitions. Word has length 25 [2022-01-18 04:15:19,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:19,183 INFO L470 AbstractCegarLoop]: Abstraction has 20939 states and 78784 transitions. [2022-01-18 04:15:19,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 04:15:19,183 INFO L276 IsEmpty]: Start isEmpty. Operand 20939 states and 78784 transitions. [2022-01-18 04:15:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:19,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:19,224 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 04:15:19,239 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 04:15:19,424 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 04:15:19,424 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:19,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:19,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1464786516, now seen corresponding path program 48 times [2022-01-18 04:15:19,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:19,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74375296] [2022-01-18 04:15:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:19,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:19,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:19,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74375296] [2022-01-18 04:15:19,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74375296] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:19,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138544526] [2022-01-18 04:15:19,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:15:19,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:19,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:19,490 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 04:15:19,492 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 04:15:19,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:15:19,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:19,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:15:19,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:19,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:19,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138544526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:19,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:19,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-01-18 04:15:19,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691337855] [2022-01-18 04:15:19,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:19,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:15:19,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:19,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:15:19,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:15:19,733 INFO L87 Difference]: Start difference. First operand 20939 states and 78784 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 04:15:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:21,429 INFO L93 Difference]: Finished difference Result 58125 states and 204380 transitions. [2022-01-18 04:15:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 04:15:21,436 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 25 [2022-01-18 04:15:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:21,652 INFO L225 Difference]: With dead ends: 58125 [2022-01-18 04:15:21,653 INFO L226 Difference]: Without dead ends: 58111 [2022-01-18 04:15:21,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1068, Invalid=4188, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 04:15:21,653 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 427 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:21,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 388 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:15:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58111 states. [2022-01-18 04:15:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58111 to 26073. [2022-01-18 04:15:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26073 states, 26072 states have (on average 3.828973611537281) internal successors, (99829), 26072 states have internal predecessors, (99829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26073 states to 26073 states and 99829 transitions. [2022-01-18 04:15:22,832 INFO L78 Accepts]: Start accepts. Automaton has 26073 states and 99829 transitions. Word has length 25 [2022-01-18 04:15:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:22,832 INFO L470 AbstractCegarLoop]: Abstraction has 26073 states and 99829 transitions. [2022-01-18 04:15:22,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 04:15:22,832 INFO L276 IsEmpty]: Start isEmpty. Operand 26073 states and 99829 transitions. [2022-01-18 04:15:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:22,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:22,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:22,901 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 04:15:23,086 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 04:15:23,086 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1012330792, now seen corresponding path program 49 times [2022-01-18 04:15:23,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:23,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600598080] [2022-01-18 04:15:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:23,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:23,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:23,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600598080] [2022-01-18 04:15:23,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600598080] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574784373] [2022-01-18 04:15:23,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:15:23,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:23,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:23,151 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 04:15:23,152 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 04:15:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:23,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:23,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:23,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:23,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574784373] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:23,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:23,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 04:15:23,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893011154] [2022-01-18 04:15:23,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:23,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:15:23,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:23,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:15:23,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:15:23,452 INFO L87 Difference]: Start difference. First operand 26073 states and 99829 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 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 04:15:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:25,866 INFO L93 Difference]: Finished difference Result 48693 states and 178339 transitions. [2022-01-18 04:15:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 04:15:25,866 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 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 25 [2022-01-18 04:15:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:26,024 INFO L225 Difference]: With dead ends: 48693 [2022-01-18 04:15:26,024 INFO L226 Difference]: Without dead ends: 48685 [2022-01-18 04:15:26,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2572, Invalid=9418, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 04:15:26,025 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 505 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:26,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 493 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:15:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48685 states. [2022-01-18 04:15:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48685 to 26268. [2022-01-18 04:15:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26268 states, 26267 states have (on average 3.834012258727681) internal successors, (100708), 26267 states have internal predecessors, (100708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26268 states to 26268 states and 100708 transitions. [2022-01-18 04:15:27,112 INFO L78 Accepts]: Start accepts. Automaton has 26268 states and 100708 transitions. Word has length 25 [2022-01-18 04:15:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:27,112 INFO L470 AbstractCegarLoop]: Abstraction has 26268 states and 100708 transitions. [2022-01-18 04:15:27,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 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 04:15:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 26268 states and 100708 transitions. [2022-01-18 04:15:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:27,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:27,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:27,183 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 04:15:27,369 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 04:15:27,369 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:27,369 INFO L85 PathProgramCache]: Analyzing trace with hash 640471336, now seen corresponding path program 50 times [2022-01-18 04:15:27,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:27,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253657755] [2022-01-18 04:15:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:27,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:27,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:27,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253657755] [2022-01-18 04:15:27,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253657755] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:27,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77618773] [2022-01-18 04:15:27,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:15:27,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:27,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:27,424 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 04:15:27,424 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 04:15:27,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:15:27,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:27,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:27,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:27,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:27,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77618773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:27,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:27,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 04:15:27,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820953865] [2022-01-18 04:15:27,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:27,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:15:27,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:27,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:15:27,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:15:27,719 INFO L87 Difference]: Start difference. First operand 26268 states and 100708 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 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 04:15:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:29,562 INFO L93 Difference]: Finished difference Result 44483 states and 163225 transitions. [2022-01-18 04:15:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 04:15:29,562 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 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 25 [2022-01-18 04:15:29,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:29,715 INFO L225 Difference]: With dead ends: 44483 [2022-01-18 04:15:29,716 INFO L226 Difference]: Without dead ends: 44477 [2022-01-18 04:15:29,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2307 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1624, Invalid=5348, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 04:15:29,717 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 320 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:29,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 521 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:15:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44477 states. [2022-01-18 04:15:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44477 to 26193. [2022-01-18 04:15:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26193 states, 26192 states have (on average 3.831589798411729) internal successors, (100357), 26192 states have internal predecessors, (100357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26193 states to 26193 states and 100357 transitions. [2022-01-18 04:15:30,684 INFO L78 Accepts]: Start accepts. Automaton has 26193 states and 100357 transitions. Word has length 25 [2022-01-18 04:15:30,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:30,684 INFO L470 AbstractCegarLoop]: Abstraction has 26193 states and 100357 transitions. [2022-01-18 04:15:30,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 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 04:15:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26193 states and 100357 transitions. [2022-01-18 04:15:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:30,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:30,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:30,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-01-18 04:15:30,940 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 04:15:30,941 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:30,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:30,941 INFO L85 PathProgramCache]: Analyzing trace with hash 710238820, now seen corresponding path program 51 times [2022-01-18 04:15:30,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:30,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902396941] [2022-01-18 04:15:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:30,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:31,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:31,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902396941] [2022-01-18 04:15:31,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902396941] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:31,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003474198] [2022-01-18 04:15:31,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:15:31,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:31,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:31,154 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 04:15:31,155 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 04:15:31,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:15:31,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:31,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:15:31,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:31,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:31,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003474198] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:31,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:31,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-01-18 04:15:31,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852929057] [2022-01-18 04:15:31,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:31,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:15:31,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:15:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:15:31,364 INFO L87 Difference]: Start difference. First operand 26193 states and 100357 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 04:15:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:32,782 INFO L93 Difference]: Finished difference Result 52333 states and 186074 transitions. [2022-01-18 04:15:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 04:15:32,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 25 [2022-01-18 04:15:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:32,955 INFO L225 Difference]: With dead ends: 52333 [2022-01-18 04:15:32,955 INFO L226 Difference]: Without dead ends: 52301 [2022-01-18 04:15:32,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1564 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=965, Invalid=4005, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 04:15:32,956 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 567 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:32,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 314 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:15:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52301 states. [2022-01-18 04:15:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52301 to 26092. [2022-01-18 04:15:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26092 states, 26091 states have (on average 3.825495381549193) internal successors, (99811), 26091 states have internal predecessors, (99811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:34,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26092 states to 26092 states and 99811 transitions. [2022-01-18 04:15:34,165 INFO L78 Accepts]: Start accepts. Automaton has 26092 states and 99811 transitions. Word has length 25 [2022-01-18 04:15:34,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:34,166 INFO L470 AbstractCegarLoop]: Abstraction has 26092 states and 99811 transitions. [2022-01-18 04:15:34,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 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 04:15:34,166 INFO L276 IsEmpty]: Start isEmpty. Operand 26092 states and 99811 transitions. [2022-01-18 04:15:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:34,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:34,222 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:34,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-01-18 04:15:34,423 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 04:15:34,423 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash -296212516, now seen corresponding path program 52 times [2022-01-18 04:15:34,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:34,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760801077] [2022-01-18 04:15:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:34,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:34,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760801077] [2022-01-18 04:15:34,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760801077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598091393] [2022-01-18 04:15:34,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:15:34,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:34,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:34,499 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 04:15:34,500 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 04:15:34,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:15:34,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:34,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:34,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:34,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:34,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598091393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:34,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:34,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-01-18 04:15:34,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090179560] [2022-01-18 04:15:34,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:34,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 04:15:34,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 04:15:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-01-18 04:15:34,802 INFO L87 Difference]: Start difference. First operand 26092 states and 99811 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 21 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 04:15:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:36,262 INFO L93 Difference]: Finished difference Result 34759 states and 128404 transitions. [2022-01-18 04:15:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 04:15:36,262 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 21 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 25 [2022-01-18 04:15:36,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:36,368 INFO L225 Difference]: With dead ends: 34759 [2022-01-18 04:15:36,368 INFO L226 Difference]: Without dead ends: 34753 [2022-01-18 04:15:36,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=923, Invalid=3769, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 04:15:36,369 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 250 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:36,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 538 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:15:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34753 states. [2022-01-18 04:15:37,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34753 to 26308. [2022-01-18 04:15:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26308 states, 26307 states have (on average 3.821644429239366) internal successors, (100536), 26307 states have internal predecessors, (100536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26308 states to 26308 states and 100536 transitions. [2022-01-18 04:15:37,382 INFO L78 Accepts]: Start accepts. Automaton has 26308 states and 100536 transitions. Word has length 25 [2022-01-18 04:15:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 26308 states and 100536 transitions. [2022-01-18 04:15:37,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 21 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 04:15:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 26308 states and 100536 transitions. [2022-01-18 04:15:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:37,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:37,435 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 04:15:37,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-01-18 04:15:37,635 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 04:15:37,636 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1840364470, now seen corresponding path program 53 times [2022-01-18 04:15:37,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:37,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091222580] [2022-01-18 04:15:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:37,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:37,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:37,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091222580] [2022-01-18 04:15:37,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091222580] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:37,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656448095] [2022-01-18 04:15:37,696 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:15:37,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:37,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:37,697 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 04:15:37,698 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 04:15:37,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:15:37,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:37,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:15:37,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:37,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:37,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656448095] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:37,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:37,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-01-18 04:15:37,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515389746] [2022-01-18 04:15:37,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:37,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:15:37,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:15:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:15:37,928 INFO L87 Difference]: Start difference. First operand 26308 states and 100536 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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 04:15:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:39,589 INFO L93 Difference]: Finished difference Result 53460 states and 191246 transitions. [2022-01-18 04:15:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 04:15:39,590 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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 25 [2022-01-18 04:15:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:39,770 INFO L225 Difference]: With dead ends: 53460 [2022-01-18 04:15:39,770 INFO L226 Difference]: Without dead ends: 53392 [2022-01-18 04:15:39,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2215 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1361, Invalid=5445, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 04:15:39,771 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 513 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:39,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 377 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:15:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53392 states. [2022-01-18 04:15:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53392 to 26763. [2022-01-18 04:15:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26763 states, 26762 states have (on average 3.8272176967341753) internal successors, (102424), 26762 states have internal predecessors, (102424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26763 states to 26763 states and 102424 transitions. [2022-01-18 04:15:41,029 INFO L78 Accepts]: Start accepts. Automaton has 26763 states and 102424 transitions. Word has length 25 [2022-01-18 04:15:41,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:41,029 INFO L470 AbstractCegarLoop]: Abstraction has 26763 states and 102424 transitions. [2022-01-18 04:15:41,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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 04:15:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 26763 states and 102424 transitions. [2022-01-18 04:15:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:41,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:41,086 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:41,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-01-18 04:15:41,286 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 04:15:41,286 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:41,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:41,286 INFO L85 PathProgramCache]: Analyzing