/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/parallel/misc-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 05:24:17,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 05:24:17,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 05:24:17,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 05:24:17,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 05:24:17,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 05:24:17,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 05:24:17,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 05:24:17,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 05:24:17,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 05:24:17,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 05:24:17,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-01-18 05:24:17,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 05:24:17,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 05:24:17,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 05:24:17,969 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 05:24:17,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 05:24:17,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 05:24:17,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 05:24:17,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 05:24:17,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 05:24:17,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 05:24:17,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 05:24:17,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 05:24:17,997 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 05:24:17,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 05:24:17,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 05:24:17,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 05:24:17,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 05:24:17,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 05:24:17,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 05:24:17,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 05:24:17,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 05:24:17,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 05:24:17,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 05:24:17,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 05:24:17,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 05:24:17,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 05:24:17,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 05:24:17,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 05:24:18,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 05:24:18,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 05:24:18,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 05:24:18,181 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 05:24:18,182 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 05:24:18,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2.wvr.bpl [2022-01-18 05:24:18,183 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2.wvr.bpl' [2022-01-18 05:24:18,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 05:24:18,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 05:24:18,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 05:24:18,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 05:24:18,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 05:24:18,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,229 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 05:24:18,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 05:24:18,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 05:24:18,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 05:24:18,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 05:24:18,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 05:24:18,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 05:24:18,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 05:24:18,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 05:24:18,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/1) ... [2022-01-18 05:24:18,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 05:24:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:18,295 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 05:24:18,313 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 05:24:18,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 05:24:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 05:24:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 05:24:18,329 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 05:24:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 05:24:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 05:24:18,329 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 05:24:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 05:24:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 05:24:18,330 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 05:24:18,364 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 05:24:18,365 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 05:24:18,426 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 05:24:18,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 05:24:18,431 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 05:24:18,432 INFO L202 PluginConnector]: Adding new model misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:24:18 BoogieIcfgContainer [2022-01-18 05:24:18,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 05:24:18,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 05:24:18,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 05:24:18,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 05:24:18,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:18" (1/2) ... [2022-01-18 05:24:18,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2642eccd and model type misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 05:24:18, skipping insertion in model container [2022-01-18 05:24:18,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:24:18" (2/2) ... [2022-01-18 05:24:18,438 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2.wvr.bpl [2022-01-18 05:24:18,441 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 05:24:18,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 05:24:18,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 05:24:18,441 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 05:24:18,480 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 05:24:18,513 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 05:24:18,518 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 05:24:18,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 05:24:18,525 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 29 transitions, 74 flow [2022-01-18 05:24:18,550 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 85 states, 84 states have (on average 2.1785714285714284) internal successors, (183), 84 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 84 states have (on average 2.1785714285714284) internal successors, (183), 84 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:18,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-18 05:24:18,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:18,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:18,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -830155331, now seen corresponding path program 1 times [2022-01-18 05:24:18,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:18,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622622252] [2022-01-18 05:24:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:18,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:18,646 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 05:24:18,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:18,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622622252] [2022-01-18 05:24:18,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622622252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:18,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:18,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 05:24:18,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377013315] [2022-01-18 05:24:18,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:18,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 05:24:18,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 05:24:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:18,672 INFO L87 Difference]: Start difference. First operand has 85 states, 84 states have (on average 2.1785714285714284) internal successors, (183), 84 states have internal predecessors, (183), 0 states have call successors, (0), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:18,699 INFO L93 Difference]: Finished difference Result 134 states and 294 transitions. [2022-01-18 05:24:18,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 05:24:18,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-18 05:24:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:18,708 INFO L225 Difference]: With dead ends: 134 [2022-01-18 05:24:18,708 INFO L226 Difference]: Without dead ends: 127 [2022-01-18 05:24:18,709 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 05:24:18,712 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:18,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-18 05:24:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 94. [2022-01-18 05:24:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.161290322580645) internal successors, (201), 93 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 201 transitions. [2022-01-18 05:24:18,776 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 201 transitions. Word has length 11 [2022-01-18 05:24:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:18,781 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 201 transitions. [2022-01-18 05:24:18,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 201 transitions. [2022-01-18 05:24:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:24:18,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:18,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:18,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 05:24:18,783 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1624855747, now seen corresponding path program 1 times [2022-01-18 05:24:18,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:18,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493502984] [2022-01-18 05:24:18,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:18,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:18,836 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 05:24:18,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:18,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493502984] [2022-01-18 05:24:18,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493502984] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:18,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86286204] [2022-01-18 05:24:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:18,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:18,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:18,838 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 05:24:18,839 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 05:24:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:18,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 05:24:18,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:18,972 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 05:24:18,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:19,036 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 05:24:19,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86286204] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:19,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:19,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-01-18 05:24:19,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858760000] [2022-01-18 05:24:19,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:19,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:24:19,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:24:19,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:19,039 INFO L87 Difference]: Start difference. First operand 94 states and 201 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:19,087 INFO L93 Difference]: Finished difference Result 169 states and 356 transitions. [2022-01-18 05:24:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:24:19,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 05:24:19,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:19,091 INFO L225 Difference]: With dead ends: 169 [2022-01-18 05:24:19,091 INFO L226 Difference]: Without dead ends: 169 [2022-01-18 05:24:19,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:19,092 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:19,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 49 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-18 05:24:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 98. [2022-01-18 05:24:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.185567010309278) internal successors, (212), 97 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 212 transitions. [2022-01-18 05:24:19,113 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 212 transitions. Word has length 16 [2022-01-18 05:24:19,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:19,113 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 212 transitions. [2022-01-18 05:24:19,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 212 transitions. [2022-01-18 05:24:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:24:19,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:19,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:19,134 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 05:24:19,326 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 05:24:19,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1687027948, now seen corresponding path program 1 times [2022-01-18 05:24:19,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:19,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182422551] [2022-01-18 05:24:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:19,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:19,386 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 05:24:19,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:19,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182422551] [2022-01-18 05:24:19,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182422551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:19,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:19,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 05:24:19,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106670165] [2022-01-18 05:24:19,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:19,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:24:19,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:19,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:24:19,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:19,388 INFO L87 Difference]: Start difference. First operand 98 states and 212 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:19,441 INFO L93 Difference]: Finished difference Result 188 states and 400 transitions. [2022-01-18 05:24:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:24:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 05:24:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:19,443 INFO L225 Difference]: With dead ends: 188 [2022-01-18 05:24:19,443 INFO L226 Difference]: Without dead ends: 183 [2022-01-18 05:24:19,443 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 05:24:19,444 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 48 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:19,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 56 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:19,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-18 05:24:19,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 122. [2022-01-18 05:24:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.1735537190082646) internal successors, (263), 121 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 263 transitions. [2022-01-18 05:24:19,455 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 263 transitions. Word has length 16 [2022-01-18 05:24:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:19,460 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 263 transitions. [2022-01-18 05:24:19,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 263 transitions. [2022-01-18 05:24:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:24:19,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:19,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:19,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 05:24:19,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1046891778, now seen corresponding path program 2 times [2022-01-18 05:24:19,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:19,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552910415] [2022-01-18 05:24:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:19,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:19,506 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 05:24:19,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:19,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552910415] [2022-01-18 05:24:19,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552910415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:19,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:19,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 05:24:19,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396522088] [2022-01-18 05:24:19,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:19,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:24:19,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:24:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:19,510 INFO L87 Difference]: Start difference. First operand 122 states and 263 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:19,542 INFO L93 Difference]: Finished difference Result 156 states and 342 transitions. [2022-01-18 05:24:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:24:19,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 05:24:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:19,545 INFO L225 Difference]: With dead ends: 156 [2022-01-18 05:24:19,545 INFO L226 Difference]: Without dead ends: 156 [2022-01-18 05:24:19,548 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 05:24:19,551 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:19,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 47 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-18 05:24:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 104. [2022-01-18 05:24:19,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.174757281553398) internal successors, (224), 103 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 224 transitions. [2022-01-18 05:24:19,565 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 224 transitions. Word has length 16 [2022-01-18 05:24:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:19,565 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 224 transitions. [2022-01-18 05:24:19,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 224 transitions. [2022-01-18 05:24:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 05:24:19,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:19,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:19,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 05:24:19,566 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash 283704697, now seen corresponding path program 2 times [2022-01-18 05:24:19,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:19,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482199260] [2022-01-18 05:24:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:19,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:19,603 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 05:24:19,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:19,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482199260] [2022-01-18 05:24:19,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482199260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:19,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:19,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 05:24:19,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596214094] [2022-01-18 05:24:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:19,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:24:19,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:24:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:19,606 INFO L87 Difference]: Start difference. First operand 104 states and 224 