trace with hash -57991460, now seen corresponding path program 54 times [2022-01-18 04:15:41,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:41,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112737200] [2022-01-18 04:15:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:41,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:41,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:41,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112737200] [2022-01-18 04:15:41,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112737200] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:41,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152760380] [2022-01-18 04:15:41,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:15:41,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:41,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:41,341 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 04:15:41,341 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 04:15:41,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:15:41,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:41,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:41,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:41,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:41,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152760380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:41,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:41,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 04:15:41,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239980872] [2022-01-18 04:15:41,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:41,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:15:41,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:15:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:15:41,634 INFO L87 Difference]: Start difference. First operand 26763 states and 102424 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:43,030 INFO L93 Difference]: Finished difference Result 30227 states and 112282 transitions. [2022-01-18 04:15:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 04:15:43,030 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:15:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:43,132 INFO L225 Difference]: With dead ends: 30227 [2022-01-18 04:15:43,132 INFO L226 Difference]: Without dead ends: 30199 [2022-01-18 04:15:43,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=998, Invalid=3972, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 04:15:43,133 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 356 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:43,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 481 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:15:43,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30199 states. [2022-01-18 04:15:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30199 to 26742. [2022-01-18 04:15:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26742 states, 26741 states have (on average 3.828016902883213) internal successors, (102365), 26741 states have internal predecessors, (102365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26742 states to 26742 states and 102365 transitions. [2022-01-18 04:15:43,969 INFO L78 Accepts]: Start accepts. Automaton has 26742 states and 102365 transitions. Word has length 25 [2022-01-18 04:15:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:43,969 INFO L470 AbstractCegarLoop]: Abstraction has 26742 states and 102365 transitions. [2022-01-18 04:15:43,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 26742 states and 102365 transitions. [2022-01-18 04:15:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:44,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:44,018 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:44,249 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forcibly destroying the process [2022-01-18 04:15:44,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-01-18 04:15:44,250 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 04:15:44,250 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1046603232, now seen corresponding path program 55 times [2022-01-18 04:15:44,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:44,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875826021] [2022-01-18 04:15:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:44,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:44,252 WARN L724 oredProcess$PipePump]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] The stream was forcibly closed: stdIn [2022-01-18 04:15:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:44,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:44,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875826021] [2022-01-18 04:15:44,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875826021] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:44,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127603374] [2022-01-18 04:15:44,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:15:44,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:44,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:44,305 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 04:15:44,305 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 04:15:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:44,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:44,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:44,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:44,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127603374] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:44,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:44,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 04:15:44,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134328052] [2022-01-18 04:15:44,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:44,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:15:44,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:44,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:15:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:15:44,554 INFO L87 Difference]: Start difference. First operand 26742 states and 102365 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:46,147 INFO L93 Difference]: Finished difference Result 30755 states and 113595 transitions. [2022-01-18 04:15:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 04:15:46,147 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have 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 04:15:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:46,241 INFO L225 Difference]: With dead ends: 30755 [2022-01-18 04:15:46,241 INFO L226 Difference]: Without dead ends: 30743 [2022-01-18 04:15:46,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1458, Invalid=5682, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 04:15:46,242 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 381 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:46,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 434 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:15:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30743 states. [2022-01-18 04:15:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30743 to 26432. [2022-01-18 04:15:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26432 states, 26431 states have (on average 3.833907154477697) internal successors, (101334), 26431 states have internal predecessors, (101334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:47,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26432 states to 26432 states and 101334 transitions. [2022-01-18 04:15:47,139 INFO L78 Accepts]: Start accepts. Automaton has 26432 states and 101334 transitions. Word has length 25 [2022-01-18 04:15:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:47,139 INFO L470 AbstractCegarLoop]: Abstraction has 26432 states and 101334 transitions. [2022-01-18 04:15:47,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 26432 states and 101334 transitions. [2022-01-18 04:15:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:47,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:47,199 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:47,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-01-18 04:15:47,399 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 04:15:47,399 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:47,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:47,400 INFO L85 PathProgramCache]: Analyzing trace with hash -431477204, now seen corresponding path program 56 times [2022-01-18 04:15:47,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:47,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510441069] [2022-01-18 04:15:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:47,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:47,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:47,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510441069] [2022-01-18 04:15:47,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510441069] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:47,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293185893] [2022-01-18 04:15:47,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:15:47,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:47,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:47,455 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 04:15:47,456 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 04:15:47,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:15:47,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:47,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:47,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:47,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:47,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293185893] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:47,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:47,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 19 [2022-01-18 04:15:47,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535445403] [2022-01-18 04:15:47,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:47,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:15:47,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:15:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:15:47,715 INFO L87 Difference]: Start difference. First operand 26432 states and 101334 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:48,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:48,917 INFO L93 Difference]: Finished difference Result 30975 states and 114847 transitions. [2022-01-18 04:15:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 04:15:48,917 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have 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 04:15:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:49,004 INFO L225 Difference]: With dead ends: 30975 [2022-01-18 04:15:49,005 INFO L226 Difference]: Without dead ends: 30963 [2022-01-18 04:15:49,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=779, Invalid=2643, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 04:15:49,005 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 330 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:49,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 339 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:15:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30963 states. [2022-01-18 04:15:49,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30963 to 26545. [2022-01-18 04:15:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26545 states, 26544 states have (on average 3.8366109101868595) internal successors, (101839), 26544 states have internal predecessors, (101839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26545 states to 26545 states and 101839 transitions. [2022-01-18 04:15:49,806 INFO L78 Accepts]: Start accepts. Automaton has 26545 states and 101839 transitions. Word has length 25 [2022-01-18 04:15:49,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:49,806 INFO L470 AbstractCegarLoop]: Abstraction has 26545 states and 101839 transitions. [2022-01-18 04:15:49,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:49,807 INFO L276 IsEmpty]: Start isEmpty. Operand 26545 states and 101839 transitions. [2022-01-18 04:15:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:49,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:49,863 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:49,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-01-18 04:15:50,064 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 04:15:50,064 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash 115487400, now seen corresponding path program 57 times [2022-01-18 04:15:50,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664637848] [2022-01-18 04:15:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:50,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:50,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:50,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664637848] [2022-01-18 04:15:50,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664637848] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:50,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735735375] [2022-01-18 04:15:50,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:15:50,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:50,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:50,137 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 04:15:50,138 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 04:15:50,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:15:50,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:50,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:50,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:50,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:15:50,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735735375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:50,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:50,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2022-01-18 04:15:50,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831366796] [2022-01-18 04:15:50,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:50,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 04:15:50,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 04:15:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:15:50,402 INFO L87 Difference]: Start difference. First operand 26545 states and 101839 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:51,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:51,804 INFO L93 Difference]: Finished difference Result 30437 states and 112928 transitions. [2022-01-18 04:15:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 04:15:51,805 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:15:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:51,892 INFO L225 Difference]: With dead ends: 30437 [2022-01-18 04:15:51,892 INFO L226 Difference]: Without dead ends: 30425 [2022-01-18 04:15:51,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1196, Invalid=4206, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 04:15:51,893 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 308 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:51,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 439 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:15:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30425 states. [2022-01-18 04:15:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30425 to 26710. [2022-01-18 04:15:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26710 states, 26709 states have (on average 3.832640682915871) internal successors, (102366), 26709 states have internal predecessors, (102366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:52,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26710 states to 26710 states and 102366 transitions. [2022-01-18 04:15:52,724 INFO L78 Accepts]: Start accepts. Automaton has 26710 states and 102366 transitions. Word has length 25 [2022-01-18 04:15:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:52,724 INFO L470 AbstractCegarLoop]: Abstraction has 26710 states and 102366 transitions. [2022-01-18 04:15:52,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 26710 states and 102366 transitions. [2022-01-18 04:15:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:52,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:52,778 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:52,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-01-18 04:15:52,979 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 04:15:52,979 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:52,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:52,979 INFO L85 PathProgramCache]: Analyzing trace with hash -584285904, now seen corresponding path program 58 times [2022-01-18 04:15:52,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:52,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977095437] [2022-01-18 04:15:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:52,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:53,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:53,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977095437] [2022-01-18 04:15:53,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977095437] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:53,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179334198] [2022-01-18 04:15:53,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:15:53,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:53,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:53,041 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 04:15:53,042 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 04:15:53,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:15:53,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:53,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:53,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:53,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:15:53,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179334198] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:53,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:53,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-01-18 04:15:53,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626886009] [2022-01-18 04:15:53,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:53,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:15:53,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:15:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:15:53,292 INFO L87 Difference]: Start difference. First operand 26710 states and 102366 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 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 04:15:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:55,262 INFO L93 Difference]: Finished difference Result 43697 states and 157609 transitions. [2022-01-18 04:15:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 04:15:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 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 25 [2022-01-18 04:15:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:55,394 INFO L225 Difference]: With dead ends: 43697 [2022-01-18 04:15:55,395 INFO L226 Difference]: Without dead ends: 43689 [2022-01-18 04:15:55,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1542, Invalid=5264, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 04:15:55,396 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 491 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:55,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 572 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 04:15:55,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43689 states. [2022-01-18 04:15:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43689 to 26825. [2022-01-18 04:15:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26825 states, 26824 states have (on average 3.836937071279451) internal successors, (102922), 26824 states have internal predecessors, (102922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26825 states to 26825 states and 102922 transitions. [2022-01-18 04:15:56,495 INFO L78 Accepts]: Start accepts. Automaton has 26825 states and 102922 transitions. Word has length 25 [2022-01-18 04:15:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:15:56,496 INFO L470 AbstractCegarLoop]: Abstraction has 26825 states and 102922 transitions. [2022-01-18 04:15:56,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 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 04:15:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 26825 states and 102922 transitions. [2022-01-18 04:15:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:15:56,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:15:56,551 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:15:56,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-01-18 04:15:56,751 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 04:15:56,752 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:15:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:15:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 452395820, now seen corresponding path program 59 times [2022-01-18 04:15:56,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:15:56,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613400875] [2022-01-18 04:15:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:15:56,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:15:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:15:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:56,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:15:56,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613400875] [2022-01-18 04:15:56,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613400875] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:15:56,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435516197] [2022-01-18 04:15:56,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:15:56,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:15:56,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:15:56,804 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 04:15:56,804 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 04:15:56,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:15:56,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:15:56,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:15:56,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:15:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:15:57,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:15:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 04:15:57,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435516197] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:15:57,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:15:57,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-01-18 04:15:57,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63112683] [2022-01-18 04:15:57,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:15:57,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:15:57,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:15:57,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:15:57,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:15:57,274 INFO L87 Difference]: Start difference. First operand 26825 states and 102922 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:15:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:15:59,014 INFO L93 Difference]: Finished difference Result 43966 states and 158338 transitions. [2022-01-18 04:15:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 04:15:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:15:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:15:59,153 INFO L225 Difference]: With dead ends: 43966 [2022-01-18 04:15:59,153 INFO L226 Difference]: Without dead ends: 43940 [2022-01-18 04:15:59,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2447 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1604, Invalid=5536, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 04:15:59,154 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 459 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:15:59,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 487 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:15:59,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43940 states. [2022-01-18 04:15:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43940 to 26799. [2022-01-18 04:15:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26799 states, 26798 states have (on average 3.835286215389208) internal successors, (102778), 26798 states have internal predecessors, (102778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26799 states to 26799 states and 102778 transitions. [2022-01-18 04:16:00,034 INFO L78 Accepts]: Start accepts. Automaton has 26799 states and 102778 transitions. Word has length 25 [2022-01-18 04:16:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:00,034 INFO L470 AbstractCegarLoop]: Abstraction has 26799 states and 102778 transitions. [2022-01-18 04:16:00,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 26799 states and 102778 transitions. [2022-01-18 04:16:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:00,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:00,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:00,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-01-18 04:16:00,286 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 04:16:00,286 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:00,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:00,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2063114192, now seen corresponding path program 60 times [2022-01-18 04:16:00,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:00,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958858408] [2022-01-18 04:16:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:00,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:00,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:00,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958858408] [2022-01-18 04:16:00,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958858408] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:00,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132058939] [2022-01-18 04:16:00,337 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:16:00,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:00,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:00,338 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 04:16:00,338 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 04:16:00,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:16:00,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:00,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:16:00,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:00,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:00,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:00,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132058939] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:00,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:00,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 04:16:00,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870427090] [2022-01-18 04:16:00,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:00,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:16:00,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:16:00,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:16:00,638 INFO L87 Difference]: Start difference. First operand 26799 states and 102778 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:02,022 INFO L93 Difference]: Finished difference Result 32249 states and 119094 transitions. [2022-01-18 04:16:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 04:16:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have 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 04:16:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:02,131 INFO L225 Difference]: With dead ends: 32249 [2022-01-18 04:16:02,131 INFO L226 Difference]: Without dead ends: 32228 [2022-01-18 04:16:02,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=869, Invalid=3421, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 04:16:02,132 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 472 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:02,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 395 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:16:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32228 states. [2022-01-18 04:16:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32228 to 26934. [2022-01-18 04:16:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26934 states, 26933 states have (on average 3.8327702075520738) internal successors, (103228), 26933 states have internal predecessors, (103228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26934 states to 26934 states and 103228 transitions. [2022-01-18 04:16:03,016 INFO L78 Accepts]: Start accepts. Automaton has 26934 states and 103228 transitions. Word has length 25 [2022-01-18 04:16:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:03,016 INFO L470 AbstractCegarLoop]: Abstraction has 26934 states and 103228 transitions. [2022-01-18 04:16:03,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 26934 states and 103228 transitions. [2022-01-18 04:16:03,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:03,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:03,076 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:03,092 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 04:16:03,277 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 04:16:03,277 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash -958519500, now seen corresponding path program 61 times [2022-01-18 04:16:03,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:03,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826657019] [2022-01-18 04:16:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:03,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:03,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:03,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826657019] [2022-01-18 04:16:03,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826657019] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:03,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869687468] [2022-01-18 04:16:03,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:16:03,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:03,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:03,328 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 04:16:03,329 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 04:16:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:03,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:16:03,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:03,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:03,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869687468] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:03,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:03,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 04:16:03,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780085566] [2022-01-18 04:16:03,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:03,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:16:03,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:03,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:16:03,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:16:03,581 INFO L87 Difference]: Start difference. First operand 26934 states and 103228 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:05,491 INFO L93 Difference]: Finished difference Result 33621 states and 122812 transitions. [2022-01-18 04:16:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 04:16:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have 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 04:16:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:05,619 INFO L225 Difference]: With dead ends: 33621 [2022-01-18 04:16:05,619 INFO L226 Difference]: Without dead ends: 33603 [2022-01-18 04:16:05,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2357 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1505, Invalid=5635, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 04:16:05,619 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 462 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:05,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 514 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:16:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33603 states. [2022-01-18 04:16:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33603 to 26883. [2022-01-18 04:16:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26883 states, 26882 states have (on average 3.831225355256305) internal successors, (102991), 26882 states have internal predecessors, (102991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26883 states to 26883 states and 102991 transitions. [2022-01-18 04:16:06,648 INFO L78 Accepts]: Start accepts. Automaton has 26883 states and 102991 transitions. Word has length 25 [2022-01-18 04:16:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:06,648 INFO L470 AbstractCegarLoop]: Abstraction has 26883 states and 102991 transitions. [2022-01-18 04:16:06,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:06,649 INFO L276 IsEmpty]: Start isEmpty. Operand 26883 states and 102991 transitions. [2022-01-18 04:16:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:06,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:06,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:06,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-01-18 04:16:06,910 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 04:16:06,910 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:06,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash -610544284, now seen corresponding path program 62 times [2022-01-18 04:16:06,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:06,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999292228] [2022-01-18 04:16:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:06,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:06,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:06,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999292228] [2022-01-18 04:16:06,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999292228] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:06,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710669807] [2022-01-18 04:16:06,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:16:06,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:06,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:06,982 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 04:16:06,983 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 04:16:07,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:16:07,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:07,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:16:07,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:07,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:07,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710669807] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:07,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:07,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-01-18 04:16:07,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824580279] [2022-01-18 04:16:07,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:07,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:16:07,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:16:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:16:07,304 INFO L87 Difference]: Start difference. First operand 26883 states and 102991 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:08,492 INFO L93 Difference]: Finished difference Result 31067 states and 115057 transitions. [2022-01-18 04:16:08,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 04:16:08,492 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:16:08,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:08,590 INFO L225 Difference]: With dead ends: 31067 [2022-01-18 04:16:08,590 INFO L226 Difference]: Without dead ends: 30993 [2022-01-18 04:16:08,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=869, Invalid=3421, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 04:16:08,591 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 374 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:08,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 274 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:16:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30993 states. [2022-01-18 04:16:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30993 to 27772. [2022-01-18 04:16:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27772 states, 27771 states have (on average 3.8098015915883474) internal successors, (105802), 27771 states have internal predecessors, (105802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27772 states to 27772 states and 105802 transitions. [2022-01-18 04:16:09,477 INFO L78 Accepts]: Start accepts. Automaton has 27772 states and 105802 transitions. Word has length 25 [2022-01-18 04:16:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:09,477 INFO L470 AbstractCegarLoop]: Abstraction has 27772 states and 105802 transitions. [2022-01-18 04:16:09,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 27772 states and 105802 transitions. [2022-01-18 04:16:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:09,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:09,536 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:09,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-01-18 04:16:09,738 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 04:16:09,738 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:09,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash -103092820, now seen corresponding path program 63 times [2022-01-18 04:16:09,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:09,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732238897] [2022-01-18 04:16:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:09,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:09,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:09,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732238897] [2022-01-18 04:16:09,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732238897] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:09,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869571295] [2022-01-18 04:16:09,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:16:09,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:09,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:09,793 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 04:16:09,793 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 04:16:09,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:16:09,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:09,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:16:09,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:09,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:10,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869571295] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:10,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:10,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 04:16:10,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766725458] [2022-01-18 04:16:10,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:10,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:16:10,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:10,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:16:10,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:16:10,068 INFO L87 Difference]: Start difference. First operand 27772 states and 105802 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:11,648 INFO L93 Difference]: Finished difference Result 31519 states and 116453 transitions. [2022-01-18 04:16:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 04:16:11,649 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:16:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:11,756 INFO L225 Difference]: With dead ends: 31519 [2022-01-18 04:16:11,756 INFO L226 Difference]: Without dead ends: 31477 [2022-01-18 04:16:11,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1202, Invalid=4200, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 04:16:11,757 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 389 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:11,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 346 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:16:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31477 states. [2022-01-18 04:16:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31477 to 28378. [2022-01-18 04:16:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28378 states, 28377 states have (on average 3.7997674172745532) internal successors, (107826), 28377 states have internal predecessors, (107826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28378 states to 28378 states and 107826 transitions. [2022-01-18 04:16:12,678 INFO L78 Accepts]: Start accepts. Automaton has 28378 states and 107826 transitions. Word has length 25 [2022-01-18 04:16:12,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:12,678 INFO L470 AbstractCegarLoop]: Abstraction has 28378 states and 107826 transitions. [2022-01-18 04:16:12,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:12,679 INFO L276 IsEmpty]: Start isEmpty. Operand 28378 states and 107826 transitions. [2022-01-18 04:16:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:12,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:12,743 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:12,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-01-18 04:16:12,947 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 04:16:12,948 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1001501872, now seen corresponding path program 64 times [2022-01-18 04:16:12,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:12,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654698317] [2022-01-18 04:16:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:12,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:13,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:13,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654698317] [2022-01-18 04:16:13,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654698317] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:13,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976993118] [2022-01-18 04:16:13,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:16:13,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:13,003 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 04:16:13,003 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 04:16:13,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:16:13,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:13,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:16:13,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:13,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:13,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976993118] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:13,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:13,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-01-18 04:16:13,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355607893] [2022-01-18 04:16:13,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:13,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 04:16:13,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 04:16:13,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 04:16:13,281 INFO L87 Difference]: Start difference. First operand 28378 states and 107826 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:14,889 INFO L93 Difference]: Finished difference Result 31870 states and 117402 transitions. [2022-01-18 04:16:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 04:16:14,889 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have 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 04:16:14,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:14,985 INFO L225 Difference]: With dead ends: 31870 [2022-01-18 04:16:14,985 INFO L226 Difference]: Without dead ends: 31852 [2022-01-18 04:16:14,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1606, Invalid=5200, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 04:16:14,986 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 407 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:14,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 439 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:16:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31852 states. [2022-01-18 04:16:15,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31852 to 28168. [2022-01-18 04:16:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28168 states, 28167 states have (on average 3.804381013242447) internal successors, (107158), 28167 states have internal predecessors, (107158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28168 states to 28168 states and 107158 transitions. [2022-01-18 04:16:15,918 INFO L78 Accepts]: Start accepts. Automaton has 28168 states and 107158 transitions. Word has length 25 [2022-01-18 04:16:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:15,918 INFO L470 AbstractCegarLoop]: Abstraction has 28168 states and 107158 transitions. [2022-01-18 04:16:15,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 28168 states and 107158 transitions. [2022-01-18 04:16:16,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:16,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:16,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:16,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-01-18 04:16:16,373 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 04:16:16,374 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash 918492762, now seen corresponding path program 44 times [2022-01-18 04:16:16,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:16,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923505205] [2022-01-18 04:16:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:16,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:16,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:16,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923505205] [2022-01-18 04:16:16,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923505205] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:16,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348035270] [2022-01-18 04:16:16,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:16:16,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:16,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:16,404 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 04:16:16,405 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 04:16:16,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:16:16,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:16,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:16:16,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:16,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:16,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348035270] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:16,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:16,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-01-18 04:16:16,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329675697] [2022-01-18 04:16:16,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:16,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:16:16,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:16,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:16:16,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:16:16,555 INFO L87 Difference]: Start difference. First operand 28168 states and 107158 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 04:16:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:17,054 INFO L93 Difference]: Finished difference Result 46026 states and 165452 transitions. [2022-01-18 04:16:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:16:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 25 [2022-01-18 04:16:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:17,206 INFO L225 Difference]: With dead ends: 46026 [2022-01-18 04:16:17,207 INFO L226 Difference]: Without dead ends: 46019 [2022-01-18 04:16:17,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:16:17,207 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 229 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:17,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 139 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:16:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46019 states. [2022-01-18 04:16:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46019 to 32278. [2022-01-18 04:16:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32278 states, 32277 states have (on average 3.817238281128977) internal successors, (123209), 32277 states have internal predecessors, (123209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32278 states to 32278 states and 123209 transitions. [2022-01-18 04:16:18,243 INFO L78 Accepts]: Start accepts. Automaton has 32278 states and 123209 transitions. Word has length 25 [2022-01-18 04:16:18,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:18,244 INFO L470 AbstractCegarLoop]: Abstraction has 32278 states and 123209 transitions. [2022-01-18 04:16:18,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 04:16:18,244 INFO L276 IsEmpty]: Start isEmpty. Operand 32278 states and 123209 transitions. [2022-01-18 04:16:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:18,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:18,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:18,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-01-18 04:16:18,511 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 04:16:18,511 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:18,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:18,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1754769378, now seen corresponding path program 45 times [2022-01-18 04:16:18,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:18,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690821727] [2022-01-18 04:16:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:18,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:18,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690821727] [2022-01-18 04:16:18,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690821727] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201699617] [2022-01-18 04:16:18,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:16:18,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:18,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:18,546 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 04:16:18,546 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 04:16:18,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:16:18,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:18,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:16:18,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:18,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:18,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201699617] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:18,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:18,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 04:16:18,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527671867] [2022-01-18 04:16:18,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:18,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:16:18,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:18,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:16:18,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:16:18,687 INFO L87 Difference]: Start difference. First operand 32278 states and 123209 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:19,422 INFO L93 Difference]: Finished difference Result 56282 states and 204646 transitions. [2022-01-18 04:16:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 04:16:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:16:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:19,645 INFO L225 Difference]: With dead ends: 56282 [2022-01-18 04:16:19,645 INFO L226 Difference]: Without dead ends: 56282 [2022-01-18 04:16:19,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=202, Invalid=350, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:16:19,646 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 248 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:19,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 97 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:16:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56282 states. [2022-01-18 04:16:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56282 to 36061. [2022-01-18 