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:19,633 INFO L93 Difference]: Finished difference Result 156 states and 340 transitions. [2022-01-18 05:24:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:24:19,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 05:24:19,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:19,634 INFO L225 Difference]: With dead ends: 156 [2022-01-18 05:24:19,634 INFO L226 Difference]: Without dead ends: 154 [2022-01-18 05:24:19,634 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 05:24:19,635 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:19,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 51 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-18 05:24:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 104. [2022-01-18 05:24:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 223 transitions. [2022-01-18 05:24:19,640 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 223 transitions. Word has length 16 [2022-01-18 05:24:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:19,640 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 223 transitions. [2022-01-18 05:24:19,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:19,640 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 223 transitions. [2022-01-18 05:24:19,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 05:24:19,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:19,641 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 05:24:19,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 05:24:19,641 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1511627156, now seen corresponding path program 1 times [2022-01-18 05:24:19,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:19,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674776225] [2022-01-18 05:24:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:19,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:19,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:19,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674776225] [2022-01-18 05:24:19,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674776225] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:19,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253718240] [2022-01-18 05:24:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:19,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:19,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:19,743 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 05:24:19,744 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 05:24:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:19,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:24:19,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:19,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:19,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253718240] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:19,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:19,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-01-18 05:24:19,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991703113] [2022-01-18 05:24:19,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:19,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:24:19,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:19,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:24:19,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:24:19,935 INFO L87 Difference]: Start difference. First operand 104 states and 223 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 05:24:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:20,053 INFO L93 Difference]: Finished difference Result 226 states and 505 transitions. [2022-01-18 05:24:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:24:20,053 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 05:24:20,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:20,054 INFO L225 Difference]: With dead ends: 226 [2022-01-18 05:24:20,054 INFO L226 Difference]: Without dead ends: 226 [2022-01-18 05:24:20,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:24:20,055 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 137 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:20,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 135 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-01-18 05:24:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 164. [2022-01-18 05:24:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.2024539877300615) internal successors, (359), 163 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 359 transitions. [2022-01-18 05:24:20,061 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 359 transitions. Word has length 21 [2022-01-18 05:24:20,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:20,062 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 359 transitions. [2022-01-18 05:24:20,062 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 05:24:20,062 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 359 transitions. [2022-01-18 05:24:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 05:24:20,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:20,063 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:20,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:20,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 05:24:20,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1098323698, now seen corresponding path program 2 times [2022-01-18 05:24:20,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:20,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431872138] [2022-01-18 05:24:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:20,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:20,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:20,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431872138] [2022-01-18 05:24:20,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431872138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:20,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:20,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:24:20,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015961081] [2022-01-18 05:24:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:20,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:24:20,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:20,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:24:20,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:20,294 INFO L87 Difference]: Start difference. First operand 164 states and 359 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:20,309 INFO L93 Difference]: Finished difference Result 266 states and 560 transitions. [2022-01-18 05:24:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:24:20,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 05:24:20,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:20,310 INFO L225 Difference]: With dead ends: 266 [2022-01-18 05:24:20,310 INFO L226 Difference]: Without dead ends: 266 [2022-01-18 05:24:20,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:20,311 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 34 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:20,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 99 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-01-18 05:24:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 234. [2022-01-18 05:24:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.171673819742489) internal successors, (506), 233 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 506 transitions. [2022-01-18 05:24:20,318 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 506 transitions. Word has length 26 [2022-01-18 05:24:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:20,318 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 506 transitions. [2022-01-18 05:24:20,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 506 transitions. [2022-01-18 05:24:20,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 05:24:20,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:20,319 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:20,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 05:24:20,320 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:20,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1941099218, now seen corresponding path program 1 times [2022-01-18 05:24:20,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:20,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380127492] [2022-01-18 05:24:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:20,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:20,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380127492] [2022-01-18 05:24:20,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380127492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082025188] [2022-01-18 05:24:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:20,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:20,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:20,352 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 05:24:20,353 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 05:24:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:20,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 05:24:20,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:20,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:20,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082025188] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:20,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:20,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 05:24:20,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428531467] [2022-01-18 05:24:20,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:20,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:24:20,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:20,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:24:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:20,494 INFO L87 Difference]: Start difference. First operand 234 states and 506 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:20,575 INFO L93 Difference]: Finished difference Result 577 states and 1233 transitions. [2022-01-18 05:24:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 05:24:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 05:24:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:20,578 INFO L225 Difference]: With dead ends: 577 [2022-01-18 05:24:20,578 INFO L226 Difference]: Without dead ends: 577 [2022-01-18 05:24:20,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:24:20,578 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 138 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:20,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 132 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-18 05:24:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 457. [2022-01-18 05:24:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 2.2565789473684212) internal successors, (1029), 456 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1029 transitions. [2022-01-18 05:24:20,590 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1029 transitions. Word has length 26 [2022-01-18 05:24:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:20,590 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 1029 transitions. [2022-01-18 05:24:20,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1029 transitions. [2022-01-18 05:24:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 05:24:20,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:20,591 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:20,611 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 05:24:20,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:20,804 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:20,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:20,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2033158722, now seen corresponding path program 2 times [2022-01-18 05:24:20,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:20,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468164867] [2022-01-18 05:24:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:20,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:20,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468164867] [2022-01-18 05:24:20,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468164867] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686620856] [2022-01-18 05:24:20,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:24:20,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:20,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:20,841 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 05:24:20,841 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 05:24:20,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:24:20,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:20,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 05:24:20,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:20,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:21,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686620856] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:21,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:21,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 7 [2022-01-18 05:24:21,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593838046] [2022-01-18 05:24:21,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:21,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:24:21,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:24:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:21,002 INFO L87 Difference]: Start difference. First operand 457 states and 1029 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:21,054 INFO L93 Difference]: Finished difference Result 791 states and 1738 transitions. [2022-01-18 05:24:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:24:21,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 05:24:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:21,057 INFO L225 Difference]: With dead ends: 791 [2022-01-18 05:24:21,058 INFO L226 Difference]: Without dead ends: 791 [2022-01-18 05:24:21,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:21,058 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 88 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:21,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 116 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-01-18 05:24:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 641. [2022-01-18 05:24:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.3171875) internal successors, (1483), 640 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1483 transitions. [2022-01-18 05:24:21,073 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1483 transitions. Word has length 26 [2022-01-18 05:24:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:21,073 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1483 transitions. [2022-01-18 05:24:21,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1483 transitions. [2022-01-18 05:24:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 05:24:21,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:21,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:21,091 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 05:24:21,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:21,291 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:21,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:21,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1091752574, now seen corresponding path program 3 times [2022-01-18 05:24:21,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:21,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126396084] [2022-01-18 05:24:21,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:21,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:21,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:21,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126396084] [2022-01-18 05:24:21,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126396084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:21,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581931742] [2022-01-18 05:24:21,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:24:21,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:21,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:21,327 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 05:24:21,328 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 05:24:21,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 05:24:21,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:21,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 05:24:21,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:21,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:21,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581931742] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:21,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:21,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 7 [2022-01-18 05:24:21,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414710841] [2022-01-18 05:24:21,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:21,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:24:21,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:21,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:24:21,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:21,456 INFO L87 Difference]: Start difference. First operand 641 states and 1483 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:21,508 INFO L93 Difference]: Finished difference Result 770 states and 1694 transitions. [2022-01-18 05:24:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:24:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 05:24:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:21,511 INFO L225 Difference]: With dead ends: 770 [2022-01-18 05:24:21,511 INFO L226 Difference]: Without dead ends: 766 [2022-01-18 05:24:21,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:21,512 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 109 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:21,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 113 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-18 05:24:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 641. [2022-01-18 05:24:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.3125) internal successors, (1480), 640 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1480 transitions. [2022-01-18 05:24:21,525 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1480 transitions. Word has length 26 [2022-01-18 05:24:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:21,525 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1480 transitions. [2022-01-18 05:24:21,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1480 transitions. [2022-01-18 05:24:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 05:24:21,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:21,527 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:21,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 05:24:21,742 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,SelfDestructingSolverStorable9 [2022-01-18 05:24:21,743 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:21,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:21,743 INFO L85 PathProgramCache]: Analyzing trace with hash 666474856, now seen corresponding path program 4 times [2022-01-18 05:24:21,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:21,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863679419] [2022-01-18 05:24:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:21,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:21,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:21,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863679419] [2022-01-18 05:24:21,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863679419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:21,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685663088] [2022-01-18 05:24:21,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:24:21,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:21,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:21,775 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 05:24:21,776 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 05:24:21,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:24:21,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:21,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 05:24:21,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:21,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:21,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685663088] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:21,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:21,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 05:24:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855104590] [2022-01-18 05:24:21,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:21,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:24:21,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:24:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:21,907 INFO L87 Difference]: Start difference. First operand 641 states and 1480 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:21,972 INFO L93 Difference]: Finished difference Result 776 states and 1698 transitions. [2022-01-18 05:24:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 05:24:21,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 05:24:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:21,975 INFO L225 Difference]: With dead ends: 776 [2022-01-18 05:24:21,975 INFO L226 Difference]: Without dead ends: 742 [2022-01-18 05:24:21,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:24:21,975 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 102 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:21,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 138 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-18 05:24:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 654. [2022-01-18 05:24:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 2.2833078101071975) internal successors, (1491), 653 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1491 transitions. [2022-01-18 05:24:21,988 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1491 transitions. Word has length 26 [2022-01-18 05:24:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:21,988 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 1491 transitions. [2022-01-18 05:24:21,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1491 transitions. [2022-01-18 05:24:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 05:24:21,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:21,990 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:22,005 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 05:24:22,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:22,203 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:22,204 INFO L85 PathProgramCache]: Analyzing trace with hash 139454239, now seen corresponding path program 5 times [2022-01-18 05:24:22,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:22,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394937016] [2022-01-18 05:24:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:22,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 05:24:22,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:22,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394937016] [2022-01-18 05:24:22,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394937016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:22,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:22,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:24:22,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218684378] [2022-01-18 05:24:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:22,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:24:22,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:24:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:22,223 INFO L87 Difference]: Start difference. First operand 654 states and 1491 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:22,238 INFO L93 Difference]: Finished difference Result 1106 states and 2391 transitions. [2022-01-18 05:24:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:24:22,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 05:24:22,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:22,241 INFO L225 Difference]: With dead ends: 1106 [2022-01-18 05:24:22,241 INFO L226 Difference]: Without dead ends: 1106 [2022-01-18 05:24:22,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:22,242 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 33 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:22,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 99 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-01-18 05:24:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1035. [2022-01-18 05:24:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.2030947775628626) internal successors, (2278), 1034 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2278 transitions. [2022-01-18 05:24:22,260 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2278 transitions. Word has length 31 [2022-01-18 05:24:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:22,261 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2278 transitions. [2022-01-18 05:24:22,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2278 transitions. [2022-01-18 05:24:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 05:24:22,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:22,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:22,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 05:24:22,263 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:22,263 INFO L85 PathProgramCache]: Analyzing trace with hash 204098367, now seen corresponding path program 1 times [2022-01-18 05:24:22,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:22,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785900616] [2022-01-18 05:24:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:22,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:22,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:22,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785900616] [2022-01-18 05:24:22,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785900616] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:22,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211185993] [2022-01-18 05:24:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:22,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:22,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:22,313 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 05:24:22,314 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 05:24:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:22,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:22,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:22,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211185993] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:22,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:22,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-01-18 05:24:22,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835757084] [2022-01-18 05:24:22,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:22,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:24:22,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:24:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:22,530 INFO L87 Difference]: Start difference. First operand 1035 states and 2278 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:22,564 INFO L93 Difference]: Finished difference Result 1734 states and 3766 transitions. [2022-01-18 05:24:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:24:22,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 05:24:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:22,569 INFO L225 Difference]: With dead ends: 1734 [2022-01-18 05:24:22,569 INFO L226 Difference]: Without dead ends: 1715 [2022-01-18 05:24:22,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:22,570 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 29 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:22,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 140 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:22,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-01-18 05:24:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1574. [2022-01-18 05:24:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 2.2148760330578514) internal successors, (3484), 1573 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 3484 transitions. [2022-01-18 05:24:22,597 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 3484 transitions. Word has length 31 [2022-01-18 05:24:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:22,598 INFO L470 AbstractCegarLoop]: Abstraction has 1574 states and 3484 transitions. [2022-01-18 05:24:22,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:22,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 3484 transitions. [2022-01-18 05:24:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 05:24:22,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:22,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:22,618 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 05:24:22,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:22,811 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 938415871, now seen corresponding path program 2 times [2022-01-18 05:24:22,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:22,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302344550] [2022-01-18 05:24:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:22,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:22,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:22,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302344550] [2022-01-18 05:24:22,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302344550] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:22,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951673492] [2022-01-18 05:24:22,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:24:22,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:22,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:22,855 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 05:24:22,856 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 05:24:22,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:24:22,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:22,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:22,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:22,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:23,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951673492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:23,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:23,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-01-18 05:24:23,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330641656] [2022-01-18 05:24:23,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:23,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:24:23,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:24:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:23,043 INFO L87 Difference]: Start difference. First operand 1574 states and 3484 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:23,079 INFO L93 Difference]: Finished difference Result 2699 states and 5894 transitions. [2022-01-18 05:24:23,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:24:23,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 05:24:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:23,087 INFO L225 Difference]: With dead ends: 2699 [2022-01-18 05:24:23,087 INFO L226 Difference]: Without dead ends: 2680 [2022-01-18 05:24:23,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:23,088 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 30 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:23,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 158 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-18 05:24:23,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2424. [2022-01-18 05:24:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2423 states have (on average 2.23607098638052) internal successors, (5418), 2423 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 5418 transitions. [2022-01-18 05:24:23,127 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 5418 transitions. Word has length 31 [2022-01-18 05:24:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:23,127 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 5418 transitions. [2022-01-18 05:24:23,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 5418 transitions. [2022-01-18 05:24:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 05:24:23,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:23,131 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:23,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-18 05:24:23,348 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,SelfDestructingSolverStorable13 [2022-01-18 05:24:23,348 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash 564205335, now seen corresponding path program 3 times [2022-01-18 05:24:23,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:23,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336275649] [2022-01-18 05:24:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:23,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:23,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336275649] [2022-01-18 05:24:23,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336275649] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314894271] [2022-01-18 05:24:23,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:24:23,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:23,397 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 05:24:23,398 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 05:24:23,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:24:23,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:23,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:23,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:23,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:23,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314894271] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:23,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:23,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-18 05:24:23,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929789470] [2022-01-18 05:24:23,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:23,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:24:23,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:24:23,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:23,601 INFO L87 Difference]: Start difference. First operand 2424 states and 5418 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:23,661 INFO L93 Difference]: Finished difference Result 4273 states and 9405 transitions. [2022-01-18 05:24:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:24:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 05:24:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:23,688 INFO L225 Difference]: With dead ends: 4273 [2022-01-18 05:24:23,688 INFO L226 Difference]: Without dead ends: 4248 [2022-01-18 05:24:23,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:23,688 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 49 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:23,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 243 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2022-01-18 05:24:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 3431. [2022-01-18 05:24:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3430 states have (on average 2.2504373177842565) internal successors, (7719), 3430 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 7719 transitions. [2022-01-18 05:24:23,747 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 7719 transitions. Word has length 31 [2022-01-18 05:24:23,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:23,747 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 7719 transitions. [2022-01-18 05:24:23,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:23,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 7719 transitions. [2022-01-18 05:24:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 05:24:23,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:23,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:23,770 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 05:24:23,967 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,SelfDestructingSolverStorable14 [2022-01-18 05:24:23,967 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1752857303, now seen corresponding path program 4 times [2022-01-18 05:24:23,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:23,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478128041] [2022-01-18 05:24:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:23,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:24,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:24,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478128041] [2022-01-18 05:24:24,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478128041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:24,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714466534] [2022-01-18 05:24:24,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:24:24,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:24,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:24,005 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 05:24:24,008 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 05:24:24,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:24:24,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:24,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:24,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:24,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:24,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714466534] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:24,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:24,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-18 05:24:24,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832959659] [2022-01-18 05:24:24,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:24,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:24:24,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:24:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:24,202 INFO L87 Difference]: Start difference. First operand 3431 states and 7719 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:24,262 INFO L93 Difference]: Finished difference Result 4375 states and 9644 transitions. [2022-01-18 05:24:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:24:24,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 05:24:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:24,276 INFO L225 Difference]: With dead ends: 4375 [2022-01-18 05:24:24,276 INFO L226 Difference]: Without dead ends: 4356 [2022-01-18 05:24:24,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:24,277 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 46 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:24,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 258 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:24,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2022-01-18 05:24:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 3567. [2022-01-18 05:24:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3567 states, 3566 states have (on average 2.2543466068424003) internal successors, (8039), 3566 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 8039 transitions. [2022-01-18 05:24:24,351 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 8039 transitions. Word has length 31 [2022-01-18 05:24:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:24,352 INFO L470 AbstractCegarLoop]: Abstraction has 3567 states and 8039 transitions. [2022-01-18 05:24:24,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 8039 transitions. [2022-01-18 05:24:24,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 05:24:24,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:24,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:24,377 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 05:24:24,567 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,SelfDestructingSolverStorable15 [2022-01-18 05:24:24,567 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1753562787, now seen corresponding path program 5 times [2022-01-18 05:24:24,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:24,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726010027] [2022-01-18 05:24:24,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:24,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:24,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:24,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726010027] [2022-01-18 05:24:24,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726010027] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:24,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124637481] [2022-01-18 05:24:24,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:24:24,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:24,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:24,599 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 05:24:24,600 