04:16:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36061 states, 36060 states have (on average 3.8456461453133666) internal successors, (138674), 36060 states have internal predecessors, (138674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36061 states to 36061 states and 138674 transitions. [2022-01-18 04:16:20,923 INFO L78 Accepts]: Start accepts. Automaton has 36061 states and 138674 transitions. Word has length 25 [2022-01-18 04:16:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:20,923 INFO L470 AbstractCegarLoop]: Abstraction has 36061 states and 138674 transitions. [2022-01-18 04:16:20,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 36061 states and 138674 transitions. [2022-01-18 04:16:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:21,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:21,004 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:21,019 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 04:16:21,204 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 04:16:21,204 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:21,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash -234712474, now seen corresponding path program 46 times [2022-01-18 04:16:21,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:21,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209661790] [2022-01-18 04:16:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:21,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:21,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:21,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209661790] [2022-01-18 04:16:21,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209661790] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:21,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036036521] [2022-01-18 04:16:21,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:16:21,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:21,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:21,232 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 04:16:21,236 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 04:16:21,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:16:21,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:21,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:16:21,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:21,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:21,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036036521] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:21,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:21,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-18 04:16:21,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373889309] [2022-01-18 04:16:21,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:21,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:16:21,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:16:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:16:21,372 INFO L87 Difference]: Start difference. First operand 36061 states and 138674 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:22,140 INFO L93 Difference]: Finished difference Result 51397 states and 189538 transitions. [2022-01-18 04:16:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 04:16:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:16:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:22,332 INFO L225 Difference]: With dead ends: 51397 [2022-01-18 04:16:22,332 INFO L226 Difference]: Without dead ends: 51391 [2022-01-18 04:16:22,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:16:22,332 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 238 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:22,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 71 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:16:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51391 states. [2022-01-18 04:16:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51391 to 36050. [2022-01-18 04:16:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36050 states, 36049 states have (on average 3.844517184942717) internal successors, (138591), 36049 states have internal predecessors, (138591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36050 states to 36050 states and 138591 transitions. [2022-01-18 04:16:23,518 INFO L78 Accepts]: Start accepts. Automaton has 36050 states and 138591 transitions. Word has length 25 [2022-01-18 04:16:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:23,518 INFO L470 AbstractCegarLoop]: Abstraction has 36050 states and 138591 transitions. [2022-01-18 04:16:23,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 36050 states and 138591 transitions. [2022-01-18 04:16:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:23,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:23,591 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:23,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-01-18 04:16:23,792 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 04:16:23,792 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1248422464, now seen corresponding path program 47 times [2022-01-18 04:16:23,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:23,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099963785] [2022-01-18 04:16:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:23,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:23,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:23,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099963785] [2022-01-18 04:16:23,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099963785] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:23,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081601585] [2022-01-18 04:16:23,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:16:23,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:23,829 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 04:16:23,830 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 04:16:23,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:16:23,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:23,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:16:23,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:23,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:23,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081601585] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:23,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:23,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-18 04:16:23,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119306411] [2022-01-18 04:16:23,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:23,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:16:23,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:16:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:16:23,960 INFO L87 Difference]: Start difference. First operand 36050 states and 138591 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 04:16:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:24,418 INFO L93 Difference]: Finished difference Result 51468 states and 189710 transitions. [2022-01-18 04:16:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 04:16:24,419 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 25 [2022-01-18 04:16:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:24,612 INFO L225 Difference]: With dead ends: 51468 [2022-01-18 04:16:24,612 INFO L226 Difference]: Without dead ends: 51450 [2022-01-18 04:16:24,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=152, Invalid=268, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:16:24,613 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 309 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:24,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 81 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:16:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51450 states. [2022-01-18 04:16:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51450 to 36034. [2022-01-18 04:16:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36034 states, 36033 states have (on average 3.841783920295285) internal successors, (138431), 36033 states have internal predecessors, (138431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36034 states to 36034 states and 138431 transitions. [2022-01-18 04:16:26,359 INFO L78 Accepts]: Start accepts. Automaton has 36034 states and 138431 transitions. Word has length 25 [2022-01-18 04:16:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:26,359 INFO L470 AbstractCegarLoop]: Abstraction has 36034 states and 138431 transitions. [2022-01-18 04:16:26,359 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 04:16:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 36034 states and 138431 transitions. [2022-01-18 04:16:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:26,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:26,432 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:16:26,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-01-18 04:16:26,633 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 04:16:26,633 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:26,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:26,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1500473020, now seen corresponding path program 48 times [2022-01-18 04:16:26,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:26,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048051772] [2022-01-18 04:16:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:26,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:26,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:26,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048051772] [2022-01-18 04:16:26,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048051772] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:26,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494083292] [2022-01-18 04:16:26,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:16:26,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:26,664 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 04:16:26,665 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 04:16:26,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:16:26,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:26,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:16:26,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:26,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:26,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494083292] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:26,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:26,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-18 04:16:26,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396014109] [2022-01-18 04:16:26,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:26,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:16:26,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:16:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:16:26,794 INFO L87 Difference]: Start difference. First operand 36034 states and 138431 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:27,263 INFO L93 Difference]: Finished difference Result 51306 states and 189111 transitions. [2022-01-18 04:16:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 04:16:27,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:16:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:27,454 INFO L225 Difference]: With dead ends: 51306 [2022-01-18 04:16:27,454 INFO L226 Difference]: Without dead ends: 51276 [2022-01-18 04:16:27,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2022-01-18 04:16:27,455 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 309 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:27,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 79 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:16:27,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51276 states. [2022-01-18 04:16:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51276 to 36160. [2022-01-18 04:16:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36160 states, 36159 states have (on average 3.838103929865317) internal successors, (138782), 36159 states have internal predecessors, (138782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36160 states to 36160 states and 138782 transitions. [2022-01-18 04:16:28,995 INFO L78 Accepts]: Start accepts. Automaton has 36160 states and 138782 transitions. Word has length 25 [2022-01-18 04:16:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:28,996 INFO L470 AbstractCegarLoop]: Abstraction has 36160 states and 138782 transitions. [2022-01-18 04:16:28,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:28,996 INFO L276 IsEmpty]: Start isEmpty. Operand 36160 states and 138782 transitions. [2022-01-18 04:16:29,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:29,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:29,075 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 04:16:29,091 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 04:16:29,275 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 04:16:29,276 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:29,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash 485420698, now seen corresponding path program 65 times [2022-01-18 04:16:29,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:29,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264623249] [2022-01-18 04:16:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:29,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:29,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:29,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264623249] [2022-01-18 04:16:29,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264623249] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:29,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556602591] [2022-01-18 04:16:29,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:16:29,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:29,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:29,323 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 04:16:29,325 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 04:16:29,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:16:29,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:29,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:16:29,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:29,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:29,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556602591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:29,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:29,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 04:16:29,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380652986] [2022-01-18 04:16:29,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:29,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:16:29,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:16:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:16:29,543 INFO L87 Difference]: Start difference. First operand 36160 states and 138782 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 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 04:16:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:31,611 INFO L93 Difference]: Finished difference Result 78549 states and 292869 transitions. [2022-01-18 04:16:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 04:16:31,611 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 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 25 [2022-01-18 04:16:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:32,233 INFO L225 Difference]: With dead ends: 78549 [2022-01-18 04:16:32,233 INFO L226 Difference]: Without dead ends: 78487 [2022-01-18 04:16:32,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1861, Invalid=6695, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 04:16:32,234 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 562 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:32,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 309 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:16:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78487 states. [2022-01-18 04:16:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78487 to 50005. [2022-01-18 04:16:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50005 states, 50004 states have (on average 3.965042796576274) internal successors, (198268), 50004 states have internal predecessors, (198268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50005 states to 50005 states and 198268 transitions. [2022-01-18 04:16:34,099 INFO L78 Accepts]: Start accepts. Automaton has 50005 states and 198268 transitions. Word has length 25 [2022-01-18 04:16:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:34,099 INFO L470 AbstractCegarLoop]: Abstraction has 50005 states and 198268 transitions. [2022-01-18 04:16:34,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 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 04:16:34,099 INFO L276 IsEmpty]: Start isEmpty. Operand 50005 states and 198268 transitions. [2022-01-18 04:16:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:34,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:34,207 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 04:16:34,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-01-18 04:16:34,408 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 04:16:34,408 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1463978142, now seen corresponding path program 66 times [2022-01-18 04:16:34,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:34,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616608271] [2022-01-18 04:16:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:34,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:34,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:34,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616608271] [2022-01-18 04:16:34,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616608271] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:34,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416958123] [2022-01-18 04:16:34,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:16:34,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:34,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:34,457 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 04:16:34,459 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 04:16:34,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:16:34,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:34,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:16:34,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:34,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:34,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416958123] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:34,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:34,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 04:16:34,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995606029] [2022-01-18 04:16:34,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:34,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:16:34,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:34,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:16:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:16:34,694 INFO L87 Difference]: Start difference. First operand 50005 states and 198268 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 04:16:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:36,961 INFO L93 Difference]: Finished difference Result 93002 states and 342802 transitions. [2022-01-18 04:16:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 04:16:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 25 [2022-01-18 04:16:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:37,306 INFO L225 Difference]: With dead ends: 93002 [2022-01-18 04:16:37,306 INFO L226 Difference]: Without dead ends: 92967 [2022-01-18 04:16:37,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1350, Invalid=4350, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 04:16:37,307 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 501 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:37,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 387 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:16:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92967 states. [2022-01-18 04:16:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92967 to 49731. [2022-01-18 04:16:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49731 states, 49730 states have (on average 3.945968228433541) internal successors, (196233), 49730 states have internal predecessors, (196233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49731 states to 49731 states and 196233 transitions. [2022-01-18 04:16:39,683 INFO L78 Accepts]: Start accepts. Automaton has 49731 states and 196233 transitions. Word has length 25 [2022-01-18 04:16:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:39,683 INFO L470 AbstractCegarLoop]: Abstraction has 49731 states and 196233 transitions. [2022-01-18 04:16:39,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 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 04:16:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 49731 states and 196233 transitions. [2022-01-18 04:16:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:39,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:39,783 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 04:16:39,799 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 04:16:39,983 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 04:16:39,984 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash 51810674, now seen corresponding path program 67 times [2022-01-18 04:16:39,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:39,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811962701] [2022-01-18 04:16:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:39,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:40,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:40,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811962701] [2022-01-18 04:16:40,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811962701] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:40,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806936682] [2022-01-18 04:16:40,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:16:40,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:40,023 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 04:16:40,024 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 04:16:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:40,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:16:40,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:40,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:40,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806936682] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:40,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:40,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 04:16:40,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767447919] [2022-01-18 04:16:40,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:40,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:16:40,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:40,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:16:40,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:16:40,247 INFO L87 Difference]: Start difference. First operand 49731 states and 196233 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 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 04:16:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:42,423 INFO L93 Difference]: Finished difference Result 103567 states and 382759 transitions. [2022-01-18 04:16:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 04:16:42,424 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 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 25 [2022-01-18 04:16:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:42,822 INFO L225 Difference]: With dead ends: 103567 [2022-01-18 04:16:42,822 INFO L226 Difference]: Without dead ends: 103546 [2022-01-18 04:16:42,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1645 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1148, Invalid=3682, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 04:16:42,823 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 386 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:42,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 268 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:16:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103546 states. [2022-01-18 04:16:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103546 to 57964. [2022-01-18 04:16:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57964 states, 57963 states have (on average 3.9210530855890826) internal successors, (227276), 57963 states have internal predecessors, (227276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57964 states to 57964 states and 227276 transitions. [2022-01-18 04:16:45,412 INFO L78 Accepts]: Start accepts. Automaton has 57964 states and 227276 transitions. Word has length 25 [2022-01-18 04:16:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:45,412 INFO L470 AbstractCegarLoop]: Abstraction has 57964 states and 227276 transitions. [2022-01-18 04:16:45,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 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 04:16:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 57964 states and 227276 transitions. [2022-01-18 04:16:45,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:45,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:45,539 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 04:16:45,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-01-18 04:16:45,740 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 04:16:45,740 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2062622522, now seen corresponding path program 68 times [2022-01-18 04:16:45,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214593166] [2022-01-18 04:16:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:45,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:45,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214593166] [2022-01-18 04:16:45,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214593166] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191890665] [2022-01-18 04:16:45,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:16:45,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:45,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:45,778 