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 05:24:24,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:24:24,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:24,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:24,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:24,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:24,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124637481] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:24,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:24,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-01-18 05:24:24,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257155592] [2022-01-18 05:24:24,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:24,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:24:24,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:24:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:24,775 INFO L87 Difference]: Start difference. First operand 3567 states and 8039 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:24,813 INFO L93 Difference]: Finished difference Result 4194 states and 9351 transitions. [2022-01-18 05:24:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:24:24,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 05:24:24,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:24,834 INFO L225 Difference]: With dead ends: 4194 [2022-01-18 05:24:24,834 INFO L226 Difference]: Without dead ends: 4175 [2022-01-18 05:24:24,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:24,835 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 29 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:24,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 170 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:24,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2022-01-18 05:24:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 3956. [2022-01-18 05:24:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3955 states have (on average 2.260429835651075) internal successors, (8940), 3955 states have internal predecessors, (8940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 8940 transitions. [2022-01-18 05:24:24,898 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 8940 transitions. Word has length 31 [2022-01-18 05:24:24,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:24,899 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 8940 transitions. [2022-01-18 05:24:24,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 8940 transitions. [2022-01-18 05:24:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 05:24:24,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:24,905 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:24,924 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 05:24:25,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 05:24:25,119 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:25,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1405888233, now seen corresponding path program 6 times [2022-01-18 05:24:25,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:25,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570727417] [2022-01-18 05:24:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:25,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:25,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570727417] [2022-01-18 05:24:25,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570727417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192097926] [2022-01-18 05:24:25,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:24:25,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:25,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:25,156 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 05:24:25,157 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 05:24:25,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 05:24:25,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:25,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:25,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:25,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:25,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192097926] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:25,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:25,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-18 05:24:25,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132509201] [2022-01-18 05:24:25,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:25,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:24:25,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:24:25,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:25,365 INFO L87 Difference]: Start difference. First operand 3956 states and 8940 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:25,426 INFO L93 Difference]: Finished difference Result 5381 states and 11942 transitions. [2022-01-18 05:24:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:24:25,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 05:24:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:25,435 INFO L225 Difference]: With dead ends: 5381 [2022-01-18 05:24:25,435 INFO L226 Difference]: Without dead ends: 5362 [2022-01-18 05:24:25,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:25,435 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 46 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:25,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 258 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2022-01-18 05:24:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 4122. [2022-01-18 05:24:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 2.2630429507401115) internal successors, (9326), 4121 states have internal predecessors, (9326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 9326 transitions. [2022-01-18 05:24:25,505 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 9326 transitions. Word has length 31 [2022-01-18 05:24:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:25,505 INFO L470 AbstractCegarLoop]: Abstraction has 4122 states and 9326 transitions. [2022-01-18 05:24:25,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 9326 transitions. [2022-01-18 05:24:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 05:24:25,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:25,511 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:25,526 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 05:24:25,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 05:24:25,727 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:25,727 INFO L85 PathProgramCache]: Analyzing trace with hash -217236265, now seen corresponding path program 7 times [2022-01-18 05:24:25,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:25,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150708729] [2022-01-18 05:24:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:25,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:25,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:25,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150708729] [2022-01-18 05:24:25,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150708729] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:25,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418787142] [2022-01-18 05:24:25,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:24:25,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:25,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:25,776 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 05:24:25,777 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 05:24:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:25,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:25,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:25,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:25,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418787142] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:26,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:26,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-18 05:24:26,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045166643] [2022-01-18 05:24:26,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:26,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:24:26,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:26,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:24:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:26,001 INFO L87 Difference]: Start difference. First operand 4122 states and 9326 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:26,068 INFO L93 Difference]: Finished difference Result 5455 states and 12068 transitions. [2022-01-18 05:24:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:24:26,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 05:24:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:26,077 INFO L225 Difference]: With dead ends: 5455 [2022-01-18 05:24:26,078 INFO L226 Difference]: Without dead ends: 5436 [2022-01-18 05:24:26,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:26,078 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 49 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:26,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 259 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2022-01-18 05:24:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 2909. [2022-01-18 05:24:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2908 states have (on average 2.2427785419532325) internal successors, (6522), 2908 states have internal predecessors, (6522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 6522 transitions. [2022-01-18 05:24:26,127 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 6522 transitions. Word has length 31 [2022-01-18 05:24:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:26,127 INFO L470 AbstractCegarLoop]: Abstraction has 2909 states and 6522 transitions. [2022-01-18 05:24:26,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 6522 transitions. [2022-01-18 05:24:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:26,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:26,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:26,148 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 05:24:26,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:26,347 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash 580181725, now seen corresponding path program 8 times [2022-01-18 05:24:26,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:26,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747759970] [2022-01-18 05:24:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:26,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:26,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:26,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747759970] [2022-01-18 05:24:26,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747759970] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:26,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675424927] [2022-01-18 05:24:26,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:24:26,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:26,381 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 05:24:26,382 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 05:24:26,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:24:26,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:26,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:26,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:26,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:26,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675424927] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:26,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:26,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:24:26,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950158561] [2022-01-18 05:24:26,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:26,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:24:26,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:24:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:24:26,547 INFO L87 Difference]: Start difference. First operand 2909 states and 6522 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 05:24:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:26,681 INFO L93 Difference]: Finished difference Result 5757 states and 12535 transitions. [2022-01-18 05:24:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 05:24:26,681 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 36 [2022-01-18 05:24:26,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:26,690 INFO L225 Difference]: With dead ends: 5757 [2022-01-18 05:24:26,690 INFO L226 Difference]: Without dead ends: 5757 [2022-01-18 05:24:26,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:24:26,691 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 155 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:26,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 238 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2022-01-18 05:24:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 3879. [2022-01-18 05:24:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 3878 states have (on average 2.2449716348633317) internal successors, (8706), 3878 states have internal predecessors, (8706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 8706 transitions. [2022-01-18 05:24:26,754 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 8706 transitions. Word has length 36 [2022-01-18 05:24:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:26,754 INFO L470 AbstractCegarLoop]: Abstraction has 3879 states and 8706 transitions. [2022-01-18 05:24:26,754 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 05:24:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 8706 transitions. [2022-01-18 05:24:26,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:26,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:26,783 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:26,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-18 05:24:26,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:26,999 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1581012270, now seen corresponding path program 9 times [2022-01-18 05:24:26,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:26,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044442616] [2022-01-18 05:24:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:26,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:27,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:27,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044442616] [2022-01-18 05:24:27,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044442616] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:27,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985834124] [2022-01-18 05:24:27,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:24:27,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:27,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:27,028 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 05:24:27,029 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 05:24:27,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 05:24:27,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:27,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:27,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:27,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:27,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985834124] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:27,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:27,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:24:27,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152720041] [2022-01-18 05:24:27,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:27,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:24:27,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:24:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:24:27,198 INFO L87 Difference]: Start difference. First operand 3879 states and 8706 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 05:24:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:27,314 INFO L93 Difference]: Finished difference Result 7174 states and 15955 transitions. [2022-01-18 05:24:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:24:27,315 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 36 [2022-01-18 05:24:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:27,328 INFO L225 Difference]: With dead ends: 7174 [2022-01-18 05:24:27,328 INFO L226 Difference]: Without dead ends: 7076 [2022-01-18 05:24:27,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:24:27,328 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 238 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:27,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 202 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2022-01-18 05:24:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 6656. [2022-01-18 05:24:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6656 states, 6655 states have (on average 2.2516904583020287) internal successors, (14985), 6655 states have internal predecessors, (14985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 14985 transitions. [2022-01-18 05:24:27,424 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 14985 transitions. Word has length 36 [2022-01-18 05:24:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:27,424 INFO L470 AbstractCegarLoop]: Abstraction has 6656 states and 14985 transitions. [2022-01-18 05:24:27,424 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 05:24:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 14985 transitions. [2022-01-18 05:24:27,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:27,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:27,434 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:27,451 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 05:24:27,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:27,647 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:27,648 INFO L85 PathProgramCache]: Analyzing trace with hash -784153882, now seen corresponding path program 10 times [2022-01-18 05:24:27,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:27,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096485065] [2022-01-18 05:24:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:27,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:27,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:27,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096485065] [2022-01-18 05:24:27,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096485065] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:27,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767598929] [2022-01-18 05:24:27,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:24:27,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:27,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:27,671 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 05:24:27,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:24:27,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:27,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:27,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:27,695 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 05:24:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:27,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:27,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767598929] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:27,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:27,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 9 [2022-01-18 05:24:27,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607291255] [2022-01-18 05:24:27,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:27,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:24:27,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:24:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:27,849 INFO L87 Difference]: Start difference. First operand 6656 states and 14985 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:27,942 INFO L93 Difference]: Finished difference Result 6988 states and 15417 transitions. [2022-01-18 05:24:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 05:24:27,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 36 [2022-01-18 05:24:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:27,955 INFO L225 Difference]: With dead ends: 6988 [2022-01-18 05:24:27,956 INFO L226 Difference]: Without dead ends: 6988 [2022-01-18 05:24:27,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:24:27,956 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 163 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:27,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 138 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6988 states. [2022-01-18 