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 04:16:45,779 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 04:16:45,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:16:45,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:45,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:16:45,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:45,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:45,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191890665] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:45,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:45,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 04:16:45,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351492834] [2022-01-18 04:16:45,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:45,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:16:45,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:16:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:16:45,999 INFO L87 Difference]: Start difference. First operand 57964 states and 227276 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 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 04:16:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:48,499 INFO L93 Difference]: Finished difference Result 108339 states and 402715 transitions. [2022-01-18 04:16:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 04:16:48,499 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 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 25 [2022-01-18 04:16:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:48,925 INFO L225 Difference]: With dead ends: 108339 [2022-01-18 04:16:48,925 INFO L226 Difference]: Without dead ends: 108304 [2022-01-18 04:16:48,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1368, Invalid=4484, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 04:16:48,926 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 461 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:48,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 357 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:16:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108304 states. [2022-01-18 04:16:51,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108304 to 61483. [2022-01-18 04:16:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61483 states, 61482 states have (on average 3.936274031423831) internal successors, (242010), 61482 states have internal predecessors, (242010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61483 states to 61483 states and 242010 transitions. [2022-01-18 04:16:51,588 INFO L78 Accepts]: Start accepts. Automaton has 61483 states and 242010 transitions. Word has length 25 [2022-01-18 04:16:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:51,589 INFO L470 AbstractCegarLoop]: Abstraction has 61483 states and 242010 transitions. [2022-01-18 04:16:51,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 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 04:16:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 61483 states and 242010 transitions. [2022-01-18 04:16:52,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:52,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:52,118 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 04:16:52,133 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 04:16:52,318 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 04:16:52,318 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:52,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:52,319 INFO L85 PathProgramCache]: Analyzing trace with hash -57319438, now seen corresponding path program 69 times [2022-01-18 04:16:52,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:52,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027713148] [2022-01-18 04:16:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:52,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:52,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:52,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027713148] [2022-01-18 04:16:52,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027713148] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:52,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046531576] [2022-01-18 04:16:52,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:16:52,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:52,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:52,356 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 04:16:52,357 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 04:16:52,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:16:52,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:52,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:16:52,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:52,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:16:52,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046531576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:52,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:52,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 04:16:52,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105774093] [2022-01-18 04:16:52,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:52,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:16:52,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:52,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:16:52,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:16:52,556 INFO L87 Difference]: Start difference. First operand 61483 states and 242010 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 04:16:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:16:54,317 INFO L93 Difference]: Finished difference Result 90947 states and 341949 transitions. [2022-01-18 04:16:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 04:16:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:16:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:16:54,654 INFO L225 Difference]: With dead ends: 90947 [2022-01-18 04:16:54,654 INFO L226 Difference]: Without dead ends: 90873 [2022-01-18 04:16:54,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1141, Invalid=4115, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 04:16:54,655 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 516 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:16:54,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 307 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:16:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90873 states. [2022-01-18 04:16:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90873 to 61176. [2022-01-18 04:16:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61176 states, 61175 states have (on average 3.928565590519003) internal successors, (240330), 61175 states have internal predecessors, (240330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:16:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61176 states to 61176 states and 240330 transitions. [2022-01-18 04:16:57,153 INFO L78 Accepts]: Start accepts. Automaton has 61176 states and 240330 transitions. Word has length 25 [2022-01-18 04:16:57,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:16:57,153 INFO L470 AbstractCegarLoop]: Abstraction has 61176 states and 240330 transitions. [2022-01-18 04:16:57,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 04:16:57,154 INFO L276 IsEmpty]: Start isEmpty. Operand 61176 states and 240330 transitions. [2022-01-18 04:16:57,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:16:57,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:16:57,282 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 04:16:57,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-01-18 04:16:57,483 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 04:16:57,483 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:16:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:16:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1807134558, now seen corresponding path program 70 times [2022-01-18 04:16:57,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:16:57,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265577180] [2022-01-18 04:16:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:16:57,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:16:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:16:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:57,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:16:57,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265577180] [2022-01-18 04:16:57,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265577180] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:16:57,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949622041] [2022-01-18 04:16:57,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:16:57,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:16:57,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:16:57,526 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 04:16:57,526 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 04:16:57,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:16:57,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:16:57,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:16:57,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:16:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:58,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:16:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:16:58,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949622041] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:16:58,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:16:58,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-01-18 04:16:58,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532295838] [2022-01-18 04:16:58,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:16:58,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:16:58,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:16:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:16:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:16:58,091 INFO L87 Difference]: Start difference. First operand 61176 states and 240330 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 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 04:17:00,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:00,530 INFO L93 Difference]: Finished difference Result 120952 states and 453261 transitions. [2022-01-18 04:17:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 04:17:00,531 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 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 25 [2022-01-18 04:17:00,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:01,851 INFO L225 Difference]: With dead ends: 120952 [2022-01-18 04:17:01,852 INFO L226 Difference]: Without dead ends: 120904 [2022-01-18 04:17:01,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3772 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1936, Invalid=7570, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 04:17:01,853 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 718 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:01,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 314 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:17:02,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120904 states. [2022-01-18 04:17:04,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120904 to 63226. [2022-01-18 04:17:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63226 states, 63225 states have (on average 3.9427599841834717) internal successors, (249281), 63225 states have internal predecessors, (249281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63226 states to 63226 states and 249281 transitions. [2022-01-18 04:17:05,054 INFO L78 Accepts]: Start accepts. Automaton has 63226 states and 249281 transitions. Word has length 25 [2022-01-18 04:17:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:05,054 INFO L470 AbstractCegarLoop]: Abstraction has 63226 states and 249281 transitions. [2022-01-18 04:17:05,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 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 04:17:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 63226 states and 249281 transitions. [2022-01-18 04:17:05,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:05,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:05,200 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 04:17:05,215 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 04:17:05,400 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 04:17:05,400 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1509275294, now seen corresponding path program 71 times [2022-01-18 04:17:05,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:05,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115418181] [2022-01-18 04:17:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:05,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:05,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:05,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115418181] [2022-01-18 04:17:05,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115418181] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:05,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625375978] [2022-01-18 04:17:05,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:17:05,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:05,450 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 04:17:05,451 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 04:17:05,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:17:05,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:17:05,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:05,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:05,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:05,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625375978] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:05,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:05,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-01-18 04:17:05,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030817487] [2022-01-18 04:17:05,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:05,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:17:05,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:17:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:17:05,675 INFO L87 Difference]: Start difference. First operand 63226 states and 249281 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 04:17:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:08,285 INFO L93 Difference]: Finished difference Result 135446 states and 504775 transitions. [2022-01-18 04:17:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 04:17:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 25 [2022-01-18 04:17:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:08,879 INFO L225 Difference]: With dead ends: 135446 [2022-01-18 04:17:08,879 INFO L226 Difference]: Without dead ends: 135446 [2022-01-18 04:17:08,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1296, Invalid=4404, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 04:17:08,879 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 742 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:08,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 315 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:17:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135446 states. [2022-01-18 04:17:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135446 to 63555. [2022-01-18 04:17:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63555 states, 63554 states have (on average 3.9406961009535197) internal successors, (250447), 63554 states have internal predecessors, (250447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63555 states to 63555 states and 250447 transitions. [2022-01-18 04:17:11,969 INFO L78 Accepts]: Start accepts. Automaton has 63555 states and 250447 transitions. Word has length 25 [2022-01-18 04:17:11,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:11,969 INFO L470 AbstractCegarLoop]: Abstraction has 63555 states and 250447 transitions. [2022-01-18 04:17:11,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 04:17:11,969 INFO L276 IsEmpty]: Start isEmpty. Operand 63555 states and 250447 transitions. [2022-01-18 04:17:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:12,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:12,128 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 04:17:12,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-01-18 04:17:12,328 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 04:17:12,328 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash 513443238, now seen corresponding path program 72 times [2022-01-18 04:17:12,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488007415] [2022-01-18 04:17:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:12,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:12,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488007415] [2022-01-18 04:17:12,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488007415] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112007086] [2022-01-18 04:17:12,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:17:12,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:12,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:12,372 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 04:17:12,373 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 04:17:12,393 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:17:12,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:17:12,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:12,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:12,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:17:12,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112007086] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:12,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:12,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-01-18 04:17:12,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113622071] [2022-01-18 04:17:12,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:12,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:17:12,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:17:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:17:12,598 INFO L87 Difference]: Start difference. First operand 63555 states and 250447 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:15,396 INFO L93 Difference]: Finished difference Result 96243 states and 362512 transitions. [2022-01-18 04:17:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 04:17:15,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have 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 04:17:15,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:15,769 INFO L225 Difference]: With dead ends: 96243 [2022-01-18 04:17:15,770 INFO L226 Difference]: Without dead ends: 96195 [2022-01-18 04:17:15,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2241, Invalid=8679, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 04:17:15,771 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 660 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:15,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 339 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:17:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96195 states. [2022-01-18 04:17:18,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96195 to 63623. [2022-01-18 04:17:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63623 states, 63622 states have (on average 3.940508000377228) internal successors, (250703), 63622 states have internal predecessors, (250703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63623 states to 63623 states and 250703 transitions. [2022-01-18 04:17:18,386 INFO L78 Accepts]: Start accepts. Automaton has 63623 states and 250703 transitions. Word has length 25 [2022-01-18 04:17:18,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:18,386 INFO L470 AbstractCegarLoop]: Abstraction has 63623 states and 250703 transitions. [2022-01-18 04:17:18,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:18,387 INFO L276 IsEmpty]: Start isEmpty. Operand 63623 states and 250703 transitions. [2022-01-18 04:17:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:18,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:18,523 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 04:17:18,538 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 04:17:18,723 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 04:17:18,724 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1814621222, now seen corresponding path program 73 times [2022-01-18 04:17:18,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:18,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455869108] [2022-01-18 04:17:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:18,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:18,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:18,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455869108] [2022-01-18 04:17:18,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455869108] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:18,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505370448] [2022-01-18 04:17:18,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:17:18,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:18,768 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 04:17:18,768 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 04:17:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:18,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:18,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:18,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:17:19,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505370448] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:19,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:19,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-01-18 04:17:19,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851061856] [2022-01-18 04:17:19,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:19,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:17:19,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:17:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:17:19,018 INFO L87 Difference]: Start difference. First operand 63623 states and 250703 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 04:17:21,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:21,466 INFO L93 Difference]: Finished difference Result 94137 states and 356340 transitions. [2022-01-18 04:17:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 04:17:21,467 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 25 [2022-01-18 04:17:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:21,834 INFO L225 Difference]: With dead ends: 94137 [2022-01-18 04:17:21,834 INFO L226 Difference]: Without dead ends: 94071 [2022-01-18 04:17:21,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1628, Invalid=5854, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 04:17:21,835 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 891 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:21,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 219 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:17:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94071 states. [2022-01-18 04:17:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94071 to 63547. [2022-01-18 04:17:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63547 states, 63546 states have (on average 3.9406256884776383) internal successors, (250411), 63546 states have internal predecessors, (250411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63547 states to 63547 states and 250411 transitions. [2022-01-18 04:17:24,381 INFO L78 Accepts]: Start accepts. Automaton has 63547 states and 250411 transitions. Word has length 25 [2022-01-18 04:17:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:24,381 INFO L470 AbstractCegarLoop]: Abstraction has 63547 states and 250411 transitions. [2022-01-18 04:17:24,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 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 04:17:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 63547 states and 250411 transitions. [2022-01-18 04:17:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:24,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:24,525 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 04:17:24,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-01-18 04:17:24,737 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 04:17:24,737 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:24,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1816243242, now seen corresponding path program 74 times [2022-01-18 04:17:24,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:24,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363032324] [2022-01-18 04:17:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:24,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:24,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363032324] [2022-01-18 04:17:24,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363032324] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:24,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140511734] [2022-01-18 04:17:24,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:17:24,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:24,792 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 04:17:24,819 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 04:17:24,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:17:24,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:17:24,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:24,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:24,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:25,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140511734] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:25,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:25,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-01-18 04:17:25,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481220698] [2022-01-18 04:17:25,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:25,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:17:25,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:17:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:17:25,032 INFO L87 Difference]: Start difference. First operand 63547 states and 250411 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 04:17:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:27,456 INFO L93 Difference]: Finished difference Result 