05:24:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6988 to 6596. [2022-01-18 05:24:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6596 states, 6595 states have (on average 2.2351781652767246) internal successors, (14741), 6595 states have internal predecessors, (14741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6596 states to 6596 states and 14741 transitions. [2022-01-18 05:24:28,041 INFO L78 Accepts]: Start accepts. Automaton has 6596 states and 14741 transitions. Word has length 36 [2022-01-18 05:24:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:28,042 INFO L470 AbstractCegarLoop]: Abstraction has 6596 states and 14741 transitions. [2022-01-18 05:24:28,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6596 states and 14741 transitions. [2022-01-18 05:24:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:28,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:28,048 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:28,066 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 05:24:28,263 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,SelfDestructingSolverStorable21 [2022-01-18 05:24:28,264 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1547340963, now seen corresponding path program 11 times [2022-01-18 05:24:28,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:28,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620216241] [2022-01-18 05:24:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:28,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:28,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:28,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620216241] [2022-01-18 05:24:28,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620216241] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:28,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764829342] [2022-01-18 05:24:28,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:24:28,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:28,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:28,324 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 05:24:28,325 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 05:24:28,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 05:24:28,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:28,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:28,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:28,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:28,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764829342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:28,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:28,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 9 [2022-01-18 05:24:28,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177720411] [2022-01-18 05:24:28,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:28,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:24:28,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:28,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:24:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:28,490 INFO L87 Difference]: Start difference. First operand 6596 states and 14741 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:28,670 INFO L93 Difference]: Finished difference Result 11272 states and 24886 transitions. [2022-01-18 05:24:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 05:24:28,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 36 [2022-01-18 05:24:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:28,691 INFO L225 Difference]: With dead ends: 11272 [2022-01-18 05:24:28,691 INFO L226 Difference]: Without dead ends: 11196 [2022-01-18 05:24:28,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:24:28,691 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 218 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:28,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 335 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11196 states. [2022-01-18 05:24:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11196 to 9644. [2022-01-18 05:24:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9644 states, 9643 states have (on average 2.2686923156693974) internal successors, (21877), 9643 states have internal predecessors, (21877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9644 states to 9644 states and 21877 transitions. [2022-01-18 05:24:28,841 INFO L78 Accepts]: Start accepts. Automaton has 9644 states and 21877 transitions. Word has length 36 [2022-01-18 05:24:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:28,841 INFO L470 AbstractCegarLoop]: Abstraction has 9644 states and 21877 transitions. [2022-01-18 05:24:28,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 9644 states and 21877 transitions. [2022-01-18 05:24:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:28,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:28,848 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:28,867 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 05:24:29,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:29,055 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash -429715939, now seen corresponding path program 12 times [2022-01-18 05:24:29,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:29,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430369134] [2022-01-18 05:24:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:29,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:29,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:29,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430369134] [2022-01-18 05:24:29,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430369134] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:29,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107941127] [2022-01-18 05:24:29,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:24:29,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:29,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:29,086 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 05:24:29,089 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 05:24:29,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 05:24:29,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:29,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:29,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:29,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:29,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107941127] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:29,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:29,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 9 [2022-01-18 05:24:29,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53308258] [2022-01-18 05:24:29,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:29,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:24:29,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:29,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:24:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:29,260 INFO L87 Difference]: Start difference. First operand 9644 states and 21877 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:29,357 INFO L93 Difference]: Finished difference Result 13376 states and 29728 transitions. [2022-01-18 05:24:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 05:24:29,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 36 [2022-01-18 05:24:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:29,381 INFO L225 Difference]: With dead ends: 13376 [2022-01-18 05:24:29,382 INFO L226 Difference]: Without dead ends: 13376 [2022-01-18 05:24:29,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:24:29,383 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 163 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:29,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 135 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2022-01-18 05:24:29,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 10756. [2022-01-18 05:24:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10756 states, 10755 states have (on average 2.2546722454672246) internal successors, (24249), 10755 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 24249 transitions. [2022-01-18 05:24:29,594 INFO L78 Accepts]: Start accepts. Automaton has 10756 states and 24249 transitions. Word has length 36 [2022-01-18 05:24:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:29,594 INFO L470 AbstractCegarLoop]: Abstraction has 10756 states and 24249 transitions. [2022-01-18 05:24:29,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 10756 states and 24249 transitions. [2022-01-18 05:24:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:29,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:29,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:29,619 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 05:24:29,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:29,807 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash 565238930, now seen corresponding path program 13 times [2022-01-18 05:24:29,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:29,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241760367] [2022-01-18 05:24:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:29,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:29,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241760367] [2022-01-18 05:24:29,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241760367] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878626657] [2022-01-18 05:24:29,829 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:24:29,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:29,830 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 05:24:29,838 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 05:24:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:29,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:29,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:29,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:29,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878626657] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:29,988 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:29,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 9 [2022-01-18 05:24:29,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065076197] [2022-01-18 05:24:29,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:29,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:24:29,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:24:29,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:29,989 INFO L87 Difference]: Start difference. First operand 10756 states and 24249 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:30,111 INFO L93 Difference]: Finished difference Result 13267 states and 29560 transitions. [2022-01-18 05:24:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 05:24:30,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 36 [2022-01-18 05:24:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:30,131 INFO L225 Difference]: With dead ends: 13267 [2022-01-18 05:24:30,131 INFO L226 Difference]: Without dead ends: 13255 [2022-01-18 05:24:30,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:24:30,132 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 188 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:30,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 203 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:30,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13255 states. [2022-01-18 05:24:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13255 to 12816. [2022-01-18 05:24:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12816 states, 12815 states have (on average 2.247132266874756) internal successors, (28797), 12815 states have internal predecessors, (28797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12816 states to 12816 states and 28797 transitions. [2022-01-18 05:24:30,339 INFO L78 Accepts]: Start accepts. Automaton has 12816 states and 28797 transitions. Word has length 36 [2022-01-18 05:24:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:30,339 INFO L470 AbstractCegarLoop]: Abstraction has 12816 states and 28797 transitions. [2022-01-18 05:24:30,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12816 states and 28797 transitions. [2022-01-18 05:24:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:30,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:30,391 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:30,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:30,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:30,592 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:30,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:30,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1839626470, now seen corresponding path program 14 times [2022-01-18 05:24:30,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:30,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689446558] [2022-01-18 05:24:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:30,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:30,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:30,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689446558] [2022-01-18 05:24:30,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689446558] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:30,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245706048] [2022-01-18 05:24:30,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:24:30,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:30,615 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 05:24:30,618 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 05:24:30,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:24:30,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:30,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:30,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:30,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245706048] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:30,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:30,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 9 [2022-01-18 05:24:30,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85975512] [2022-01-18 05:24:30,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:30,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:24:30,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:24:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:30,788 INFO L87 Difference]: Start difference. First operand 12816 states and 28797 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:30,943 INFO L93 Difference]: Finished difference Result 13555 states and 30066 transitions. [2022-01-18 05:24:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 05:24:30,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 36 [2022-01-18 05:24:30,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:30,964 INFO L225 Difference]: With dead ends: 13555 [2022-01-18 05:24:30,964 INFO L226 Difference]: Without dead ends: 13553 [2022-01-18 05:24:30,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:24:30,965 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 209 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:30,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 171 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13553 states. [2022-01-18 05:24:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13553 to 12936. [2022-01-18 05:24:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 12935 states have (on average 2.238345574023966) internal successors, (28953), 12935 states have internal predecessors, (28953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 28953 transitions. [2022-01-18 05:24:31,157 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 28953 transitions. Word has length 36 [2022-01-18 05:24:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:31,157 INFO L470 AbstractCegarLoop]: Abstraction has 12936 states and 28953 transitions. [2022-01-18 05:24:31,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 28953 transitions. [2022-01-18 05:24:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:31,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:31,166 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:31,194 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 05:24:31,382 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,SelfDestructingSolverStorable25 [2022-01-18 05:24:31,382 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1076439389, now seen corresponding path program 15 times [2022-01-18 05:24:31,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:31,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736621501] [2022-01-18 05:24:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:31,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:31,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:31,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736621501] [2022-01-18 05:24:31,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736621501] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:31,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366157459] [2022-01-18 05:24:31,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:24:31,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:31,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:31,404 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 05:24:31,406 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 05:24:31,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 05:24:31,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:31,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:31,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 05:24:31,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 05:24:31,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366157459] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:31,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:31,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 14 [2022-01-18 05:24:31,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153000329] [2022-01-18 05:24:31,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:31,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:24:31,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:31,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:24:31,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:24:31,580 INFO L87 Difference]: Start difference. First operand 12936 states and 28953 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:32,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:32,197 INFO L93 Difference]: Finished difference Result 19743 states and 41291 transitions. [2022-01-18 05:24:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 05:24:32,198 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 05:24:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:32,225 INFO L225 Difference]: With dead ends: 19743 [2022-01-18 05:24:32,226 INFO L226 Difference]: Without dead ends: 19411 [2022-01-18 05:24:32,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=429, Invalid=2327, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 05:24:32,227 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 1077 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:32,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 658 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:24:32,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19411 states. [2022-01-18 05:24:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19411 to 10350. [2022-01-18 05:24:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10350 states, 10349 states have (on average 2.101362450478307) internal successors, (21747), 10349 states have internal predecessors, (21747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10350 states to 10350 states and 21747 transitions. [2022-01-18 05:24:32,389 INFO L78 Accepts]: Start accepts. Automaton has 10350 states and 21747 transitions. Word has length 36 [2022-01-18 05:24:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:32,389 INFO L470 AbstractCegarLoop]: Abstraction has 10350 states and 21747 transitions. [2022-01-18 05:24:32,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 10350 states and 21747 transitions. [2022-01-18 05:24:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:32,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:32,395 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:32,411 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 05:24:32,599 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,SelfDestructingSolverStorable26 [2022-01-18 05:24:32,599 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1260168476, now seen corresponding path program 16 times [2022-01-18 05:24:32,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:32,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283742654] [2022-01-18 05:24:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:32,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:32,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:32,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283742654] [2022-01-18 05:24:32,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283742654] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:32,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076947041] [2022-01-18 05:24:32,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:24:32,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:32,625 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 05:24:32,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:24:32,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:32,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:32,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:32,645 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 05:24:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:32,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:32,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076947041] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:32,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:32,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2022-01-18 05:24:32,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994524695] [2022-01-18 05:24:32,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:32,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:24:32,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:24:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:24:32,792 INFO L87 Difference]: Start difference. First operand 10350 states and 21747 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:32,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:32,948 INFO L93 Difference]: Finished difference Result 10759 states and 22444 transitions. [2022-01-18 05:24:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 05:24:32,949 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 05:24:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:32,961 INFO L225 Difference]: With dead ends: 10759 [2022-01-18 05:24:32,961 INFO L226 Difference]: Without dead ends: 10757 [2022-01-18 05:24:32,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:24:32,962 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 227 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:32,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 198 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:32,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2022-01-18 05:24:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 10354. [2022-01-18 05:24:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10354 states, 10353 states have (on average 2.0980392156862746) internal successors, (21721), 10353 states have internal predecessors, (21721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10354 states to 10354 states and 21721 transitions. [2022-01-18 05:24:33,134 INFO L78 Accepts]: Start accepts. Automaton has 10354 states and 21721 transitions. Word has length 36 [2022-01-18 05:24:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:33,134 INFO L470 AbstractCegarLoop]: Abstraction has 10354 states and 21721 transitions. [2022-01-18 05:24:33,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 10354 states and 21721 transitions. [2022-01-18 05:24:33,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:33,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:33,140 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:33,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 05:24:33,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 05:24:33,340 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1086431742, now seen corresponding path program 17 times [2022-01-18 05:24:33,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:33,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849159207] [2022-01-18 05:24:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:33,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:33,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:33,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849159207] [2022-01-18 05:24:33,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849159207] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:33,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568444413] [2022-01-18 05:24:33,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:24:33,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:33,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:33,376 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 05:24:33,376 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 05:24:33,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:24:33,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:33,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:33,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:33,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:33,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568444413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:33,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:33,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2022-01-18 05:24:33,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638733238] [2022-01-18 05:24:33,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:33,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:24:33,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:24:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:24:33,555 INFO L87 Difference]: Start difference. First operand 10354 states and 21721 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 05:24:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:33,678 INFO L93 Difference]: Finished difference Result 11847 states and 24779 transitions. [2022-01-18 05:24:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:24:33,678 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 36 [2022-01-18 05:24:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:33,694 INFO L225 Difference]: With dead ends: 11847 [2022-01-18 05:24:33,694 INFO L226 Difference]: Without dead ends: 11787 [2022-01-18 05:24:33,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:24:33,695 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 182 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:33,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 187 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11787 states. [2022-01-18 05:24:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11787 to 11572. [2022-01-18 05:24:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11572 states, 11571 states have (on average 2.0975715149943825) internal successors, (24271), 11571 states have internal predecessors, (24271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11572 states to 11572 states and 24271 transitions. [2022-01-18 05:24:33,842 INFO L78 Accepts]: Start accepts. Automaton has 11572 states and 24271 transitions. Word has length 36 [2022-01-18 05:24:33,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:33,842 INFO L470 AbstractCegarLoop]: Abstraction has 11572 states and 24271 transitions. [2022-01-18 05:24:33,842 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 05:24:33,842 INFO L276 IsEmpty]: Start isEmpty. Operand 11572 states and 24271 transitions. [2022-01-18 05:24:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:33,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:33,848 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:33,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 05:24:34,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:34,048 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:34,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1497212014, now seen corresponding path program 18 times [2022-01-18 05:24:34,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:34,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289041288] [2022-01-18 05:24:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:34,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:34,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289041288] [2022-01-18 05:24:34,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289041288] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266745008] [2022-01-18 05:24:34,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:24:34,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:34,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:34,077 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 05:24:34,078 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 05:24:34,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 05:24:34,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:34,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:34,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:34,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:34,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266745008] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:34,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:34,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 9 [2022-01-18 05:24:34,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419665438] [2022-01-18 05:24:34,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:34,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:24:34,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:24:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:34,214 INFO L87 Difference]: Start difference. First operand 11572 states and 24271 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:34,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:34,340 INFO L93 Difference]: Finished difference Result 14133 states and 29435 transitions. [2022-01-18 05:24:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 05:24:34,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 36 [2022-01-18 05:24:34,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:34,358 INFO L225 Difference]: With dead ends: 14133 [2022-01-18 05:24:34,358 INFO L226 Difference]: Without dead ends: 14127 [2022-01-18 05:24:34,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:24:34,359 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 143 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:34,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 260 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14127 states. [2022-01-18 05:24:34,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14127 to 13872. [2022-01-18 05:24:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13872 states, 13871 states have (on average 2.0935044337106192) internal successors, (29039), 13871 states have internal predecessors, (29039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13872 states to 13872 states and 29039 transitions. [2022-01-18 05:24:34,549 INFO L78 Accepts]: Start accepts. Automaton has 13872 states and 29039 transitions. Word has length 36 [2022-01-18 05:24:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:34,549 INFO L470 AbstractCegarLoop]: Abstraction has 13872 states and 29039 transitions. [2022-01-18 05:24:34,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 13872 states and 29039 transitions. [2022-01-18 05:24:34,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:34,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:34,556 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:34,571 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 05:24:34,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:34,771 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:34,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash -222824474, now seen corresponding path program 19 times [2022-01-18 05:24:34,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:34,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746518943] [2022-01-18 05:24:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:34,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:34,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:34,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746518943] [2022-01-18 05:24:34,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746518943] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:34,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000762589] [2022-01-18 05:24:34,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:24:34,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:34,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:34,798 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 05:24:34,798 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 05:24:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:34,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:34,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:34,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:34,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000762589] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:34,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:34,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 9 [2022-01-18 05:24:34,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385504677] [2022-01-18 05:24:34,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:34,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 05:24:34,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:34,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 05:24:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:24:34,963 INFO L87 Difference]: Start difference. First operand 13872 states and 29039 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:35,121 INFO L93 Difference]: Finished difference Result 14496 states and 30134 transitions. [2022-01-18 05:24:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 05:24:35,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 36 [2022-01-18 05:24:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:35,143 INFO L225 Difference]: With dead ends: 14496 [2022-01-18 05:24:35,143 INFO L226 Difference]: Without dead ends: 14496 [2022-01-18 05:24:35,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:24:35,144 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 178 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:35,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 191 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14496 states. [2022-01-18 05:24:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14496 to 13888. [2022-01-18 05:24:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13888 states, 13887 states have (on average 2.093396701951465) internal successors, (29071), 13887 states have internal predecessors, (29071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13888 states to 13888 states and 29071 transitions. [2022-01-18 05:24:35,314 INFO L78 Accepts]: Start accepts. Automaton has 13888 states and 29071 transitions. Word has length 36 [2022-01-18 05:24:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:35,314 INFO L470 AbstractCegarLoop]: Abstraction has 13888 states and 29071 transitions. [2022-01-18 05:24:35,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 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 05:24:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 13888 states and 29071 transitions. [2022-01-18 05:24:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:35,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:35,320 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:35,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 05:24:35,523 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,SelfDestructingSolverStorable30 [2022-01-18 05:24:35,523 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash -802282468, now seen corresponding path program 20 times [2022-01-18 05:24:35,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:35,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806793820] [2022-01-18 05:24:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:35,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:35,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:35,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806793820] [2022-01-18 05:24:35,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806793820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:35,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514203027] [2022-01-18 05:24:35,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:24:35,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:35,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:35,551 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 05:24:35,552 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 05:24:35,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:24:35,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:35,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:35,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:35,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:35,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514203027] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:35,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:35,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2022-01-18 05:24:35,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090087700] [2022-01-18 05:24:35,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:35,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:24:35,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:24:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:24:35,768 INFO L87 Difference]: Start difference. First operand 13888 states and 29071 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:35,941 INFO L93 Difference]: Finished difference Result 14890 states and 30930 transitions. [2022-01-18 05:24:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:24:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 05:24:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:35,960 INFO L225 Difference]: With dead ends: 14890 [2022-01-18 05:24:35,960 INFO L226 Difference]: Without dead ends: 14890 [2022-01-18 05:24:35,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=172, Invalid=290, Unknown=0, NotChecked=0, Total=462 [2022-01-18 05:24:35,961 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 205 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:35,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 255 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14890 states. [2022-01-18 05:24:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14890 to 13968. [2022-01-18 05:24:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13968 states, 13967 states have (on average 2.0928617455430656) internal successors, (29231), 13967 states have internal predecessors, (29231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13968 states to 13968 states and 29231 transitions. [2022-01-18 05:24:36,128 INFO L78 Accepts]: Start accepts. Automaton has 13968 states and 29231 transitions. Word has length 36 [2022-01-18 05:24:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:36,128 INFO L470 AbstractCegarLoop]: Abstraction has 13968 states and 29231 transitions. [2022-01-18 05:24:36,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 13968 states and 29231 transitions. [2022-01-18 05:24:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:24:36,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:36,134 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:36,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 05:24:36,335 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,SelfDestructingSolverStorable31 [2022-01-18 05:24:36,335 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 650582462, now seen corresponding path program 21 times [2022-01-18 05:24:36,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:36,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414603266] [2022-01-18 05:24:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:36,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:36,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414603266] [2022-01-18 05:24:36,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414603266] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348431224] [2022-01-18 05:24:36,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:24:36,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:36,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:36,366 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 05:24:36,367 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 05:24:36,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 05:24:36,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:36,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 