137762 states and 514692 transitions. [2022-01-18 04:17:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 04:17:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 25 [2022-01-18 04:17:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:28,582 INFO L225 Difference]: With dead ends: 137762 [2022-01-18 04:17:28,582 INFO L226 Difference]: Without dead ends: 137762 [2022-01-18 04:17:28,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1264, Invalid=4286, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 04:17:28,583 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 653 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:28,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 262 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:17:28,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137762 states. [2022-01-18 04:17:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137762 to 63770. [2022-01-18 04:17:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63770 states, 63769 states have (on average 3.9446753124558955) internal successors, (251548), 63769 states have internal predecessors, (251548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63770 states to 63770 states and 251548 transitions. [2022-01-18 04:17:31,635 INFO L78 Accepts]: Start accepts. Automaton has 63770 states and 251548 transitions. Word has length 25 [2022-01-18 04:17:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:31,635 INFO L470 AbstractCegarLoop]: Abstraction has 63770 states and 251548 transitions. [2022-01-18 04:17:31,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 04:17:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 63770 states and 251548 transitions. [2022-01-18 04:17:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:31,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:31,781 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 04:17:31,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-01-18 04:17:31,982 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 04:17:31,982 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:31,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:31,982 INFO L85 PathProgramCache]: Analyzing trace with hash -303698718, now seen corresponding path program 75 times [2022-01-18 04:17:31,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:31,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643854416] [2022-01-18 04:17:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:31,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:32,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:32,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643854416] [2022-01-18 04:17:32,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643854416] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:32,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178998179] [2022-01-18 04:17:32,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:17:32,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:32,040 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 04:17:32,041 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 04:17:32,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:17:32,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:17:32,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:32,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:32,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:32,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178998179] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:32,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:32,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-01-18 04:17:32,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904964040] [2022-01-18 04:17:32,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:32,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:17:32,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:17:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:17:32,253 INFO L87 Difference]: Start difference. First operand 63770 states and 251548 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 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 04:17:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:34,707 INFO L93 Difference]: Finished difference Result 123310 states and 464602 transitions. [2022-01-18 04:17:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 04:17:34,707 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 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 25 [2022-01-18 04:17:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:35,280 INFO L225 Difference]: With dead ends: 123310 [2022-01-18 04:17:35,280 INFO L226 Difference]: Without dead ends: 123250 [2022-01-18 04:17:35,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2033 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1258, Invalid=4442, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 04:17:35,281 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 642 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:35,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 262 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:17:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123250 states. [2022-01-18 04:17:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123250 to 63769. [2022-01-18 04:17:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63769 states, 63768 states have (on average 3.9440471709948564) internal successors, (251504), 63768 states have internal predecessors, (251504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63769 states to 63769 states and 251504 transitions. [2022-01-18 04:17:38,283 INFO L78 Accepts]: Start accepts. Automaton has 63769 states and 251504 transitions. Word has length 25 [2022-01-18 04:17:38,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:38,283 INFO L470 AbstractCegarLoop]: Abstraction has 63769 states and 251504 transitions. [2022-01-18 04:17:38,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 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 04:17:38,283 INFO L276 IsEmpty]: Start isEmpty. Operand 63769 states and 251504 transitions. [2022-01-18 04:17:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:38,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:38,427 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 04:17:38,442 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 04:17:38,628 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 04:17:38,628 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1245847424, now seen corresponding path program 76 times [2022-01-18 04:17:38,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:38,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854966533] [2022-01-18 04:17:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:38,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:38,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:38,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854966533] [2022-01-18 04:17:38,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854966533] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:38,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91589492] [2022-01-18 04:17:38,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:17:38,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:38,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:38,678 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 04:17:38,679 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 04:17:38,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:17:38,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:17:38,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:38,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:38,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:38,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91589492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:38,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:38,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-01-18 04:17:38,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672835219] [2022-01-18 04:17:38,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:38,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:17:38,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:17:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:17:38,940 INFO L87 Difference]: Start difference. First operand 63769 states and 251504 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:41,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:41,603 INFO L93 Difference]: Finished difference Result 88493 states and 335698 transitions. [2022-01-18 04:17:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 04:17:41,603 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have 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 04:17:41,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:41,944 INFO L225 Difference]: With dead ends: 88493 [2022-01-18 04:17:41,944 INFO L226 Difference]: Without dead ends: 88457 [2022-01-18 04:17:41,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3537 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1932, Invalid=7968, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 04:17:41,945 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 623 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:41,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 326 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:17:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88457 states. [2022-01-18 04:17:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88457 to 63911. [2022-01-18 04:17:44,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63911 states, 63910 states have (on average 3.944656548271006) internal successors, (252103), 63910 states have internal predecessors, (252103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63911 states to 63911 states and 252103 transitions. [2022-01-18 04:17:44,486 INFO L78 Accepts]: Start accepts. Automaton has 63911 states and 252103 transitions. Word has length 25 [2022-01-18 04:17:44,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:44,486 INFO L470 AbstractCegarLoop]: Abstraction has 63911 states and 252103 transitions. [2022-01-18 04:17:44,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 63911 states and 252103 transitions. [2022-01-18 04:17:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:44,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:44,629 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 04:17:44,644 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 04:17:44,829 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 04:17:44,829 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:44,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:44,829 INFO L85 PathProgramCache]: Analyzing trace with hash 55330560, now seen corresponding path program 77 times [2022-01-18 04:17:44,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:44,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189785205] [2022-01-18 04:17:44,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:44,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:44,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:44,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189785205] [2022-01-18 04:17:44,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189785205] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:44,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705611084] [2022-01-18 04:17:44,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:17:44,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:44,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:44,878 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 04:17:44,878 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 04:17:44,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:17:44,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:17:44,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:44,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:45,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:45,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705611084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:45,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:45,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-01-18 04:17:45,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136883823] [2022-01-18 04:17:45,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:45,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:17:45,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:17:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:17:45,153 INFO L87 Difference]: Start difference. First operand 63911 states and 252103 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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 04:17:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:47,410 INFO L93 Difference]: Finished difference Result 86728 states and 330555 transitions. [2022-01-18 04:17:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 04:17:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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 25 [2022-01-18 04:17:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:47,768 INFO L225 Difference]: With dead ends: 86728 [2022-01-18 04:17:47,768 INFO L226 Difference]: Without dead ends: 86688 [2022-01-18 04:17:47,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1309, Invalid=5011, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 04:17:47,769 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 598 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:47,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 235 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:17:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86688 states. [2022-01-18 04:17:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86688 to 63871. [2022-01-18 04:17:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63871 states, 63870 states have (on average 3.944559260998904) internal successors, (251939), 63870 states have internal predecessors, (251939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63871 states to 63871 states and 251939 transitions. [2022-01-18 04:17:50,285 INFO L78 Accepts]: Start accepts. Automaton has 63871 states and 251939 transitions. Word has length 25 [2022-01-18 04:17:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:50,285 INFO L470 AbstractCegarLoop]: Abstraction has 63871 states and 251939 transitions. [2022-01-18 04:17:50,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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 04:17:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 63871 states and 251939 transitions. [2022-01-18 04:17:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:50,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:50,431 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 04:17:50,452 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 04:17:50,651 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 04:17:50,652 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1491085450, now seen corresponding path program 78 times [2022-01-18 04:17:50,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:50,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168197160] [2022-01-18 04:17:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:50,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:50,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:50,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168197160] [2022-01-18 04:17:50,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168197160] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:50,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333406809] [2022-01-18 04:17:50,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:17:50,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:50,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:50,692 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 04:17:50,693 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 04:17:50,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:17:50,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:17:50,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:50,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:50,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:50,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333406809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:50,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:50,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-01-18 04:17:50,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552216316] [2022-01-18 04:17:50,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:50,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:17:50,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:50,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:17:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:17:50,945 INFO L87 Difference]: Start difference. First operand 63871 states and 251939 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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 04:17:54,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:17:54,306 INFO L93 Difference]: Finished difference Result 107910 states and 409252 transitions. [2022-01-18 04:17:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 04:17:54,307 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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 25 [2022-01-18 04:17:54,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:17:54,753 INFO L225 Difference]: With dead ends: 107910 [2022-01-18 04:17:54,753 INFO L226 Difference]: Without dead ends: 107812 [2022-01-18 04:17:54,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5267 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2618, Invalid=11662, Unknown=0, NotChecked=0, Total=14280 [2022-01-18 04:17:54,754 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 698 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:17:54,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 490 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:17:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107812 states. [2022-01-18 04:17:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107812 to 63845. [2022-01-18 04:17:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63845 states, 63844 states have (on average 3.944849946745191) internal successors, (251855), 63844 states have internal predecessors, (251855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:17:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63845 states to 63845 states and 251855 transitions. [2022-01-18 04:17:57,612 INFO L78 Accepts]: Start accepts. Automaton has 63845 states and 251855 transitions. Word has length 25 [2022-01-18 04:17:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:17:57,612 INFO L470 AbstractCegarLoop]: Abstraction has 63845 states and 251855 transitions. [2022-01-18 04:17:57,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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 04:17:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 63845 states and 251855 transitions. [2022-01-18 04:17:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:17:57,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:17:57,758 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 04:17:57,773 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 04:17:57,963 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 04:17:57,963 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:17:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:17:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1039857270, now seen corresponding path program 79 times [2022-01-18 04:17:57,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:17:57,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837987183] [2022-01-18 04:17:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:17:57,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:17:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:58,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:17:58,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837987183] [2022-01-18 04:17:58,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837987183] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:17:58,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464765149] [2022-01-18 04:17:58,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:17:58,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:17:58,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:17:58,002 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 04:17:58,003 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 04:17:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:17:58,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:17:58,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:17:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:58,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:17:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:17:58,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464765149] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:17:58,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:17:58,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-01-18 04:17:58,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822082619] [2022-01-18 04:17:58,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:17:58,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 04:17:58,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:17:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 04:17:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-01-18 04:17:58,256 INFO L87 Difference]: Start difference. First operand 63845 states and 251855 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 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 04:18:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:18:02,820 INFO L93 Difference]: Finished difference Result 181519 states and 684641 transitions. [2022-01-18 04:18:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 04:18:02,835 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 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 25 [2022-01-18 04:18:02,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:18:03,746 INFO L225 Difference]: With dead ends: 181519 [2022-01-18 04:18:03,746 INFO L226 Difference]: Without dead ends: 181498 [2022-01-18 04:18:03,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6576 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3247, Invalid=12503, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 04:18:03,747 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 853 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:18:03,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 537 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:18:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181498 states. [2022-01-18 04:18:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181498 to 75605. [2022-01-18 04:18:07,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75605 states, 75604 states have (on average 3.9743135283847417) internal successors, (300474), 75604 states have internal predecessors, (300474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:18:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75605 states to 75605 states and 300474 transitions. [2022-01-18 04:18:08,255 INFO L78 Accepts]: Start accepts. Automaton has 75605 states and 300474 transitions. Word has length 25 [2022-01-18 04:18:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:18:08,255 INFO L470 AbstractCegarLoop]: Abstraction has 75605 states and 300474 transitions. [2022-01-18 04:18:08,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 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 04:18:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 75605 states and 300474 transitions. [2022-01-18 04:18:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:18:08,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:18:08,460 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 04:18:08,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-01-18 04:18:08,660 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 04:18:08,660 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:18:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:18:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1080084690, now seen corresponding path program 80 times [2022-01-18 04:18:08,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:18:08,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548859993] [2022-01-18 04:18:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:18:08,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:18:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:18:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:08,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:18:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548859993] [2022-01-18 04:18:08,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548859993] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:18:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348994030] [2022-01-18 04:18:08,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:18:08,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:18:08,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:18:08,698 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 04:18:08,705 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 04:18:08,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:18:08,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:18:08,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:18:08,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:18:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:08,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:18:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:08,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348994030] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:18:08,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:18:08,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-01-18 04:18:08,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997619271] [2022-01-18 04:18:08,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:18:08,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 04:18:08,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:18:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 04:18:08,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-01-18 04:18:08,981 INFO L87 Difference]: Start difference. First operand 75605 states and 300474 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 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 04:18:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:18:12,892 INFO L93 Difference]: Finished difference Result 163775 states and 621048 transitions. [2022-01-18 04:18:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 04:18:12,893 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 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 25 [2022-01-18 04:18:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:18:13,616 INFO L225 Difference]: With dead ends: 163775 [2022-01-18 04:18:13,616 INFO L226 Difference]: Without dead ends: 163739 [2022-01-18 04:18:13,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6717 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3256, Invalid=13000, Unknown=0, NotChecked=0, Total=16256 [2022-01-18 04:18:13,617 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1002 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:18:13,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 410 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:18:13,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163739 states. [2022-01-18 04:18:17,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163739 to 75403. [2022-01-18 04:18:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75403 states, 75402 states have (on average 3.9706904326145196) internal successors, (299398), 75402 states have internal predecessors, (299398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:18:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75403 states to 75403 states and 299398 transitions. [2022-01-18 04:18:17,815 INFO L78 Accepts]: Start accepts. Automaton has 75403 states and 299398 transitions. Word has length 25 [2022-01-18 04:18:17,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:18:17,815 INFO L470 AbstractCegarLoop]: Abstraction has 75403 states and 299398 transitions. [2022-01-18 04:18:17,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 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 04:18:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 75403 states and 299398 transitions. [2022-01-18 04:18:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:18:17,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:18:17,986 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 04:18:18,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-01-18 04:18:18,186 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 04:18:18,187 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:18:18,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:18:18,187 INFO L85 PathProgramCache]: Analyzing trace with hash 664279316, now seen corresponding path program 81 times [2022-01-18 04:18:18,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:18:18,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134803083] [2022-01-18 04:18:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:18:18,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:18:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:18:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:18,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:18:18,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134803083] [2022-01-18 04:18:18,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134803083] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:18:18,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130094365] [2022-01-18 04:18:18,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:18:18,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:18:18,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:18:18,227 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 04:18:18,227 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 04:18:18,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:18:18,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:18:18,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:18:18,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:18:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:18,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:18:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:18,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130094365] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:18:18,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:18:18,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-01-18 04:18:18,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204785783] [2022-01-18 04:18:18,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:18:18,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 04:18:18,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:18:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 04:18:18,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-01-18 04:18:18,462 INFO L87 Difference]: Start difference. First operand 75403 states and 299398 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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 04:18:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:18:22,164 INFO L93 Difference]: Finished difference Result 149751 states and 566058 transitions. [2022-01-18 04:18:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 04:18:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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 25 [2022-01-18 04:18:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:18:23,449 INFO L225 Difference]: With dead ends: 149751 [2022-01-18 04:18:23,449 INFO L226 Difference]: Without dead ends: 149621 [2022-01-18 04:18:23,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5792 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2873, Invalid=12133, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 04:18:23,450 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 975 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:18:23,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 468 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 04:18:23,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149621 states. [2022-01-18 04:18:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149621 to 75956. [2022-01-18 04:18:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75956 states, 75955 states have (on average 3.971311961029557) internal successors, (301641), 75955 states have internal predecessors, (301641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:18:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75956 states to 75956 states and 301641 transitions. [2022-01-18 04:18:27,107 INFO L78 Accepts]: Start accepts. Automaton has 75956 states and 301641 transitions. Word has length 25 [2022-01-18 04:18:27,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:18:27,107 INFO L470 AbstractCegarLoop]: Abstraction has 75956 states and 301641 transitions. [2022-01-18 04:18:27,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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 04:18:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 75956 states and 301641 transitions. [2022-01-18 04:18:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:18:27,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:18:27,278 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 04:18:27,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-01-18 04:18:27,478 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 04:18:27,478 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:18:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:18:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1347852514, now seen corresponding path program 82 times [2022-01-18 04:18:27,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:18:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208980139] [2022-01-18 04:18:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:18:27,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:18:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:18:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:27,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:18:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208980139] [2022-01-18 04:18:27,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208980139] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:18:27,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843848230] [2022-01-18 04:18:27,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:18:27,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:18:27,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:18:27,525 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 04:18:27,526 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 04:18:27,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:18:27,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:18:27,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 04:18:27,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:18:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:27,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:18:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:28,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843848230] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:18:28,249 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:18:28,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-01-18 04:18:28,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161147052] [2022-01-18 04:18:28,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:18:28,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:18:28,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:18:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:18:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:18:28,249 INFO L87 Difference]: Start difference. First operand 75956 states and 301641 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 04:18:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:18:31,932 INFO L93 Difference]: Finished difference Result 168318 states and 641421 transitions. [2022-01-18 04:18:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 04:18:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 25 [2022-01-18 04:18:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:18:32,759 INFO L225 Difference]: With dead ends: 168318 [2022-01-18 04:18:32,759 INFO L226 Difference]: Without dead ends: 168297 [2022-01-18 04:18:32,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2102, Invalid=7404, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 04:18:32,760 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 636 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:18:32,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 564 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:18:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168297 states. [2022-01-18 04:18:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168297 to 104459. [2022-01-18 04:18:36,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104459 states, 104458 states have (on average 4.030806639989278) internal successors, (421050), 104458 states have internal predecessors, (421050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:18:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104459 states to 104459 states and 421050 transitions. [2022-01-18 04:18:37,402 INFO L78 Accepts]: Start accepts. Automaton has 104459 states and 421050 transitions. Word has length 25 [2022-01-18 04:18:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:18:37,402 INFO L470 AbstractCegarLoop]: Abstraction has 104459 states and 421050 transitions. [2022-01-18 04:18:37,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 04:18:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 104459 states and 421050 transitions. [2022-01-18 04:18:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:18:37,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:18:37,622 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:18:37,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-01-18 04:18:37,822 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 04:18:37,823 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:18:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:18:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1006145678, now seen corresponding path program 11 times [2022-01-18 04:18:37,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:18:37,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446952460] [2022-01-18 04:18:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:18:37,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:18:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:18:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:37,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:18:37,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446952460] [2022-01-18 04:18:37,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446952460] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:18:37,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455785375] [2022-01-18 04:18:37,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:18:37,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:18:37,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:18:37,865 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 04:18:37,865 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 04:18:37,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 04:18:37,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:18:37,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:18:37,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:18:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:38,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:18:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:38,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455785375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:18:38,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:18:38,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 04:18:38,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132076121] [2022-01-18 04:18:38,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:18:38,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 04:18:38,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:18:38,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 04:18:38,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:18:38,089 INFO L87 Difference]: Start difference. First operand 104459 states and 421050 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 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 04:18:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:18:39,903 INFO L93 Difference]: Finished difference Result 105638 states and 424069 transitions. [2022-01-18 04:18:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 04:18:39,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 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 25 [2022-01-18 04:18:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:18:40,400 INFO L225 Difference]: With dead ends: 105638 [2022-01-18 04:18:40,400 INFO L226 Difference]: Without dead ends: 105638 [2022-01-18 04:18:40,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=512, Invalid=1840, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 04:18:40,400 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 195 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:18:40,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 305 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:18:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105638 states. [2022-01-18 04:18:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105638 to 104585. [2022-01-18 04:18:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104585 states, 104584 states have (on average 4.02970817715903) internal successors, (421443), 104584 states have internal predecessors, (421443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:18:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104585 states to 104585 states and 421443 transitions. [2022-01-18 04:18:44,452 INFO L78 Accepts]: Start accepts. Automaton has 104585 states and 421443 transitions. Word has length 25 [2022-01-18 04:18:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:18:44,453 INFO L470 AbstractCegarLoop]: Abstraction has 104585 states and 421443 transitions. [2022-01-18 04:18:44,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 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 04:18:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 104585 states and 421443 transitions. [2022-01-18 04:18:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:18:44,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:18:44,704 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:18:44,720 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 04:18:44,905 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 04:18:44,905 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:18:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:18:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -122090578, now seen corresponding path program 12 times [2022-01-18 04:18:44,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:18:44,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171204055] [2022-01-18 04:18:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:18:44,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:18:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:18:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:44,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:18:44,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171204055] [2022-01-18 04:18:44,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171204055] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:18:44,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157853969] [2022-01-18 04:18:44,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:18:44,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:18:44,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:18:44,943 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:18:44,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-18 04:18:44,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:18:44,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:18:44,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:18:44,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:18:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:45,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:18:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:18:45,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157853969] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:18:45,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:18:45,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-01-18 04:18:45,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969475325] [2022-01-18 04:18:45,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:18:45,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:18:45,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:18:45,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:18:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:18:45,071 INFO L87 Difference]: Start difference. First operand 104585 states and 421443 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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 04:18:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:18:47,250 INFO L93 Difference]: Finished difference Result 162573 states and 627930 transitions. [2022-01-18 04:18:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 04:18:47,250 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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 04:18:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:18:48,725 INFO L225 Difference]: With dead ends: 162573 [2022-01-18 04:18:48,725 INFO L226 Difference]: Without dead ends: 162547 [2022-01-18 04:18:48,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2022-01-18 04:18:48,726 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 430 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:18:48,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 70 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:18:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162547 states. [2022-01-18 04:18:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162547 to 121240. [2022-01-18 04:18:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121240 states, 121239 states have (on average 4.057093839441104) internal successors, (491878), 121239 states have internal predecessors, (491878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:18:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121240 states to 121240 states and 491878 transitions. [2022-01-18 04:18:53,490 INFO L78 Accepts]: Start accepts. Automaton has 121240 states and 491878 transitions. Word has length 25 [2022-01-18 04:18:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:18:53,490 INFO L470 AbstractCegarLoop]: Abstraction has 121240 states and 491878 transitions. [2022-01-18 04:18:53,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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 04:18:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 121240 states and 491878 transitions. [2022-01-18 04:18:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:18:53,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:18:53,749 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:18:53,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-01-18 04:18:53,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:18:53,949 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:18:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:18:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1728438866, now seen corresponding path program 13 times [2022-01-18 04:18:53,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:18:53,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557785400] [2022-01-18 04:18:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:18:53,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:18:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:18:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:18:53,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:18:53,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557785400] [2022-01-18 04:18:53,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557785400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:18:53,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029130294] [2022-01-18 04:18:53,980 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:18:53,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:18:53,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:18:53,981 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:18:53,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-18 04:18:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:18:54,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:18:54,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:18:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:18:54,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:18:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:18:54,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029130294] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:18:54,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:18:54,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-01-18 04:18:54,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813675572] [2022-01-18 04:18:54,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:18:54,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:18:54,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:18:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:18:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:18:54,143 INFO L87 Difference]: Start difference. First operand 121240 states and 491878 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 04:18:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:18:56,026 INFO L93 Difference]: Finished difference Result 180290 states and 687196 transitions. [2022-01-18 04:18:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 04:18:56,027 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 25 [2022-01-18 04:18:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:18:57,380 INFO L225 Difference]: With dead ends: 180290 [2022-01-18 04:18:57,380 INFO L226 Difference]: Without dead ends: 180290 [2022-01-18 04:18:57,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=202, Invalid=350, Unknown=0, NotChecked=0, Total=552 [2022-01-18 04:18:57,380 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 266 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:18:57,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 85 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:18:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180290 states. [2022-01-18 04:19:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180290 to 121089. [2022-01-18 04:19:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121089 states, 121088 states have (on average 4.055810650105708) internal successors, (491110), 121088 states have internal predecessors, (491110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:02,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121089 states to 121089 states and 491110 transitions. [2022-01-18 04:19:02,449 INFO L78 Accepts]: Start accepts. Automaton has 121089 states and 491110 transitions. Word has length 25 [2022-01-18 04:19:02,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:19:02,449 INFO L470 AbstractCegarLoop]: Abstraction has 121089 states and 491110 transitions. [2022-01-18 04:19:02,449 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 04:19:02,449 INFO L276 IsEmpty]: Start isEmpty. Operand 121089 states and 491110 transitions. [2022-01-18 04:19:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:19:02,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:19:02,713 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:19:02,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-01-18 04:19:02,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:19:02,914 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:19:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:19:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1422204246, now seen corresponding path program 14 times [2022-01-18 04:19:02,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:19:02,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741732529] [2022-01-18 04:19:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:19:02,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:19:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:19:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:02,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:19:02,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741732529] [2022-01-18 