05:24:36,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:36,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:36,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348431224] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:36,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:36,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 05:24:36,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099527316] [2022-01-18 05:24:36,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:36,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:24:36,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:24:36,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:24:36,530 INFO L87 Difference]: Start difference. First operand 13968 states and 29231 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 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 05:24:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:36,669 INFO L93 Difference]: Finished difference Result 16178 states and 33735 transitions. [2022-01-18 05:24:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 05:24:36,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 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 36 [2022-01-18 05:24:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:36,693 INFO L225 Difference]: With dead ends: 16178 [2022-01-18 05:24:36,693 INFO L226 Difference]: Without dead ends: 16178 [2022-01-18 05:24:36,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:24:36,694 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 112 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:36,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 226 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16178 states. [2022-01-18 05:24:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16178 to 15632. [2022-01-18 05:24:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15632 states, 15631 states have (on average 2.093084255645832) internal successors, (32717), 15631 states have internal predecessors, (32717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15632 states to 15632 states and 32717 transitions. [2022-01-18 05:24:36,912 INFO L78 Accepts]: Start accepts. Automaton has 15632 states and 32717 transitions. Word has length 36 [2022-01-18 05:24:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:36,912 INFO L470 AbstractCegarLoop]: Abstraction has 15632 states and 32717 transitions. [2022-01-18 05:24:36,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 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 05:24:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 15632 states and 32717 transitions. [2022-01-18 05:24:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:36,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:36,924 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:36,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:37,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:37,126 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:37,126 INFO L85 PathProgramCache]: Analyzing trace with hash -260426766, now seen corresponding path program 22 times [2022-01-18 05:24:37,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:37,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124503204] [2022-01-18 05:24:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:37,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:37,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124503204] [2022-01-18 05:24:37,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124503204] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484122773] [2022-01-18 05:24:37,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:24:37,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:37,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:37,181 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 05:24:37,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:24:37,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:37,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:24:37,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:37,226 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 05:24:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:37,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:37,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484122773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:37,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:37,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 05:24:37,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973463143] [2022-01-18 05:24:37,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:37,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:24:37,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:24:37,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:24:37,378 INFO L87 Difference]: Start difference. First operand 15632 states and 32717 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:37,600 INFO L93 Difference]: Finished difference Result 19172 states and 39874 transitions. [2022-01-18 05:24:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 05:24:37,601 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:37,626 INFO L225 Difference]: With dead ends: 19172 [2022-01-18 05:24:37,626 INFO L226 Difference]: Without dead ends: 19172 [2022-01-18 05:24:37,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=271, Invalid=485, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:24:37,627 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 253 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:37,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 372 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19172 states. [2022-01-18 05:24:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19172 to 16468. [2022-01-18 05:24:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16468 states, 16467 states have (on average 2.092002186190563) internal successors, (34449), 16467 states have internal predecessors, (34449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16468 states to 16468 states and 34449 transitions. [2022-01-18 05:24:37,915 INFO L78 Accepts]: Start accepts. Automaton has 16468 states and 34449 transitions. Word has length 46 [2022-01-18 05:24:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:37,915 INFO L470 AbstractCegarLoop]: Abstraction has 16468 states and 34449 transitions. [2022-01-18 05:24:37,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 16468 states and 34449 transitions. [2022-01-18 05:24:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:37,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:37,929 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:37,943 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 05:24:38,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:38,139 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:38,199 INFO L85 PathProgramCache]: Analyzing trace with hash -461703642, now seen corresponding path program 23 times [2022-01-18 05:24:38,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:38,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013802279] [2022-01-18 05:24:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:38,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 05:24:38,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:38,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013802279] [2022-01-18 05:24:38,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013802279] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:38,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784047646] [2022-01-18 05:24:38,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:24:38,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:38,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:38,231 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 05:24:38,231 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 05:24:38,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 05:24:38,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:38,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:24:38,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 05:24:38,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:38,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784047646] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:38,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:38,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 12 [2022-01-18 05:24:38,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104834574] [2022-01-18 05:24:38,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:38,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:24:38,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:24:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:24:38,460 INFO L87 Difference]: Start difference. First operand 16468 states and 34449 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:38,722 INFO L93 Difference]: Finished difference Result 24035 states and 50007 transitions. [2022-01-18 05:24:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 05:24:38,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:38,753 INFO L225 Difference]: With dead ends: 24035 [2022-01-18 05:24:38,753 INFO L226 Difference]: Without dead ends: 24035 [2022-01-18 05:24:38,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=192, Invalid=314, Unknown=0, NotChecked=0, Total=506 [2022-01-18 05:24:38,753 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 272 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:38,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 337 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:38,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24035 states. [2022-01-18 05:24:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24035 to 22092. [2022-01-18 05:24:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22092 states, 22091 states have (on average 2.102077769227287) internal successors, (46437), 22091 states have internal predecessors, (46437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22092 states to 22092 states and 46437 transitions. [2022-01-18 05:24:39,041 INFO L78 Accepts]: Start accepts. Automaton has 22092 states and 46437 transitions. Word has length 46 [2022-01-18 05:24:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:39,041 INFO L470 AbstractCegarLoop]: Abstraction has 22092 states and 46437 transitions. [2022-01-18 05:24:39,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 22092 states and 46437 transitions. [2022-01-18 05:24:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:39,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:39,073 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:39,089 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 05:24:39,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:39,287 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 708352358, now seen corresponding path program 24 times [2022-01-18 05:24:39,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:39,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678137057] [2022-01-18 05:24:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:39,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 05:24:39,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678137057] [2022-01-18 05:24:39,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678137057] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082121964] [2022-01-18 05:24:39,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:24:39,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:39,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:39,313 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 05:24:39,314 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 05:24:39,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 05:24:39,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:39,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:24:39,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 05:24:39,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:39,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082121964] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:39,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:39,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 12 [2022-01-18 05:24:39,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633415598] [2022-01-18 05:24:39,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:39,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:24:39,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:39,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:24:39,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:24:39,561 INFO L87 Difference]: Start difference. First operand 22092 states and 46437 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:39,845 INFO L93 Difference]: Finished difference Result 23037 states and 47959 transitions. [2022-01-18 05:24:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 05:24:39,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:39,881 INFO L225 Difference]: With dead ends: 23037 [2022-01-18 05:24:39,881 INFO L226 Difference]: Without dead ends: 22969 [2022-01-18 05:24:39,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=233, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:24:39,882 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 212 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:39,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 456 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:24:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22969 states. [2022-01-18 05:24:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22969 to 19748. [2022-01-18 05:24:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19748 states, 19747 states have (on average 2.098394692864739) internal successors, (41437), 19747 states have internal predecessors, (41437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19748 states to 19748 states and 41437 transitions. [2022-01-18 05:24:40,205 INFO L78 Accepts]: Start accepts. Automaton has 19748 states and 41437 transitions. Word has length 46 [2022-01-18 05:24:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:40,206 INFO L470 AbstractCegarLoop]: Abstraction has 19748 states and 41437 transitions. [2022-01-18 05:24:40,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 19748 states and 41437 transitions. [2022-01-18 05:24:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:40,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:40,219 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:40,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 05:24:40,420 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,SelfDestructingSolverStorable35 [2022-01-18 05:24:40,420 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:40,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1828387508, now seen corresponding path program 25 times [2022-01-18 05:24:40,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:40,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566586837] [2022-01-18 05:24:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:40,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:40,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:40,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566586837] [2022-01-18 05:24:40,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566586837] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:40,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411205841] [2022-01-18 05:24:40,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:24:40,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:40,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:40,454 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 05:24:40,455 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 05:24:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:40,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:24:40,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:40,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:40,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411205841] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:40,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:40,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 12 [2022-01-18 05:24:40,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793096577] [2022-01-18 05:24:40,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:40,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:24:40,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:24:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:24:40,657 INFO L87 Difference]: Start difference. First operand 19748 states and 41437 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:40,850 INFO L93 Difference]: Finished difference Result 23032 states and 48100 transitions. [2022-01-18 05:24:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 05:24:40,850 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:40,880 INFO L225 Difference]: With dead ends: 23032 [2022-01-18 05:24:40,880 INFO L226 Difference]: Without dead ends: 22964 [2022-01-18 05:24:40,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:24:40,881 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 266 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:40,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 379 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22964 states. [2022-01-18 05:24:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22964 to 22232. [2022-01-18 05:24:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22232 states, 22231 states have (on average 2.098825963744321) internal successors, (46659), 22231 states have internal predecessors, (46659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22232 states to 22232 states and 46659 transitions. [2022-01-18 05:24:41,244 INFO L78 Accepts]: Start accepts. Automaton has 22232 states and 46659 transitions. Word has length 46 [2022-01-18 05:24:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:41,245 INFO L470 AbstractCegarLoop]: Abstraction has 22232 states and 46659 transitions. [2022-01-18 05:24:41,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 22232 states and 46659 transitions. [2022-01-18 05:24:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:41,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:41,259 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:41,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:41,459 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,SelfDestructingSolverStorable36 [2022-01-18 05:24:41,460 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:41,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1267130958, now seen corresponding path program 26 times [2022-01-18 05:24:41,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:41,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451929759] [2022-01-18 05:24:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:41,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 05:24:41,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451929759] [2022-01-18 05:24:41,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451929759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282384729] [2022-01-18 05:24:41,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:24:41,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:41,576 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 05:24:41,577 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 05:24:41,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:24:41,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:41,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:24:41,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 05:24:41,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 05:24:41,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282384729] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:41,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:41,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2022-01-18 05:24:41,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934783053] [2022-01-18 05:24:41,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:41,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:24:41,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:41,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:24:41,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:24:41,769 INFO L87 Difference]: Start difference. First operand 22232 states and 46659 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:41,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:41,959 INFO L93 Difference]: Finished difference Result 26761 states and 55923 transitions. [2022-01-18 05:24:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 05:24:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:41,998 INFO L225 Difference]: With dead ends: 26761 [2022-01-18 05:24:41,998 INFO L226 Difference]: Without dead ends: 26758 [2022-01-18 