04:19:02,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741732529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:19:02,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602345222] [2022-01-18 04:19:02,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:19:02,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:19:02,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:19:02,945 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:19:02,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-18 04:19:02,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:19:02,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:19:02,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:19:02,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:19:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:19:03,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:19:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:03,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602345222] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:19:03,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:19:03,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 14 [2022-01-18 04:19:03,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35332349] [2022-01-18 04:19:03,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:19:03,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:19:03,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:19:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:19:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:19:03,182 INFO L87 Difference]: Start difference. First operand 121089 states and 491110 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:19:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:19:05,073 INFO L93 Difference]: Finished difference Result 121826 states and 492931 transitions. [2022-01-18 04:19:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 04:19:05,073 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 25 [2022-01-18 04:19:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:19:05,664 INFO L225 Difference]: With dead ends: 121826 [2022-01-18 04:19:05,664 INFO L226 Difference]: Without dead ends: 121812 [2022-01-18 04:19:05,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1496, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 04:19:05,664 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 193 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:19:05,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 182 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:19:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121812 states. [2022-01-18 04:19:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121812 to 121089. [2022-01-18 04:19:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121089 states, 121088 states have (on average 4.055794133192389) internal successors, (491108), 121088 states have internal predecessors, (491108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121089 states to 121089 states and 491108 transitions. [2022-01-18 04:19:09,986 INFO L78 Accepts]: Start accepts. Automaton has 121089 states and 491108 transitions. Word has length 25 [2022-01-18 04:19:09,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:19:09,986 INFO L470 AbstractCegarLoop]: Abstraction has 121089 states and 491108 transitions. [2022-01-18 04:19:09,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 04:19:09,986 INFO L276 IsEmpty]: Start isEmpty. Operand 121089 states and 491108 transitions. [2022-01-18 04:19:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:19:10,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:19:10,252 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:19:10,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-01-18 04:19:10,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-01-18 04:19:10,453 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:19:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:19:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1527450058, now seen corresponding path program 15 times [2022-01-18 04:19:10,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:19:10,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355103139] [2022-01-18 04:19:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:19:10,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:19:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:19:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:10,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:19:10,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355103139] [2022-01-18 04:19:10,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355103139] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:19:10,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334114501] [2022-01-18 04:19:10,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:19:10,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:19:10,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:19:10,489 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:19:10,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-01-18 04:19:10,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 04:19:10,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:19:10,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:19:10,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:19:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:10,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:19:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:10,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334114501] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:19:10,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:19:10,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-01-18 04:19:10,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468460971] [2022-01-18 04:19:10,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:19:10,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:19:10,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:19:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:19:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:19:10,637 INFO L87 Difference]: Start difference. First operand 121089 states and 491108 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:12,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:19:12,637 INFO L93 Difference]: Finished difference Result 187193 states and 723794 transitions. [2022-01-18 04:19:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:19:12,638 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:19:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:19:13,560 INFO L225 Difference]: With dead ends: 187193 [2022-01-18 04:19:13,560 INFO L226 Difference]: Without dead ends: 187186 [2022-01-18 04:19:13,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:19:13,560 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 206 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:19:13,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 122 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:19:14,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187186 states. [2022-01-18 04:19:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187186 to 133125. [2022-01-18 04:19:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133125 states, 133124 states have (on average 4.070716024157928) internal successors, (541910), 133124 states have internal predecessors, (541910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133125 states to 133125 states and 541910 transitions. [2022-01-18 04:19:19,272 INFO L78 Accepts]: Start accepts. Automaton has 133125 states and 541910 transitions. Word has length 25 [2022-01-18 04:19:19,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:19:19,272 INFO L470 AbstractCegarLoop]: Abstraction has 133125 states and 541910 transitions. [2022-01-18 04:19:19,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 133125 states and 541910 transitions. [2022-01-18 04:19:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:19:19,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:19:19,554 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:19:19,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-01-18 04:19:19,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-01-18 04:19:19,755 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:19:19,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:19:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash -977018270, now seen corresponding path program 16 times [2022-01-18 04:19:19,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:19:19,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649044964] [2022-01-18 04:19:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:19:19,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:19:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:19:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:19,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:19:19,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649044964] [2022-01-18 04:19:19,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649044964] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:19:19,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096211209] [2022-01-18 04:19:19,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:19:19,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:19:19,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:19:19,796 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:19:19,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-01-18 04:19:19,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:19:19,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:19:19,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:19:19,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:19:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:19:19,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:19:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:20,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096211209] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:19:20,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:19:20,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-01-18 04:19:20,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749674508] [2022-01-18 04:19:20,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:19:20,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:19:20,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:19:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:19:20,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:19:20,030 INFO L87 Difference]: Start difference. First operand 133125 states and 541910 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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 04:19:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:19:22,064 INFO L93 Difference]: Finished difference Result 134268 states and 544792 transitions. [2022-01-18 04:19:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 04:19:22,064 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:19:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:19:22,720 INFO L225 Difference]: With dead ends: 134268 [2022-01-18 04:19:22,721 INFO L226 Difference]: Without dead ends: 134226 [2022-01-18 04:19:22,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=389, Invalid=1417, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 04:19:22,721 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 179 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:19:22,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 262 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:19:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134226 states. [2022-01-18 04:19:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134226 to 133281. [2022-01-18 04:19:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133281 states, 133280 states have (on average 4.069312725090036) internal successors, (542358), 133280 states have internal predecessors, (542358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:27,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133281 states to 133281 states and 542358 transitions. [2022-01-18 04:19:27,257 INFO L78 Accepts]: Start accepts. Automaton has 133281 states and 542358 transitions. Word has length 25 [2022-01-18 04:19:27,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:19:27,257 INFO L470 AbstractCegarLoop]: Abstraction has 133281 states and 542358 transitions. [2022-01-18 04:19:27,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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 04:19:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 133281 states and 542358 transitions. [2022-01-18 04:19:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:19:28,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:19:28,297 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:19:28,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-01-18 04:19:28,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-01-18 04:19:28,498 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:19:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:19:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2094210674, now seen corresponding path program 17 times [2022-01-18 04:19:28,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:19:28,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301972575] [2022-01-18 04:19:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:19:28,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:19:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:19:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:28,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:19:28,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301972575] [2022-01-18 04:19:28,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301972575] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:19:28,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39575465] [2022-01-18 04:19:28,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:19:28,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:19:28,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:19:28,552 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:19:28,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-01-18 04:19:28,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:19:28,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:19:28,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:19:28,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:19:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:28,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:19:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:28,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39575465] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:19:28,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:19:28,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-01-18 04:19:28,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247387420] [2022-01-18 04:19:28,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:19:28,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 04:19:28,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:19:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 04:19:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:19:28,700 INFO L87 Difference]: Start difference. First operand 133281 states and 542358 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 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 04:19:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:19:30,725 INFO L93 Difference]: Finished difference Result 169487 states and 671433 transitions. [2022-01-18 04:19:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 04:19:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:19:30,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:19:31,606 INFO L225 Difference]: With dead ends: 169487 [2022-01-18 04:19:31,607 INFO L226 Difference]: Without dead ends: 169466 [2022-01-18 04:19:31,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2022-01-18 04:19:31,607 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 184 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:19:31,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 124 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:19:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169466 states. [2022-01-18 04:19:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169466 to 144108. [2022-01-18 04:19:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144108 states, 144107 states have (on average 4.0707391035827545) internal successors, (586622), 144107 states have internal predecessors, (586622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144108 states to 144108 states and 586622 transitions. [2022-01-18 04:19:37,461 INFO L78 Accepts]: Start accepts. Automaton has 144108 states and 586622 transitions. Word has length 25 [2022-01-18 04:19:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:19:37,461 INFO L470 AbstractCegarLoop]: Abstraction has 144108 states and 586622 transitions. [2022-01-18 04:19:37,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 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 04:19:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 144108 states and 586622 transitions. [2022-01-18 04:19:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:19:37,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:19:37,843 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:19:37,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-01-18 04:19:38,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-01-18 04:19:38,044 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:19:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:19:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1650324834, now seen corresponding path program 18 times [2022-01-18 04:19:38,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:19:38,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614527289] [2022-01-18 04:19:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:19:38,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:19:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:19:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:38,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:19:38,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614527289] [2022-01-18 04:19:38,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614527289] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:19:38,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106605651] [2022-01-18 04:19:38,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:19:38,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:19:38,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:19:38,079 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:19:38,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-01-18 04:19:38,100 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:19:38,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:19:38,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 04:19:38,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:19:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:19:38,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:19:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:19:38,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106605651] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:19:38,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:19:38,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-01-18 04:19:38,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513656404] [2022-01-18 04:19:38,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:19:38,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 04:19:38,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:19:38,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 04:19:38,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 04:19:38,312 INFO L87 Difference]: Start difference. First operand 144108 states and 586622 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 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 04:19:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:19:40,559 INFO L93 Difference]: Finished difference Result 146103 states and 591748 transitions. [2022-01-18 04:19:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 04:19:40,559 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 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 25 [2022-01-18 04:19:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:19:41,310 INFO L225 Difference]: With dead ends: 146103 [2022-01-18 04:19:41,310 INFO L226 Difference]: Without dead ends: 146061 [2022-01-18 04:19:41,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=471, Invalid=1509, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 04:19:41,311 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 249 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:19:41,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 215 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:19:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146061 states. [2022-01-18 04:19:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146061 to 144492. [2022-01-18 04:19:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144492 states, 144491 states have (on average 4.06804576063561) internal successors, (587796), 144491 states have internal predecessors, (587796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144492 states to 144492 states and 587796 transitions. [2022-01-18 04:19:46,310 INFO L78 Accepts]: Start accepts. Automaton has 144492 states and 587796 transitions. Word has length 25 [2022-01-18 04:19:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:19:46,310 INFO L470 AbstractCegarLoop]: Abstraction has 144492 states and 587796 transitions. [2022-01-18 04:19:46,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 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 04:19:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 144492 states and 587796 transitions. [2022-01-18 04:19:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:19:47,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:19:47,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:19:47,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2022-01-18 04:19:47,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-01-18 04:19:47,567 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 04:19:47,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:19:47,568 INFO L85 PathProgramCache]: Analyzing trace with hash -994281930, now seen corresponding path program 19 times [2022-01-18 04:19:47,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:19:47,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728998451] [2022-01-18 04:19:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:19:47,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:19:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:19:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:19:47,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:19:47,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728998451] [2022-01-18 04:19:47,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728998451] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:19:47,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030150921] [2022-01-18 04:19:47,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:19:47,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:19:47,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:19:47,621 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:19:47,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-01-18 04:19:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:19:47,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:19:47,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:19:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:19:47,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:19:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:19:47,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030150921] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:19:47,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:19:47,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-01-18 04:19:47,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823581540] [2022-01-18 04:19:47,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:19:47,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 04:19:47,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:19:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 04:19:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:19:47,809 INFO L87 Difference]: Start difference. First operand 144492 states and 587796 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 04:19:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:19:49,804 INFO L93 Difference]: Finished difference Result 166475 states and 659275 transitions. [2022-01-18 04:19:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 04:19:49,804 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:19:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:19:50,654 INFO L225 Difference]: With dead ends: 166475 [2022-01-18 04:19:50,654 INFO L226 Difference]: Without dead ends: 166454 [2022-01-18 04:19:50,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:19:50,654 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 206 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:19:50,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 121 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:19:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166454 states. [2022-01-18 04:19:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166454 to 143078. [2022-01-18 04:19:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143078 states, 143077 states have (on average 4.063734911970477) internal successors, (581427), 143077 states have internal predecessors, (581427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:19:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143078 states to 143078 states and 581427 transitions. [2022-01-18 04:19:55,557 INFO L78 Accepts]: Start accepts. Automaton has 143078 states and 581427 transitions. Word has length 25 [2022-01-18 04:19:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:19:55,557 INFO L470 AbstractCegarLoop]: Abstraction has 143078 states and 581427 transitions. [2022-01-18 04:19:55,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 04:19:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 143078 states and 581427 transitions.