05:24:41,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:24:41,999 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 206 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:41,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 239 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:42,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26758 states. [2022-01-18 05:24:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26758 to 24312. [2022-01-18 05:24:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24312 states, 24311 states have (on average 2.0999958866356794) internal successors, (51053), 24311 states have internal predecessors, (51053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24312 states to 24312 states and 51053 transitions. [2022-01-18 05:24:42,376 INFO L78 Accepts]: Start accepts. Automaton has 24312 states and 51053 transitions. Word has length 46 [2022-01-18 05:24:42,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:42,376 INFO L470 AbstractCegarLoop]: Abstraction has 24312 states and 51053 transitions. [2022-01-18 05:24:42,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 24312 states and 51053 transitions. [2022-01-18 05:24:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:42,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:42,391 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:42,406 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 05:24:42,592 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,SelfDestructingSolverStorable37 [2022-01-18 05:24:42,592 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1707831838, now seen corresponding path program 27 times [2022-01-18 05:24:42,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:42,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852312532] [2022-01-18 05:24:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:42,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:42,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:42,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852312532] [2022-01-18 05:24:42,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852312532] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:42,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845776654] [2022-01-18 05:24:42,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:24:42,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:42,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:42,628 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 05:24:42,629 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 05:24:42,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 05:24:42,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:42,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:24:42,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:42,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:42,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845776654] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:42,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:42,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 13 [2022-01-18 05:24:42,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818119022] [2022-01-18 05:24:42,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:42,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:24:42,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:24:42,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:24:42,816 INFO L87 Difference]: Start difference. First operand 24312 states and 51053 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:43,042 INFO L93 Difference]: Finished difference Result 27266 states and 57039 transitions. [2022-01-18 05:24:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:24:43,042 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:43,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:43,087 INFO L225 Difference]: With dead ends: 27266 [2022-01-18 05:24:43,088 INFO L226 Difference]: Without dead ends: 27266 [2022-01-18 05:24:43,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:24:43,088 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 174 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:43,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 337 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27266 states. [2022-01-18 05:24:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27266 to 24676. [2022-01-18 05:24:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24676 states, 24675 states have (on average 2.0991691995947317) internal successors, (51797), 24675 states have internal predecessors, (51797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24676 states to 24676 states and 51797 transitions. [2022-01-18 05:24:43,577 INFO L78 Accepts]: Start accepts. Automaton has 24676 states and 51797 transitions. Word has length 46 [2022-01-18 05:24:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:43,577 INFO L470 AbstractCegarLoop]: Abstraction has 24676 states and 51797 transitions. [2022-01-18 05:24:43,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 24676 states and 51797 transitions. [2022-01-18 05:24:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:43,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:43,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:43,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:43,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 05:24:43,793 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:43,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1000006366, now seen corresponding path program 28 times [2022-01-18 05:24:43,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:43,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230272339] [2022-01-18 05:24:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:43,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 05:24:43,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:43,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230272339] [2022-01-18 05:24:43,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230272339] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:43,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285995434] [2022-01-18 05:24:43,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:24:43,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:43,838 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 05:24:43,839 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 05:24:43,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:24:43,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:43,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:24:43,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-18 05:24:43,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:44,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285995434] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:44,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:44,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2022-01-18 05:24:44,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150901566] [2022-01-18 05:24:44,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:44,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 05:24:44,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:44,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 05:24:44,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-01-18 05:24:44,054 INFO L87 Difference]: Start difference. First operand 24676 states and 51797 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:44,249 INFO L93 Difference]: Finished difference Result 32078 states and 67337 transitions. [2022-01-18 05:24:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:24:44,249 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:44,301 INFO L225 Difference]: With dead ends: 32078 [2022-01-18 05:24:44,301 INFO L226 Difference]: Without dead ends: 32002 [2022-01-18 05:24:44,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2022-01-18 05:24:44,302 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 158 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:44,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 247 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32002 states. [2022-01-18 05:24:44,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32002 to 27628. [2022-01-18 05:24:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27628 states, 27627 states have (on average 2.1005176095848266) internal successors, (58031), 27627 states have internal predecessors, (58031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27628 states to 27628 states and 58031 transitions. [2022-01-18 05:24:44,741 INFO L78 Accepts]: Start accepts. Automaton has 27628 states and 58031 transitions. Word has length 46 [2022-01-18 05:24:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:44,742 INFO L470 AbstractCegarLoop]: Abstraction has 27628 states and 58031 transitions. [2022-01-18 05:24:44,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27628 states and 58031 transitions. [2022-01-18 05:24:44,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:44,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:44,760 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:44,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 05:24:44,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 05:24:44,961 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1577635516, now seen corresponding path program 29 times [2022-01-18 05:24:44,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541546597] [2022-01-18 05:24:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:44,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 05:24:44,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:44,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541546597] [2022-01-18 05:24:44,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541546597] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:44,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929602606] [2022-01-18 05:24:44,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:24:44,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:44,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:44,995 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 05:24:44,996 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 05:24:45,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 05:24:45,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:45,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 05:24:45,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 05:24:45,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:45,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929602606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:45,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:45,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 11 [2022-01-18 05:24:45,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881776807] [2022-01-18 05:24:45,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:45,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 05:24:45,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:45,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 05:24:45,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:24:45,243 INFO L87 Difference]: Start difference. First operand 27628 states and 58031 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:45,413 INFO L93 Difference]: Finished difference Result 32069 states and 67248 transitions. [2022-01-18 05:24:45,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 05:24:45,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:45,571 INFO L225 Difference]: With dead ends: 32069 [2022-01-18 05:24:45,571 INFO L226 Difference]: Without dead ends: 32069 [2022-01-18 05:24:45,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:24:45,571 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 166 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:45,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 210 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32069 states. [2022-01-18 05:24:45,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32069 to 27632. [2022-01-18 05:24:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27632 states, 27631 states have (on average 2.0994897035937896) internal successors, (58011), 27631 states have internal predecessors, (58011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27632 states to 27632 states and 58011 transitions. [2022-01-18 05:24:45,971 INFO L78 Accepts]: Start accepts. Automaton has 27632 states and 58011 transitions. Word has length 46 [2022-01-18 05:24:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:45,971 INFO L470 AbstractCegarLoop]: Abstraction has 27632 states and 58011 transitions. [2022-01-18 05:24:45,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 27632 states and 58011 transitions. [2022-01-18 05:24:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-18 05:24:45,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:45,990 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:46,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:46,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:46,190 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 05:24:46,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:46,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1852613086, now seen corresponding path program 30 times [2022-01-18 05:24:46,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:46,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204327911] [2022-01-18 05:24:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:46,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:46,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204327911] [2022-01-18 05:24:46,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204327911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519305953] [2022-01-18 05:24:46,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:24:46,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:46,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:46,232 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 05:24:46,233 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 05:24:46,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 05:24:46,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:46,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:24:46,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-18 05:24:46,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-18 05:24:46,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519305953] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:46,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:46,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 14 [2022-01-18 05:24:46,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650275063] [2022-01-18 05:24:46,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:46,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:24:46,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:24:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:24:46,515 INFO L87 Difference]: Start difference. First operand 27632 states and 58011 transitions. Second operand has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:47,125 INFO L93 Difference]: Finished difference Result 43719 states and 89619 transitions. [2022-01-18 05:24:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 05:24:47,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-18 05:24:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:47,126 INFO L225 Difference]: With dead ends: 43719 [2022-01-18 05:24:47,126 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 05:24:47,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=372, Invalid=1434, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 05:24:47,127 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 340 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:47,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 683 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:24:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 05:24:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 05:24:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 05:24:47,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2022-01-18 05:24:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:47,127 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 05:24:47,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 05:24:47,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 05:24:47,129 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-01-18 05:24:47,129 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 05:24:47,130 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 05:24:47,144 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 05:24:47,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:47,332 INFO L732 BasicCegarLoop]: Path program histogram: [30, 5, 2, 2, 2, 1] [2022-01-18 05:24:47,334 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 05:24:47,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 05:24:47,335 INFO L202 PluginConnector]: Adding new model misc-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 05:24:47 BasicIcfg [2022-01-18 05:24:47,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 05:24:47,335 INFO L158 Benchmark]: Toolchain (without parser) took 29132.00ms. Allocated memory was 346.0MB in the beginning and 4.2GB in the end (delta: 3.8GB). Free memory was 308.2MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 541.6MB. Max. memory is 16.0GB. [2022-01-18 05:24:47,335 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 346.0MB. Free memory is still 309.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 05:24:47,336 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.14ms. Allocated memory is still 346.0MB. Free memory was 308.2MB in the beginning and 306.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 05:24:47,336 INFO L158 Benchmark]: Boogie Preprocessor took 13.44ms. Allocated memory is still 346.0MB. Free memory was 306.6MB in the beginning and 305.8MB in the end (delta: 832.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 05:24:47,336 INFO L158 Benchmark]: RCFGBuilder took 185.66ms. Allocated memory is still 346.0MB. Free memory was 305.6MB in the beginning and 296.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 05:24:47,336 INFO L158 Benchmark]: TraceAbstraction took 28902.13ms. Allocated memory was 346.0MB in the beginning and 4.2GB in the end (delta: 3.8GB). Free memory was 296.4MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 529.0MB. Max. memory is 16.0GB. [2022-01-18 05:24:47,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 346.0MB. Free memory is still 309.3MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.14ms. Allocated memory is still 346.0MB. Free memory was 308.2MB in the beginning and 306.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 13.44ms. Allocated memory is still 346.0MB. Free memory was 306.6MB in the beginning and 305.8MB in the end (delta: 832.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 185.66ms. Allocated memory is still 346.0MB. Free memory was 305.6MB in the beginning and 296.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 28902.13ms. Allocated memory was 346.0MB in the beginning and 4.2GB in the end (delta: 3.8GB). Free memory was 296.4MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 529.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 59]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 44 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 28.8s, OverallIterations: 42, TraceHistogramMax: 4, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.4s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6614 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6614 mSDsluCounter, 9210 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8545 mSDsCounter, 744 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5408 IncrementalHoareTripleChecker+Invalid, 6152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 744 mSolverCounterUnsat, 1889 mSDtfsCounter, 5408 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2979 GetRequests, 2374 SyntacticMatches, 78 SemanticMatches, 527 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27632occurred in iteration=41, InterpolantAutomatonStates: 497, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.7s AutomataMinimizationTime, 42 MinimizatonAttempts, 49279 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 2668 NumberOfCodeBlocks, 2658 NumberOfCodeBlocksAsserted, 135 NumberOfCheckSat, 3830 ConstructedInterpolants, 0 QuantifiedInterpolants, 23808 SizeOfPredicates, 97 NumberOfNonLiveVariables, 2154 ConjunctsInSsa, 318 ConjunctsInUnsatCore, 114 InterpolantComputations, 6 PerfectInterpolantSequences, 1013/2535 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 05:24:47,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...